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1
Andersson, Sam, and Carl Svantesson. "Styrning av servomotor med LabVIEW och DAQ-kort." Thesis, KTH, Hållbar produktionsutveckling (ML), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-300187.
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På KTH-Södertälje finns laborationsutrustning som inte har använts på länge. Utrustningen som behandlats i detta examensarbete är ett antal servobord. Ett servobord har en servomotor som roterar en cirkulär platta. Plattan är försedd med vita fält och en visare, och på utsidan av plattans omkrets finns markörer för olika vinklar. Detta tillåter att motorns vridningsvinkel går att avläsa. De vita fälten på plattan kan avläsas med optiska sensorer och möjliggör att motorn kan styras med hjälp av pulser. Motorn på servobordet är även sammanlänkad med en potentiometer. Potentiometern tillåter att spänningsnivåer, som står i relation till motorns vridningsvinkel, kan utläsas. Ett önskemål fanns om att denna utrustning ska kunna används i en laboration. Målet meddetta arbete är att programmera system för styrning av motorn till en önskad position. Därefter ska dessa system kunna ligga till grund för en laboration. De olika positionerna som motorn önskas styras till betraktades som våningsplan i ett hissystem. Visaren på den cirkulära plattan betraktades som en hisskorg. I LabVIEW skapades det användargränssnitt som tillåter att en användare bestämmer vilket våningsplan hissen ska åka till. För att skapa laborationen var nästa steg i arbetet att ta bort delar av programmeringen för att låta studenterna komplettera programkoden. Slutligen skrevs en laborationsinstruktion.At KTH Södertälje there is laboratory equipment that has not been used for a long time. The equipment that was used in this project is several servo boards. A servo board is equipped with a servo motor that rotates a circular plate that has white fields and a pointer, and on the outside of the plate´s perimeter there are markings that indicate different angles. This allows reading of the motor´s angular position. The white fields on the plate can be detected by optical sensors and enables the use of pulses to control the motor. The motoron the servo board is also connected to a potentiometer. The potentiometer allows reading of the voltage that correlates to the angular position of the motor. A request was made about using this equipment in a laboratory exercise. The objective of this project is to program a system to allow control of the motor to a desired position. These systems will then be the basis of a laboratory exercise. The different desired positions of the motor were regarded as floors in an elevator system. The pointer on the circular plate was regarded as the elevator cage. A user interface was created in LabVIEW that allows a user to decide which floor the elevator should go to. To make the laboratory exercise, the next step was to remove parts of the program that the students then must complete. The last part of the project was to write an instruction for the laboratory exercise.
2
De, Lucia Chiara. "The FOOT experiment: the associated physics and its acquisition system." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/15773/.
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According to the World Health Organization (WHO) about 8.8 million of deaths in 2015 were caused by cancer. The treatments for cancer are several: beyond the traditional surgery, chemiotherapy and radiotherapy, also hadrontherapy is developing. The hadrontherapy cures the cancer with ion or proton beams. Every tumor type requires a specific treatment plan called Treatment Planning System (TPS), that it is not complete for hadrontherapy because there is the need of knowing the dose deposition both due to the beam particle ionization and the fragmentation.
In this context, the FOOT experiment aims at collecting measurements and data about target or projectile fragmentation cross sections since currently the experimental panorama is rather scarse on the measurements of fragments produced in the interaction of protons or ions with tissue nuclei
at the hadrontherapy energies (about 250 MeV for protons and 350 MeV/n for carbon ions).
At the moment, the FOOT experiment is at its start and so are the detectors setup and the acquisition system projects. On these bases, this thesis work reports the scientific panorama, highlighting the need of covering the measurement lacks. Moreover, a preliminary example of DAQ system is described with a connected online monitoring system to test the DAQ boards.
3
Pavlov, Anton, and Jonathan Särnholm. "Ramverk för temperaturstyrning i Matlab : Programmering av DAQ , datalogger,temperaturskåp och spänningsaggregat." Thesis, Linnéuniversitetet, Institutionen för fysik och elektroteknik (IFE), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-54402.
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Examensarbetet utfördes på Calmon. Ett Ramverket för instrumenten:DA/AD - Modul, datalogger, klimatkammare och nätaggregat skapades medhjälp av programmet Matlab. Arbetet utfördes med hjälp av programmeringi syfte att kunna genomföra mätningar på föremål i klimatkammaren.Kommandon för styrning av instrumenten implementerades. För att vägledaanvändaren utvecklades en specifikation och ett exempelprogram.
4
Astore, Riccardo. "Test hardware di schede ROD per la catena DAQ dell'esperimento ATLAS pixel detector." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13431/.
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LHC, l’acceleratore di particelle del CERN di Ginevra, permette studi molto rilevanti nell’ambito della fisica subnucleare. L’importanza che ricopre in questo ambito è enorme ed è per questo che si devono utilizzare tecnologie all’avanguardia nella sua costruzione. É inoltre fondamentale disporre di un sistema di acquisizione dati più moderno ed efficiente possibile, necessario per gestire tutti i vari segnali elettrici derivanti dalla conversione di un evento fisico, al fine di renderne misurabili e quantificabili le grandezze di interesse. In questa tesi vengono eseguiti i test hardware di funzionalità delle schede ROD (Read-Out Driver) destinate al Layer 1 dell’esperimento Pixel Detector di ATLAS, prima che queste vengano spedite nei laboratori del CERN. Le schede hanno il compito di gestire i segnali in arrivo dal Pixel Detector, per poi inviarli ai computer per la successiva elaborazione. Un sistema simile era già implementato e funzionante (SiROD), ma il degrado dei chip unito ai continui aumenti di luminosità di LHC ha reso necessario lo sviluppo di nuove schede che sopportassero una larghezza di banda maggiore, dovuta all’aumento dei dati da gestire. Le schede ROD qui testate sono le stesse implementate in IBL e nel Layer 2 di Pixel Detector.
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Collesei, Marco. "Quality investigation of an ATLAS Phase-II DAQ board via Signal Integrity simulations." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/23188/.
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The Large Hadron Collider (LHC) is the most significant expression of the efforts of physicists all over the world and it is always under development to push its colliding and detection limits. As a matter of fact, by the end of 2024 the installation work of a renewed collider, capable of reaching a nominal luminosity of 7.5x10^34 cm-2*s-1, will take place. The new apparatus, called High Luminosity-LHC (HL-LHC), will be operational at least for another decade and, to accomplish the challenges posed by the search for new physics, the main detectors such as A Toroidal LHC ApparuS (ATLAS) and Compact Muon Solenoid (CMS) will be upgraded for Phase-II. Together with the structural changings in ATLAS sub-detectors, the entire Trigger and Data Acquisition (TDAQ) strategy will be upgraded by the implementation of new technologies. Among these technology advancements the FrontEnd LInk eXchange (FELIX) DAQ board, developed by Brookhaven National Laboratory (BNL) together with ATLAS, will play a prominent role. The new high-speed Printed Circuit Board (PCB) will handle the communication between the sub-detectors, the first level of trigger and the Dataflow, thanks to its multi Gb/s links and programmable logic, which makes the board a versatile and long-lasting element of the TDAQ chain. My personal work has been testing some of the transmission channels of FELIX Phase-II board, in the light of Signal Integrity (SI), with the goal to supply simulation results confirming the reliability of its high data-rate lines. Ultimately, I have given evidence that high-speed digital design is a key step in DAQ boards research and development, and it is an essential instrument to reach optimal performances.
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Boyd, William J. "EMG Site: A MATLAB-based Application for EMG Data Collection and EMG-based Prosthetic Control." Digital WPI, 2018. https://digitalcommons.wpi.edu/etd-theses/351.
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This thesis describes the system design of EMG Site, a MATLAB-based application for collection and visualization of surface electromyograms (EMGs) and the real-time control of an upper limb prosthesis, including details pertaining to the design of the software and the graphical user interface (GUI). The application consists of features that aid in the visualization of the collected EMG data and the control of a prosthesis. Visualization of the collected EMG data is handled in one of two ways: an oscilloscope-like view showing the raw EMG data collected with respect to time, or a radial plot showing the processed EMG data collected with respect to the site of EMG data collection on the arm. The control of a hand-wrist prosthesis is primarily regulated through the use of signal processing designed to relate EMG to torque and is visualized in the tracking window - a plotting window showing both a user-control cursor and an either static (or dynamic) computer-controlled target. This thesis concludes with a description of the real-time capabilities of the application regarding both the visualization of the collected EMG data as well as the control of a prosthesis.
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Abbas, Azhar. "GPIB- kommunikation och PID reglering med LabVIEW." Thesis, Karlstads universitet, Fakulteten för teknik- och naturvetenskap, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-4714.
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LabVIEW ger en snabb och enkel tillgång till att styra instrument och en mycket stor databas med drivrutiner för DAQ-kort och olika datorgränssnitt (GPIB, serie, osv.). Många instrument och datorer kan anslutas till GPIB-bussen. Detta kan ge en praktisk modell för utveckling av instrumentets styrprogram i LabVIEW med hjälp av GPIB-gränssnittet. Ett program i LabVIEW 8.2 med hjälp av GPIB-bussen kan kopplas till t.ex. multimetern (HP-34401A) för att mäta och visa multimeters noggrannhet. Men på grund av fel i drivrutiner för GPIB-gränssnittet kunde jag inte köra programmet med GPIB-bussen. Genom att använda LabVIEW 8.2 med hjälp av DAQ-kort kan en PID-regleringsalgoritm simuleras. PID konstrueras med virtuella instrument som innehåller alla nödvändiga komponenter och utrustning som krävs för att reglera någon linjär eller olinjär process exempelvis att nivåreglera två tankar i serie. Här stöter vi på alla de grundläggande regulatorer och får möjlighet att bygga PID med LabVIEW på ett enkelt sätt. Det finns två metoder för att bygga PID. Den första är med matematiska funktioner och den andra är med ’’Simulations functions control’’. Arbetet visar att bägge metoderna fungerar bra för att lösa uppgiften jämfört med färdiga PID-controls på LabVIEW.
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Yao, Hongbin. "Implementation of UNIX workstation and BIT3 VME BUS adaptor in real time DAQ system." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/10771.
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Čípek, Radek. "VYTVOŘENÍ PROGRAMU PRO ZÁTĚŽOVÉ ZKOUŠKY EL.MOTORŮ-sběr dat ze systémů teplotních senzorů (RS232,USB,PCI DAQ) a výkonového analyzátoru (GPIB) v LabView." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229517.
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This thesis deals with the creation of a program for collecting data from three optional systems of temperature sensors (RS232, USB and PCI DAQ), torque shaft and a power analyzer (GPIB) in LabVIEW. The implementation of the results to Excel by the automatic periodical writing of the gained data (LabVIEW › Excel).
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Polito, Martina. "USB monitor in LabVIEW per il controllo remoto delle schede DAQ del pixel detector di ATLAS." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/8925/.
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L’esperimento ATLAS al CERN di Ginevra ha un complesso sistema di rivelatori che permettono l’acquisizione e il salvataggio di dati generati dalle collisioni di particelle fondamentali. Il rivelatore per cui trova una naturale applicazione il lavoro di questa tesi è il Pixel Detector. Esso è il più vicino alla beam pipe e si compone di più strati, il più interno dei quali, l’Insertable B-Layer (IBL), aggiunto in seguito allo shut down dell’LHC avvenuto nel 2013, ha apportato diverse innovazioni per migliorare la risoluzione spaziale delle tracce e la velocità di acquisizione dei dati. E’ stato infatti necessario modificare il sistema di acquisizione dati dell’esperimento aggiungendo nuove schede chiamate ROD, ReadOut Driver, e BOC, Back Of Crate. Entrambe le due tipologie di schede sono montate su un apparato di supporto, chiamato Crate, che le gestisce. E’ evidente che avere un sistema remoto che possa mostrare in ogni momento il regime di funzionamento del crate e che dia la possibilità di pilotarlo anche a distanza risulta estremamente utile. Così, tramite il linguaggio di programmazione LabVIEW è stato possibile progettare un sistema multipiattaforma che permette di comunicare con il crate in modo da impostare e ricevere svariati parametri di controllo del sistema di acquisizione dati, come ad esempio la temperatura, la velocità delle ventole di raffreddamento e le correnti assorbite dalle varie tensioni di alimentazione. Al momento il software viene utilizzato all’interno dell’Istituto Nazionale di Fisica Nucleare (INFN) di Bologna dove è montato un crate W-Ie-Ne-R, speculare a quello presente al CERN di Ginevra, contenente delle schede ROD e BOC in fase di test. Il progetto ed il programma sviluppato e presentato in questa tesi ha ulteriori possibilità di miglioramento e di utilizzo, dal momento che anche per altri esperimenti dell’LHC le schede di acquisizione vengono montate sullo stesso modello di crate.
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Lynghed, Christoffer, and Viktor Andersson. "Beräkning av massa genom mätning av hydraultryck." Thesis, Karlstad University, Karlstad University, Faculty of Technology and Science, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-4644.
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Vår uppgift var att ta fram en algoritm för hur lastens massa förhåller sig till hydraultrycket i ett hydraulsystem för en truck. Algoritmen skulle sedan implementeras i en vågprototyp. Lösningen skulle vara kostnadseffektiv.
För att undersöka sambandet utfördes mätserier där vi provade olika komponenter. Resultatet av mätserierna analyserades och vi fann ett samband mellan massan och hydraultrycket. Med hjälp av sambandet kunde sedan programkod för en vågprototyp skrivas tillsammans med tillhörande funktioner.
Resultatet blev en fungerande vågprototyp för trucken som användes. Denna prototyp behöver dock testas och utvärderas ytterligare på fler truckar innan en eventuell slutprodukt kan bli aktuell.
Our task was to develop an algorithm for the relationship between mass and hydraulic pressure in a hydraulic system in a forklift. The algorithm was then to be implemented in a prototype of a forklift scale. The solution had to be cost-effective.
To examine the relationship we performed series of measurements in which various components were tested. The results of the measurements were analyzed and we found a correlation between mass and hydraulic pressure. Due to this we could write a code for a forklift scale prototype with features.
The forklift scale prototype worked on the forklift that we used but it needs to be tested and evaluated further in more forklifts before a final product can be made.
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Isaksson, Jonas, and haben bemnet. "Insamling av data från en linjär bildsensor med bearbetning i LabVIEW." Thesis, Växjö University, School of Mathematics and Systems Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-1579.
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Insamling av data med hjälp av en linjär bildsensor, I/0 modul och LabVIEW i realtid för analys.Uppgiften innefattar val av skanner och I/O modul samt utvärdering av den insampladeinformationen. I rapporten beskrivs det också hur olika enheter synkroniseras med varandra.
This report deals about how to collect data with a linear image sensor, I/0 modul and LabVIEW in real time for further analyses. The report declares the choices of scanner and I/O modul for the insamples of data information. This rapport also tells about how to synchronize the equipments.
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Gandrajula, Reddy Pratap. "Study of run time errors of the ATLAS Pixel detector in the 2012 data taking period." Thesis, University of Iowa, 2013. https://ir.uiowa.edu/etd/2499.
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The high resolution silicon Pixel detector is critical in event vertex reconstruction and in particle track reconstruction in the ATLAS detector. During the pixel data taking operation, some modules (Silicon Pixel sensor +Front End Chip+ Module Control Chip (MCC)) go to an auto-disable state, where the Modules don't send the data for storage. Modules become operational again after reconfiguration. The source of the problem is not fully understood. One possible source of the problem is traced to the occurrence of single event upset (SEU) in the MCC. Such a module goes to either a Timeout or Busy state. This report is the study of different types and rates of errors occurring in the Pixel data taking operation. Also, the study includes the error rate dependency on Pixel detector geometry.
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Lenzi, Thomas. "Development of the DAQ System of Triple-GEM Detectors for the CMS Muon Spectrometer Upgrade at LHC." Doctoral thesis, Universite Libre de Bruxelles, 2012. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/241812.
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The Gas Electron Multiplier (GEM) upgrade project aims at improving the performance of the muon spectrometer of the Compact Muon Solenoid (CMS) experiment which will suffer from the increase in luminosity of the Large Hadron Collider (LHC). After a long technical stop in 2019-2020, the LHC will restart and run at a luminosity of 2 10^34 cm^-2 s^-1, twice its nominal value. This will in turn increase the rate of particles to which detectors in CMS will be exposed and affect their performance. The muon spectrometer in particular will suffer from a degraded detection efficiency due to the lack of redundancy in its most forward region. To solve this issue, the GEM collaboration proposes to instrument the first muon station with Triple-GEM detectors, a technology which has proven to be resistant to high fluxes of particles. Within the GEM collaboration, the Data Acquisition (DAQ) subgroup is in charge of the development of the electronics and software of the DAQ system of the detectors.This thesis presents the work of the author as lead developer of the firmware for the front-end and back-end electronics. These developments have been performed from the ground up and designed to transfer data from the analog front-end to the off-detector electronics while offering extensive control and monitoring capabilities. The developed DAQ chain has been tested extensively during two test beam campaigns which provided results on both the stability of the system and the efficiency of the detectors. The results of these campaigns are described in the present thesis. Further characterization of the electronics is also described along with the procedures and tools built to qualify the components for their installation in CMS. Finally, the results of the irradiation tests performed on the on-detector electronics are presented. These allowed us to understand the effects of radiation on the electronic boards used for the GEM upgrade project and the impact that it has on the design of the firmware for CMS.Additionally, the work of the author on a new architecture for DAQ systems is described. The latter uses modified network topologies and novel web technologies to increase the available bandwidth on the network and yield an event-driven system.Cette thèse de doctorat s'inscrit dans le projet de mise à niveau du spectromètre à muons du Compact Muon Solénoid (CMS) auprès du Large Hadron Collider (LHC). Après un arrêt pour maintenance prévu en 2019-2020, le LHC reprendra son programme de recherche à une luminosité de 2 $ imes$ 10^34 cm^-2 s^-1, soit deux fois sa valeur nominale. Ceci aura pour conséquence d'accroître le taux de particules auquel seront soumis les détecteurs de CMS et d'entraver l'efficacité de détection de ces derniers. Le spectromètre à muons de CMS sera tout particulièrement touché à cause du manque de redondance dans sa partie avant. Afin de palier à ce problème, il est proposé d'installer des détecteurs Gas Electron Multipliers (GEM) dans la première station à muons. La technologie GEM répond aux besoins de CMS en offrant une excellente efficacité de détection à de hauts flux de particules. Au sein de la collaboration GEM, le sous-groupe en charge du système d'acquisition de données (DAQ) doit développer l'électronique et les logiciels de gestion de la chaîne de lecture des détecteurs.Nous présentons ici le travail de l'auteur réalisé en tant que principal développeur du firmware pour l'électronique du système DAQ. Ces développements visent à créer une architecture qui achemine les données depuis l'électronique de lecture du détecteur jusqu'aux systèmes situés dans la zone de comptage, tout en offrant la possibilité de contrôler et surveiller l'ensemble des composants du DAQ. Le système mis en place a été largement testé durant deux campagnes de tests en faisceaux qui ont fourni des informations concernant la stabilité du DAQ ainsi que des mesures de l'efficacité des détecteurs. Nous décrivons également l'ensemble des travaux réalisés afin de caractériser les composants électroniques avant leur installation dans CMS ainsi que les résultats des tests d'irradiation effectués sur l'électronique du détecteur. Ces derniers permettent de mieux comprendre les conséquences des radiations sur le système et de développer des méthodes de mitigation.De plus, le travail de l'auteur sur la création d'une nouvelle architecture de système DAQ est décrit. Cette dernière combine les avancées récentes en terme de technologies web à une topologie de réseaux non-classique afin d'accroître la bande passante disponible et de créer un système réactif.
Doctorat en Sciences
info:eu-repo/semantics/nonPublished
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Lenzi, Thomas. "Development of the DAQ System of Triple-GEM Detectors for the CMS Muon Spectrometer Upgrade at LHC." Doctoral thesis, Universite Libre de Bruxelles, 2016. https://dipot.ulb.ac.be/dspace/bitstream/2013/241812/4/thesis.pdf.
Full textAbstract:
The Gas Electron Multiplier (GEM) upgrade project aims at improving the performance of the muon spectrometer of the Compact Muon Solenoid (CMS) experiment which will suffer from the increase in luminosity of the Large Hadron Collider (LHC). After a long technical stop in 2019-2020, the LHC will restart and run at a luminosity of 2 10^34 cm^-2 s^-1, twice its nominal value. This will in turn increase the rate of particles to which detectors in CMS will be exposed and affect their performance. The muon spectrometer in particular will suffer from a degraded detection efficiency due to the lack of redundancy in its most forward region. To solve this issue, the GEM collaboration proposes to instrument the first muon station with Triple-GEM detectors, a technology which has proven to be resistant to high fluxes of particles. Within the GEM collaboration, the Data Acquisition (DAQ) subgroup is in charge of the development of the electronics and software of the DAQ system of the detectors.This thesis presents the work of the author as lead developer of the firmware for the front-end and back-end electronics. These developments have been performed from the ground up and designed to transfer data from the analog front-end to the off-detector electronics while offering extensive control and monitoring capabilities. The developed DAQ chain has been tested extensively during two test beam campaigns which provided results on both the stability of the system and the efficiency of the detectors. The results of these campaigns are described in the present thesis. Further characterization of the electronics is also described along with the procedures and tools built to qualify the components for their installation in CMS. Finally, the results of the irradiation tests performed on the on-detector electronics are presented. These allowed us to understand the effects of radiation on the electronic boards used for the GEM upgrade project and the impact that it has on the design of the firmware for CMS.Additionally, the work of the author on a new architecture for DAQ systems is described. The latter uses modified network topologies and novel web technologies to increase the available bandwidth on the network and yield an event-driven system.Cette thèse de doctorat s'inscrit dans le projet de mise à niveau du spectromètre à muons du Compact Muon Solénoid (CMS) auprès du Large Hadron Collider (LHC). Après un arrêt pour maintenance prévu en 2019-2020, le LHC reprendra son programme de recherche à une luminosité de 2 $ imes$ 10^34 cm^-2 s^-1, soit deux fois sa valeur nominale. Ceci aura pour conséquence d'accroître le taux de particules auquel seront soumis les détecteurs de CMS et d'entraver l'efficacité de détection de ces derniers. Le spectromètre à muons de CMS sera tout particulièrement touché à cause du manque de redondance dans sa partie avant. Afin de palier à ce problème, il est proposé d'installer des détecteurs Gas Electron Multipliers (GEM) dans la première station à muons. La technologie GEM répond aux besoins de CMS en offrant une excellente efficacité de détection à de hauts flux de particules. Au sein de la collaboration GEM, le sous-groupe en charge du système d'acquisition de données (DAQ) doit développer l'électronique et les logiciels de gestion de la chaîne de lecture des détecteurs.Nous présentons ici le travail de l'auteur réalisé en tant que principal développeur du firmware pour l'électronique du système DAQ. Ces développements visent à créer une architecture qui achemine les données depuis l'électronique de lecture du détecteur jusqu'aux systèmes situés dans la zone de comptage, tout en offrant la possibilité de contrôler et surveiller l'ensemble des composants du DAQ. Le système mis en place a été largement testé durant deux campagnes de tests en faisceaux qui ont fourni des informations concernant la stabilité du DAQ ainsi que des mesures de l'efficacité des détecteurs. Nous décrivons également l'ensemble des travaux réalisés afin de caractériser les composants électroniques avant leur installation dans CMS ainsi que les résultats des tests d'irradiation effectués sur l'électronique du détecteur. Ces derniers permettent de mieux comprendre les conséquences des radiations sur le système et de développer des méthodes de mitigation.De plus, le travail de l'auteur sur la création d'une nouvelle architecture de système DAQ est décrit. Cette dernière combine les avancées récentes en terme de technologies web à une topologie de réseaux non-classique afin d'accroître la bande passante disponible et de créer un système réactif.
Doctorat en Sciences
info:eu-repo/semantics/nonPublished
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Fair, Chad. "Synchronous Sampling Sideband Orders from Helical Planetary Gear Sets." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36923.
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The sideband phenomenon is a common but obscure characteristic of the Rotary Dynamics field. In the automotive industry these sidebands have been found to produce a poor sound quality, resulting in customer dissatisfaction and warranty returns. In the interest of continued product improvement, research and development must resolve uncertainties in the current design methods. Qualitative relationships between the sideband characteristics and design parameters have developed in recent years, but the quantitative goal hasn't been achieved.
A Synchronous Sampling (SS) data acquisition system is applied to a helical planetary gear set to improve the understanding of the sideband characteristics and enhance the design process. An optical encoder, a component of the SS system, mechanically locked to the rotating system controls the A/D converter to sample at constant shaft angle increments. The phase-locked nature of SS allows the use of vector averaging to significantly lower the noise floor and improve the representation of the order domain.
In this work, the advantages of using a SS system with vector averaging capabilities are compared to the disadvantages of using a fixed sampling (FS) system. Utilizing the SS tool, this work also illustrates the influences of loading styles and values and speed on a gearmesh and its dominant sideband orders. Inspection of these influences suggests an opportunity for future work.Master of Science
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Gerlach, Thomas [Verfasser], and Reinhard [Akademischer Betreuer] Männer. "Development of the DAQ Front-end for the DSSC Detector at the European XFEL / Thomas Gerlach. Betreuer: Reinhard Männer." Mannheim : Universitätsbibliothek Mannheim, 2013. http://d-nb.info/1037076672/34.
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Filippini, Francesco. "Emulation of neutrino-induced muon tracks in a neutrino telescope using the test-bench of the data acquisition system of the KM3NeT." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/21707/.
Full textAbstract:
Oggi l’astronomia multimessaggero offre l’opportunità di investigare, in un modo mai
fatto prima, l’universo. In questo quadro l’astrofisica a neutrini e i conseguenti telescopi
a neutrini forniscono uno sguardo privilegiato e complementare rispetto alle altre branche
di osservazione e nel prossimo futuro permetteranno di gettare luce e di misurare, con
estrema precisione, il flusso di neutrini di origine cosmica di alta energia. Questa tesi
si sviluppa all’interno dell’esperimento KM3NeT, una rete di rivelatori in costruzione
nelle acque abisalli del Mar Mediteranno, che raggiungerà le dimensioni finali di più di
un km3 di acqua instrumentata. Nello specifico la tecnologia necessaria alla costruzione
di questi detectors deve essere testata e validata in maniera molto accurata, data la
completa inaccesibilità dei siti di installazione. Per questo motivo sono nati diversi
laboratori, all’interno della collaborazione, che rappresentano un punto nodale per lo
sviluppo, il mantenimento e i test di tutti gli apparati e la strumentazione distribuita
in fondo al mare. Fra questi laboratori vi è la Bologna Common Infrastructure (BCI)
test-bench, in cui è stata riprodotta l’elettronica e tutto il sistema di acquisizione dati
di un’intera stringa di KM3NeT. Questa tesi è basata sul lavoro di sviluppo delle schede
OctoPAES, in grado di emulare segnali di fotoni sui fotomoltiplicatori come se fossero
stati generati dal passaggio di particelle reali, all’interno però di un ambiente controllato
e accessibile come la BCI. Queste schede inoltre sono in grado di generare un flusso di
dati manipolabile dall’esterno, capace quindi di evidenziare potenziali malfunzionamenti
o punti critici dell’elettronica, del sistema di acquisizione dati e non solo.
19
Ebrahimi, Aliakbar [Verfasser], and Erika [Akademischer Betreuer] Garutti. "Jet Energy Measurements at ILC : Calorimeter DAQ Requirements and Application in Higgs Boson Mass Measurements / Aliakbar Ebrahimi ; Betreuer: Erika Garutti." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2017. http://d-nb.info/1147567433/34.
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20
Augustsson, Joacim, and Gustaf Larsson. "Styrning av stegmotor för robot med NICompactRIO." Thesis, Växjö University, School of Mathematics and Systems Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-6280.
Full textAbstract:
Arbetet handlar om styrning och reglering av stegmotorer och permanentmagnetmotorer, genom attanvända det grafiska programmeringsspråket Labview från National Instruments (NI) tillsammansmed hårdvara i form av NI CompactRIO och NI USB datainsamlingskort. Implementeringen har sketti form av en robot med ett för uppgiften specialbyggt styrsystem, PWM – styrning av enpermanentmagnetmotor och en egenkonstruerad manöverdosa.
This report deals about controlling and regulating stepping motors and PM-motors by using thegraphical programming language NI Labview, with hardware NI CompactRIO and NI DAQ-USB.The implementation has been done by controlling a robot with a for the task built system, controllinga PM-motor by PWM and a own created controller.
21
Mullen, Michael P. "DATA ACQUISITION, ANALYSIS, AND MODELING OF ROTORDYNAMIC SYSTEMS." DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2164.
Full textAbstract:
Data acquisition systems for rotordynamic analysis and machine vibration were explored for the purpose of replacing the obsolete Bently Nevada ADRE 208 and ADRE for Windows system. These included the development of Matlab based custom data acquisition systems and a user interface. A model of an anisotropic rotor response undergoing transient speed was developed for the rapid prototyping and testing of data acquisition systems. Several methods for the measurement of amplitudes and phase in both the time domain and frequency domain were developed and compared. An alternate data acquisition method which is more inline with industry practices was created for the purpose of spectral analysis. Additionally, an optimized data acquisition strategy was developed for implementation within the Matlab app which included batch processing, state-based acquisition, and differentiated vector and waveform acquisition rates. A Bently Nevada 2300/20 vibration monitor was configured for use in the lab but found unsuitable for replacing the ADRE 208. Ultimately a Bently Nevada ADAPT 3701/44 Vibration Monitor was configured and found to be an adequate replacement for the ADRE 208 system for use in the Cal Poly Vibrations Lab.
22
Savarese, Andrea. "Development of an enhanced transfer data channel for a hybrid SoC FPGA used in a DAQ system aimed at improving hadrontherapy protocols." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/21044/.
Full textAbstract:
In questa tesi è presentato il lavoro svolto su un sistema di acquisizione utilizzato in un esperimento di fisica nucleare facente parte del progetto FOOT, volto ad ottenere ulteriori informazioni sulla frammentazione nucleare per migliorare i protocolli medici di adroterapia e le metodologie di radioprotezione spaziale. Il sistema si basa su una scheda Terasic DE10-Nano che monta un SoC FPGA Cyclone V. L'obiettivo principale del lavoro è stato aumentare il throughput del trasferimento dei dati acquisiti dai sensori verso la memoria principale: a tal fine è stata utilizzata direttamente la memoria RAM del processore integrato come buffer circolare temporaneo. È stata inoltre implementata l'interfaccia (realizzata dall'Università di Perugia) per la sensoristica e un controller per l'ADC della scheda. Il lavoro ha compreso sia lo sviluppo del firmware, quindi VHDL e Platform Designer, sia del software, con la scrittura di funzioni in C++ per l'interfacciamento all'hardware. È stata inoltre necessaria una modifica al Device Tree del kernel del sistema operativo Linux presente sul SoC. Il sistema è stato simulato e testato in laboratorio con esito positivo. La scheda DE10-Nano vanta un banda di trasmissione massima teorica di 60 MB/s, che però scende a circa 10 MB/s quando la scheda è installata nel sistema completo di acquisizione, limitazione dovuta a fattori esterni alla scheda, come lo stato della rete del laboratorio e l'overhead degli altri componenti. Questi risultati sono eccellenti e, inoltre, il massimo throughput di 60 MB/s supporterà future ottimizzazioni del sistema senza creare colli di bottiglia per gli altri dispositivi. Operazioni di ottimizzazione sull'infrastruttura sono tutt'ora in corso, quindi ci si aspetta un ulteriore incremento della performance in un vicino futuro.
23
Alfonsi, Fabrizio. "A PCI Express board designed to interface with the electronic phase-2 upgrades of the ATLAS detectors at CERN." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/14540/.
Full textAbstract:
Nei prossimi 10 anni è in previsione un aggiornamento radicale dell'acceleratore LHC al CERN finalizzato al raggiungimento di più alti valori di luminosità istantanea (oltre \begin{math}5 \times 10^{34}cm^{-2}s^{-1}\end{math}) ed integrata (oltre un fattore 10 rispetto a quella attuale). Conseguentemente, anche i rilevatori degli esperimenti che lavorano al CERN, così come i loro sistemi di acquisizione dati, dovranno essere aggiornati per poter gestire un flusso notevolmente maggiore rispetto a quello utilizzato finora. Questa tesi tratta in particolare di una nuova scheda elettronica di lettura, progettata e testata nel laboratorio di elettronica del Dipartimento di Fisica ed Astronomia dell'Università di Bologna e nel laboratorio di elettronica della Sezione INFN (Istituto Nazionale di Fisica Nucleare) di Bologna. Le motivazioni che hanno indotto lo sviluppo della scheda prototipale sono molteplici. Un primo obiettivo da perseguire è stato quello di aggiornare la versione attuale delle schede elettroniche di acquisizione dati usate oggi nel Pixel Detector dell'esperimento ATLAS, visto che sono anch'esse sotto la responsabilità della sezione INFN di Bologna. Secondariamente, la scheda (nominata Pixel-ROD) è orientata a gestire le esigenze elettroniche che seguiranno l'upgrade di LHC durante la fase 2. La complessità del progetto e l'inerzia intrinseca di una vasta collaborazione come quella di ATLAS, hanno poi indotto lo sviluppo di questo progetto elettronico in largo anticipo rispetto al vero upgrade di fase 2 di LHC, previsto per il 2024. In questo modo saranno anche più facilmente eseguibili eventuali aggiornamenti tecnologici in corso d'opera, senza dover riprogettare da zero un sistema di acquisizione dati completo.
24
Kadic, Safet, Alen Kazazic, and Florim Mustafa. "Exempel på användning av LabVIEW vid : mätning, reglering och signalbehandling." Thesis, Växjö University, School of Mathematics and Systems Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-636.
Full textAbstract:
Arbetet handlar om hur man med hjälp av LabVIEW 8.0 kan lösa olika uppgifter. Uppgifterna löses med hjälp av ett DAQ-kort. DAQ-kortet gör det möjligt att mata in signaler, som sedan behandlas efter behov i programmet och därefter skickas ut genom DAQ- kortet till olika komponenter som man vill styra. DAQ-kortet klarar att behandla både analoga och digitala signaler. LabVIEW 8.0 och dess historia, DAQ-kortet samt de olika processerna/uppgifter beskrivs mer utförligt i arbetet.
25
Lööf, Sam. "Evaluation of Protocols for Transfer of Automotive Data from an Electronic Control Unit." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-176080.
Full textAbstract:
Nowadays almost all motorized vehicles use electronic control units (ECUs) to control parts of a vehicle’s function. A good way to understand a vehicle’s behaviour is to analyse logging data containing ECU internal variables. Data must then be transferred from the ECU to a computer in order to study such data. Today, Keyword Protocol (KWP) requests are used to read data from the ECUs at Scania. The method is not suitable if many signals should be logged with a higher transfer rate than the one used today. In this thesis, communication protocols, that allow an ECU to communicate with a computer, are studied. The purpose of this master’s thesis is to examine how the transfer rate of variables from Scania’s ECUs to a computer can become faster compared to the method used today in order to get a more frequent logging of the variables. The method that was chosen was implemented, evaluated and also compared to the method used today. The busload, total CPU load and CPU load for the frequency used during the experiments, 100 Hz, was also examined and evaluated. The experiments performed show that the method chosen, data acquisition (DAQ) with CAN Calibration Protocol (CCP), increased the transfer rate of the internal ECU variables significantly compared to the method using KWP requests. The results also show that the number of signals have a major impact on the busload for DAQ. The busload is the parameter that limits the number of signals that can be logged. The total CPU load and the CPU load for 100 Hz are not affected significantly compared to when no transmissions are performed. Even though the busload can become high if many variables are used in DAQ, DAQ with CCP is preferable over KWP requests. This is due to the great increase in transfer rate of the ECU internal variables and thus a great increase in the logging frequency.Nuförtiden används styrenheter (ECUer) för att styra delar av ett fordons funktion i så gott som alla motoriserade fordon. Ett bra sätt att förstå ett fordons beteende är att analysera loggningsdata som innehåller interna styrenhetsvariabler. Data måste då överföras från styrenheten till en dator för att data ska kunna studeras. Idag används Keyword Protocol-förfrågningar (KWP-förfrågningar) för att läsa data från Scanias styrenheter. Metoden är inte lämplig om man vill logga många variabler med en högre överföringshastighet än den som används idag. I detta examensarbete studeras kommunikationsprotokoll som tillåter en styrenhet att kommunicera med en dator. Examensarbetets syfte är undersöka hur överföringshastigheten av variablerna, från Scanias styrenheter till en dator, kan ökas jämfört med den metod som används idag för att få en mer frekvent loggning av variablerna. Metoden som valdes implementerades, utvärderades och jämfördes med metoden som används idag. Busslasten, totala CPU-lasten och CPU-lasten för den frekvens som användes under experimenten 100 Hz har också undersökts och evaluerats. De utförda experimenten visar att den valda metoden, data acquisition (DAQ) med CAN Calibration Protocol (CCP), ökade överföringshastigheten av de interna styrenhetsvariablerna betydligt jämfört med metoden KWP-förfrågningar. Experimenten visar också att antalet signaler har stor inverkan på busslasten för DAQ. Busslasten är den parameter som begränsar antalet signaler som kan loggas. Den totala CPU-lasten och CPU-lasten för 100 Hz påverkas inte betydligt jämfört med när inga överföringar görs. DAQ med CCP är att föredra framför KWP-förfrågningar även om busslasten blir hög för DAQ då den stora ökningen i överföringshastighet av de interna styrenhetsvariablerna medför en mer frekvent loggning av variablerna.
26
Oliva, Alessandro. "Implementazione software/firmware di un sistema di acquisizione dati per interfacciamento a matrici di sensori tramite una demo-board commerciale basata su FPGA." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2019.
Find full textAbstract:
Nel mondo della ricerca della fisica nucleare, subnucleare e particellare diventa sempre più importante avere sistemi di acquisizione dati solidi ed affidabili da mettere a disposizione di progetti sperimentali per l'analisi di dati ottenuti con sensori monolitici. L'obiettivo di questo studio è cercare di progettare un sistema protitipale di questi sistemi di acquisizione, impiegando hardware a basso costo e altamente personalizzabile come dei System-on-Chip basati su FPGA, permettendo di lavorare sia a livello di logica programmabile che a livello di processing system, potendo raggiungere prestazioni molto alte, requisito cruciale poiché il tracking deve essere ad alta precisione sia nello spazio che nel tempo.
27
Hedlund, Jonas, and Simon Hammarström. "Design och framtagande av mätanordning för ström och effek på trefas ledare : Josi Periferi strömmeter." Thesis, Uppsala universitet, Elektricitetslära, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-257677.
Full textAbstract:
The assignment is issued by Scania Maintence AB seeking a new approach to detect power changes in their industrial processes. The work has taken place at Ångströmslaboratoriet and tests have been performed at Scania AB Södertälje. Today’s society consumes enormous amount of energy. In both economically and environmental view, it is important that the processes are effective, with high power factor. There are many ways to measure power in the industry, what they all have in common is that the installation is advanced, requires time and planning. Only a competent electrician may install the measuring device in the distribution box. The purpose of the project is to build a prototype for power measurement that can be easily used outside the distribution box, thus simplifying the procedure and shortening the time required. By attaching sensors around the supply cable, the magnetic field asymmetric flux density can be used and induce voltage proportional to the current in the cable. The result is an instrument that with a computer calculates current, phase angle and power. Measurements of the current rms value showed that the maximum difference between our prototype and Scania Maintenances equipmentis up to 29 percent. However, for a longer time (> 15 minutes) the differences between the mean values are only 1.2 percent and the accuracy is calculated to +/-3.67A with 95% confidence intervals. Phase angle accuracy measured to plus 6 minus and 15 percent.Uppgiften är utfärdat av Scania Maintenance AB som söker en ny metod för att se effektförändringar i deras industriprocesser. Arbetet har ägt rum i Ångströmlaboratoriet (Uppsala universitet) och tester har utförts hos Scania AB Södertälje. Dagens samhälle förbrukar enorma mängder energi. Med hänsyn till både miljöpåverkan och ekonomi är det viktigt att processer är effektiva med höga verkningsgrader. Det finns många sätt att mäta effekt inom industrin, det de har gemensamt är att installationen är avancerad, kräver tid och planering. Endast en behörig elektriker får installera mätanordningen. Projektets syfte är att ta fram en prototyp för effektmätning som enkelt kan anmodas utanför centralen och därmed förenkla ingreppet och förkorta tidsåtgången. Genom att fästa sensorer runt ingående matningskabel kan magnetfältets asymmetriska flödestäthet utnyttjas och inducera spänning proportionell mot den ström som går i ledarna. Resultatet är ett instrument som tillsammans med en dator beräknar ström, fasvinkel och effekt. Vid mätning av strömmens effektivvärde beräknades den maximala skillnaden mellan vår prototyp och Scania Maintenances nuvarande utrustning upp till 29 %. Dock under en längre tid (> 15 min) är skillnaderna av medelvärdet endast 1.2 % och noggrannheten beräknas till 3.67A med 95 % konfidensintervall. Fasvinkelns noggrannhet beräknades till plus 6 och minus 12 %.
28
Hanuš, Ivan. "USB měřicí modul pro virtuální instrumentaci." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-221295.
Full textAbstract:
The objective of this thesis is design of the universal USB measuring module for virtual instrumentation. The module is connected to PC via USB interface. The module have analog inputs and analog outputs. The inputs have some switchable ranges, adjustable high-pass and low-pass fiters. Also the module have the digital input-output unit with 8 channels with configurable data direction and voltage level. Physical layer for digital serial interfaces SPI/UART and I2C is also part of this unit. The module is able to communicate with LabVIEW enviroment. The teoretical part contains survey of the commercial USB modules for data acquisition and generation from various manufacturers with its basic parameters. Some selected modules are described in detail. Furthermore the thesis deals with possibilities of connecting the USB module with the LabVIEW enviroment. The practical part deals with the design of input-output circuits and with design of the module itself. Furthemore, tho communication protocol, utility library and demonstration LabVIEW software are described in this part. At the end of this part, there are results of verification measurements. The result of this thesis is completed universal USB measuring module with utility library and demonstration program.
29
Solans, Sánchez Carlos Antonio. "Implementation of the ROD Crate DAQ Software for the ATLAS Tile Calorimeter and a Search for a MSSM Higgs Boson decaying into Tau pairs." Doctoral thesis, Universitat de València, 2010. http://hdl.handle.net/10803/77722.
Full textAbstract:
The
ATLAS
experiment
of
the
LHC
at
CERN
started
its
operation
in
2009.
The
ROD
Crate
DAQ
(RCD)
as
a
part
of
the
Trigger
and
Data
Acquisition
system
(TDAQ)
is
responsible
for
the
operation
of
the
sub-‐detector
specific
hardware
at
the
level
of
the
back-‐end
electronics
crates.
The
RCD
for
the
Tile
Calorimeter
is
fully
implemented.
In
first
place,
the
specific
Tile
hardware
and
software
is
described
in
the
configuration
database.
In
second
place,
the
various
plug-‐ins
for
the
RCD
that
make
use
of
sophisticated
programming
techniques
are
characterized.
The
RCD
performance
can
be
evaluated
in
terms
of
global
DAQ
efficiency,
which
is
over
94%
for
the
considered
period
in
2010
and
in
terms
of
the
average
transition
time
of
operation
during
collisions
where
the
Tile
Calorimeter
has
not
been
the
slowest
sub-‐system
to
change
state.
Other
functionalities
included
in
the
Tile
online
software
are
the
Detector
Verification
System
(DVS)
tests,
which
provide
high
precision
measurements
without
making
use
of
the
Data-‐Flow
infrastructure.
Results
from
these
tests
are
structured
in
a
hardware
oriented
layout
with
a
user
friendly
display.
A
review
is
done
of
the
full
Tile
Calorimeter
read-‐out
chain
from
the
front-‐end
electronics
to
the
data-‐flow
system
to
introduce
the
Optimal
Filtering
algorithm
responsible
for
the
energy
and
time
reconstruction
of
the
signal.
The
performance
of
the
signal
reconstruction
is
evaluated
by
comparing
the
results
provided
by
the
online
reconstruction
done
inside
the
ROD
Digital
Signal
Processors
(DSPs),
and
those
provided
by
the
offline
reconstruction.
Two
different
implementations
are
used
in
the
offline
reconstruction.
The
first
one,
mimics
completely
the
implementation
in
the
DSP.
The
maximum
energy
differences
in
this
case
are
far
below
any
physics
cut
for
energy
(1MeV
in
high
gain
and
40
MeV
in
low
gain)
and
within
the
expected
resolution
for
the
Tile
Calorimeter
for
time
(0.3
ns
in
both
gains).
The
second
one,
iteratively
applies
the
algorithm
three
times,
selecting
the
proper
weights
for
the
time
computed
in
the
previous
iteration.
As
the
algorithm
is
affected
by
the
difference
between
the
expected
and
the
received
time
of
the
pulse,
the
relative
energy
difference
shows
a
parabolic
deviation
as
a
function
of
the
reconstructed
time,
which
can
be
corrected
offline.
Phase
corrected
online
energy
shows
relative
differences
smaller
than
10%
for
low
energy
region
and
1-‐2%
for
higher
energy
deposits.
Finally,
time
calibration
is
assessed
by
means
of
physics
quantities,
where
a
technique
to
evaluate
out
of
time
cells
from
jets
that
pass
quality
cuts
and
have
an
associated
track
is
described.
Cells
that
contribute
to
out
of
time
deposits
are
identified
and
their
expected
time
of
the
signal
is
corrected.
Time
based
cuts
may
be
used
to
develop
algorithms
to
search
for
the
Higgs
boson.
One
of
the
most
interesting
channels
for
the
search
for
Higgs
bosons
is
the
tau
pair
decay
channel
within
the
MSSM,
where
the
production
cross
section
is
enhanced
by
a
factor
tan2β
with
respect
to
the
Standard
Model.
The
semi-‐leptonic
decay
channel
has
been
explored
where
the
tau
that
decays
leptonically
is
identified
by
the
final
lepton,
and
the
tau
that
decays
hadronically
is
identified
by
the
tau
reconstruction
algorithm.
The
event
selection
criteria
incorporates
a
cut
on
the
transverse
mass
plane
of
the
lepton
plus
missing
ET
system
versus
the
hadron
plus
missing
ET
system
that
allows
strong
rejection
of
W+jets
background.
Visible
mass
is
introduced
to
increase
the
statistics
in
the
observables,
as
opposed
to
the
invariant
mass
approximation
through
means
of
the
collinear
approximation
for
which
back-‐to-‐
back
events
have
to
be
removed.
Bayesian
statistics
are
used
where
the
posterior
probability
is
obtained
through
the
profiling
technique.
Incorporation
of
energy
scale
uncertainties
is
done
through
means
of
the
template
morphing
technique
developed
at
CDF.
Nuisance
parameters
describe
normalization
errors
and
morphing
intensities
as
Gaussian
PDFs.
Simulation
studies
are
conducted
at
√s
=
14
TeV
to
compute
exclusion
limits
and
discovery
significances
for
neutral
MSSM
Higgs
bosons
decaying
to
tau
pairs.
Expected
results
are
very
promising
for
ATLAS
already
at
1
fb-‐1
where
the
Higgs
could
be
excluded
as
low
as
tan2β
=
10
or
claimed
for
discovery
at
tan2β
=
15
for
mA
=
150
GeV.
Also
expected
results
for
10
and
30
fb-‐1
have
been
computed
although
the
cuts
have
been
optimized
for
1
fb-‐1
and
no
b-‐tagging.El detector ATLAS del LHC en el CERN ha empezado a operar en 2009. Para ello ha hecho uso del sistema de Trigger y Adquisición de Datos de ATLAS, conocido como TDAQ. Como parte del mismo, se encuentra el ROD Crate DAQ que tiene como objetivo el control del hardware específico de los sub-‐detectores, donde se encuentra el caso del ROD del Calorímetro Hadrónico TileCal. Este dispositivo es responsable del cálculo de la energía depositada en las celdas del calorímetro. Así como del cálculo de la fase a la que se ha depositado la señal. Un estudio de las fases depositadas en el calorímetro puede permitir el desarrollo de algoritmos de selección de eventos para la búsqueda del Bosón de Higgs. Uno de los canales más interesantes para esta búsqueda se encuentra en el modelo MSSM. En este modelo, la sección eficaz de producción de Higgs se encuentra favorecida cuadráticamente por un factor propio del modelo, tangente de beta, con respecto al modelo estándar. Es posible hacer una búsqueda del Bosón de Higgs estableciendo un límite superior a su sección eficaz en caso de una no-‐ observación o estableciendo la significancia estadística en caso de un posible exceso en las observaciones. Se describe la implementación el software necesario para la integración de los RODs del Calorímetro Hadrónico TileCal dentro del TDAQ de ATLAS. Esto supone en primer lugar la descripción del hardware y software específico de TileCal en la base de datos de configuración. En segundo lugar, la implementación de varios plugins para el ROD Crate DAQ. Destacan el plugin del ROD y del TBM. Se presentan los resultados de rendimiento y tiempo de reacción. Finalmente se muestran los resultados de las tareas de validación del algoritmo de Optimal Filtering y puesta a punto del timing de los canales del TileCal. Se ha importado a ATLAS la técnica bayesiana desarrollada en CDF para establecer límites superiores a la sección eficaz de producción del bosón de Higgs y la significancia de una posible observación. Este método tiene en cuenta errores sistemáticos que describen nuestro conocimiento sobre parámetros físicos como la luminosidad y la sección eficaz de los procesos de fondo que modifican la normalización de las distribuciones, además de otras medidas como la precisión en la determinación de la escala electromagnética o la incertidumbre en la calibración de la energía de los jets que modifican la forma de las distribuciones. Se presentan resultados esperados para los límites de exclusión y significancias de descubrimiento para Bosones de Higgs neutros decayendo a pares de taus. Estos resultados esperados son muy prometedores para ATLAS durante los primeros dos años de toma de datos.
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Ferreiro, Iachellini Nahuel [Verfasser], and Otmar [Akademischer Betreuer] Biebel. "Increasing the sensitivity to low mass dark matter in CRESST-III with a new DAQ and signal processing / Nahuel Ferreiro Iachellini ; Betreuer: Otmar Biebel." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2019. http://d-nb.info/1180981863/34.
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Романовський, Володимир Ігоревич, Владимир Игоревич Романовский, Volodymyr Ihorevych Romanovskyi, Дмитро Миколайович Макуха, Дмитрий Николаевич Макуха, Dmytro Mykolaiovych Makukha, and О. І. Березка. "Моделювання нелінійних режимів роботи електричних мереж за допомогою програмного комплексу MathCad та комплексу LabView на основі системи збору даних National Instrument DAQ з інтерфейсом USB." Thesis, Сумський державний університет, 2015. http://essuir.sumdu.edu.ua/handle/123456789/41393.
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Збільшення рівня електромагнітних впливів в електричних мережах є результатом зростання нелінійних, несиметричних та швидкозмінних навантажень на промислових підприємствах країни. Впливи негативно впливають як на силові електроустановки споживачів, на системи автоматики та релейного захисту, так і на самі електричні мережі.
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Waal, Steven. "A Quantitative Approach for Tuning a Mountain Bike Suspension." DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2246.
Full textAbstract:
A method for tuning the spring rate and damping rate of a mountain bike suspension based on a data-driven procedure is presented. The design and development of a custom data acquisition system, known as the MTB~DAQ, capable of measuring acceleration data at the front and rear axles of a bike are discussed. These data are input into a model that is used to calculate the vertical acceleration and pitching angular acceleration response of the bike and rider. All geometric and dynamic properties of the bike and rider system are measured and built into the model. The model is tested and validated using image processing techniques. A genetic algorithm is implemented with the model and used to calculate the best spring rate and damping rate of the mountain bike suspension such that the vertical and pitching accelerations of the bike and rider are minimized for a given trail. Testing is done on a variety of different courses and the performance of the bike when tuned to the results of the genetic algorithm is discussed. While more fine tuning of the model is possible, the results show that the genetic algorithm and model accurately predict the best suspension settings for each course necessary to minimize the vertical and pitching accelerations of the bike and rider.
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LIU, Guoming. "Management, Optimization and Evolution of the LHCb Online Network." Doctoral thesis, Università degli studi di Ferrara, 2010. http://hdl.handle.net/11392/2389315.
Full textAbstract:
The LHCb experiment is one of the four large particle detectors running at the
Large Hadron Collider (LHC) at CERN. It is a forward single-arm spectrometer dedicated to test the Standard Model through precision measurements of
Charge-Parity (CP) violation and rare decays in the b quark sector. The LHCb
experiment will operate at a luminosity of 2x10^32cm-2s-1, the proton-proton
bunch crossings rate will be approximately 10 MHz. To select the interesting
events, a two-level trigger scheme is applied: the rst level trigger (L0) and the
high level trigger (HLT). The L0 trigger is implemented in custom hardware,
while HLT is implemented in software runs on the CPUs of the Event Filter
Farm (EFF). The L0 trigger rate is dened at about 1 MHz, and the event size
for each event is about 35 kByte. It is a serious challenge to handle the resulting
data rate (35 GByte/s).
The Online system is a key part of the LHCb experiment, providing all the
IT services. It consists of three major components: the Data Acquisition (DAQ)
system, the Timing and Fast Control (TFC) system and the Experiment Control
System (ECS). To provide the services, two large dedicated networks based on
Gigabit Ethernet are deployed: one for DAQ and another one for ECS, which are
referred to Online network in general. A large network needs sophisticated monitoring for its successful operation. Commercial network management systems are
quite expensive and dicult to integrate into the LHCb ECS. A custom network
monitoring system has been implemented based on a Supervisory Control And
Data Acquisition (SCADA) system called PVSS which is used by LHCb ECS. It
is a homogeneous part of the LHCb ECS. In this thesis, it is demonstrated how
a large scale network can be monitored and managed using tools originally made
for industrial supervisory control.
The thesis is organized as the follows:
Chapter 1 gives a brief introduction to LHC and the B physics on LHC,
then describes all sub-detectors and the trigger and DAQ system of LHCb from
structure to performance.
Chapter 2 first introduces the LHCb Online system and the dataflow, then
focuses on the Online network design and its optimization.
In Chapter 3, the SCADA system PVSS is introduced briefly,
then the
architecture and implementation of the network monitoring system are described
in detail, including the front-end processes, the data communication and the
supervisory layer.
Chapter 4 first discusses the packet sampling theory and one of the packet
sampling mechanisms: sFlow, then demonstrates the applications of sFlow for
the network trouble-shooting, the traffic monitoring and the anomaly detection.
In Chapter 5, the upgrade of LHC and LHCb is introduced, the possible
architecture of DAQ is discussed, and two candidate internetworking technologies (high speed Ethernet and InfniBand) are compared in different aspects for
DAQ. Three schemes based on 10 Gigabit Ethernet are presented and studied.
Chapter 6 is a general summary of the thesis.
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Schindler, Stefan [Verfasser]. "An improved signal model for a dual-phase xenon TPC using Bayesian inference and studies on the software trigger efficiency of the XENON1T DAQ system / Stefan Schindler." Mainz : Universitätsbibliothek der Johannes Gutenberg-Universität Mainz, 2021. http://d-nb.info/1227048599/34.
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Persson, Christofer. "Moderniserat styrprogram för vakuumugn." Thesis, Mittuniversitetet, Avdelningen för informations- och kommunikationssystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-26132.
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The aim of this project is to create a modern and advanced program for controlling a vacuum furnace used for brazing plate heat exchangers and which includes functions for remote monitoring. A DAQ-unit (Data Acquisition) made by National Instruments connects with an already existing vacuum furnace to send control signals and receive measurements. There is already a control program available for the vacuum furnace but it has a number of shortcomings which the new program is intended to solve. A PID controller is implemented to control the temperature of the furnace. Temperature control is of utmost importance to get the brazing process as stable as possible. Therefore, a simulator has been developed that simulates the entire brazing process. The simulator serves as a tool to optimize values of the constants included in the PID control algorithm. Everything is written in the C# programming language. The braze process has from a code stand point been divided into five phases; lowering pressure, heating, brazing, cooling and finish. A comparison between the new and the old control software shows that heating process is much faster now and that when the correct temperature level has been reached, the temperature variation is considerably lower than before. The entire soldering process is shortened by almost two hours. Temperature control is more efficient and stable than before because of the constants calculated using the simulator and that a PID controller is used instead of a PD controller. New technology is implemented so that a much larger number of samples are obtained. Functions for user access to the history of previous brazing processes has been developed and an interface to easily adjust settings is implemented. Even a web interface for remote monitoring has been created.
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Leonard, Alexandre. "Measurement of Z boson production in association with jets at the LHC and study of a DAQ system for the Triple-GEM detector in view of the CMS upgrade." Doctoral thesis, Universite Libre de Bruxelles, 2015. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209059.
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This PhD thesis presents the measurement of the differential cross section for the production of a Z boson in association with jets in proton-proton collisions taking place at the Large Hadron Collider (LHC) at CERN, at a centre-of-mass energy of 8 TeV. A development of a data acquisition (DAQ) system for the Triple-Gas Electron Multiplier (GEM) detector in view of the Compact Muon Solenoid (CMS) detector upgrade is also presented.The events used for the data analysis were collected by the CMS detector during the year 2012 and constitute a sample of 19:6 fb-&
Doctorat en Sciences
info:eu-repo/semantics/nonPublished
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Forsling, Ekblom Albin, and Rickard Ohlén. "Balkböjning och signalbehandling." Thesis, KTH, Hållbar produktionsutveckling (ML), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-299794.
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I laborationssalarna på KTH i Södertälje, som i huvudsak används till elektrorelaterade ämnen, har det funnits ett antal balkmodeller med monterade töjningsgivare. Dessa har inte använts på många år och det saknas vidare uppgifter om modellerna. Uppdraget bestod av att utarbeta en laboration till KTH:s undervisning. Laborationen skulle handla om balkböjning och signalbehandling, med tonvikt på̊ det senare. Som hjälpmedel skulle vi använda oss av balkmodellerna. I uppdraget ingick det också att undersöka balkmodellernas elektriska och mekaniska egenskaper. Med teknisk balkteori skulle en möjlig relation mellan nedböjning och töjning tas fram. Med balkmodellen i en bryggkoppling kunde dess signal via ett DAQ-kort överföras till en PC och LabVIEW för vidare behandling. I LabVIEW kan ett anpassat gränssnitt tas fram och för visning av valda parametrar. Bryggkopplingen balanseras med hjälp av en potentiometer. I gränssnittet kan spänningsförändringen i bryggan observeras när balken påverkas av nedböjning. Efter kalibrering av systemet kan töjning och nedböjning presenteras efter beräkningar i LabVIEW. För att erhålla en så stabil och brusfri signal som möjligt har gruppen använt sig avbåde ett hårdvarufilter av lågpass-typ och ett mjukvarufilter i LabVIEW. Signalen förstärks med hjälp av en OP-förstärkare innan den matas in i DAQ-kortet. Trots sin ålder kunde balkmodellerna fortfarande användas och ge stabila signaler för vidarebehandling. Modellerna kan med fördel användas i en laboration för studenter och färdigt underlag finns för detta. Laborationen bör öka förståelsen för hur en signal från en givare kan förstärkas, filtreras och behandlas vidare i detta fall för grundläggande hållfasthetsberäkningar.In the laboratory at KTH in Södertälje, which are mainly used for electro-related subjects, there are a number of beam models with mounted strain gauges. These have not been used for many years and there is no further information about the models. The assignment consisted of preparing a laboratory task for KTH's teaching. The laboratory would consist of beam bending and signal processing, with emphasis on the latter. As an aid, the beam models will be used, these consisted of a fixed aluminum beam with mounted strain gauges. The assignment also includes examining the electrical and mechanical properties of the beam models. With technical beam theory, a possible relationship between deflection and strain would be developed. With the beam model connected in a bridge connection, its signal could be transferred via a DAQ card to a PC and LabVIEW for further processing. In LabVIEW, a custom interface can be created and for displaying selected parameters. The bridge coupling is balanced with the help of a potentiometer. In the interface, the voltage change in the bridge can be observed when the beam is affected by deflection. After calibration of the system in the interface, strain and deflection can be presented according to calculations in LabVIEW. To obtain as stable and noise-free a signal as possible, the group has used both a low-pass hardware filter and a LabVIEW software filter. The signal is amplified by an OP amplifier before being fed into the DAQ card. Despite their age, the beam models could still be used and give stable signals for further treatment. The models can be used to advantage in a laboratory for students and there is a ready basis for this. The laboratory should increase the understanding of how a signal from a sensor can be amplified, filtered and further processed in this case for basic strength calculations.
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Toschi, Francesco. "Elaborazione di un programma di acquisizioni dati e studio di fotomoltiplicatori al silicio per l'esperimento XENON." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/9130/.
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Le numerose osservazioni compiute a partire dagli anni `30 confermano che circa il 26% dell'Universo è costituito da materia oscura. Tale materia ha la particolarità di interagire solo gravitazionalmente e debolmente: essa si presenta massiva e neutra. Tra le numerose ipotesi avanzate riguardanti la natura della materia oscura una delle più accreditate è quella delle WIMP (Weakly Interacting Massive Particle).
Il progetto all'avanguardia nella ricerca diretta delle WIMP è XENON presso i Laboratori Nazionali del Gran Sasso (LNGS). Tale esperimento è basato sulla diffusione elastica delle particelle ricercate su nuclei di Xeno: il rivelatore utilizzato è una TPC a doppia fase (liquido-gas). La rivelazione diretta di materia oscura prevede l'impiego di un rivelatore molto grande a causa della piccola probabilità di interazione e di ambienti a bassa radioattività naturale, per ridurre al minimo il rumore di fondo.
Nell'ottica di migliorare la sensibilità del rivelatore diminuendo l'energia di soglia sono in fase di ricerca e sviluppo soluzioni alternative a quelle adottate attualmente. Una di tali soluzioni prevede l'utilizzo di fotorivelatori di tipo SiPM da affiancare ai normali PMT in uso. I fotorivelatori al silicio devono lavorare ad una temperatura di (circa 170 K) e devono rivelare fotoni di lunghezza d'onda di circa 175 nm.
Il presente lavoro di tesi si colloca nell'ambito di tale progetto di ricerca e sviluppo. Lo scopo di tale lavoro è stato la scrittura di un programma DAQ in ambiente LabVIEW per acquisire dati per caratterizzare in aria fotorivelatori di tipo SiPM. In seguito con tale programma sono state effettuate misure preliminari di pedestallo da cui è stato possibile determinare l'andamento di guadagno e di dark rate al variare della tensione di alimentazione del SiPM. L'analisi dati è stata effettuata impiegando un programma scritto in C++ in grado di analizzare le forme d'onda acquisite dal programma LabVIEW.
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Casanaba, Pablo. "Development of a Simple and Cheap Equipment for monitoring the solar Irradiance on PV modules." Thesis, Högskolan i Gävle, Energisystem och byggnadsteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-30216.
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Increased use of renewable energies that is taking place all over the world is having a very important impact on the photovoltaic solar energy industry. This means of obtaining electrical energy is one of the most promising ones nowadays, thanks to the fact that it is a technology of easy installation and maintenance. However, the number of hours that a photovoltaic system works at maximum power depends almost entirely on environmental conditions, mainly in terms of solar irradiance.Solar irradiance is a magnitude that measures the power released by sunlight per unit area; the higher it is, the more power the photovoltaic system will generate.Therefore, it is very important to measure this magnitude in order to obtain data that either can give information about which is the best place to install a photovoltaic system or expect the device performance.Unfortunately, sensors used nowadays to measure this magnitude are quite expensive. The most widely used are the so-called pyranometers, with an average cost of between 8000 SEK to 10000 SEK, and solar reference cells, which can be quite cheaper (1000 SEK), but also can be the most expensive devices on the market depending on the features they have (some reference cells cost 20000 SEK).In this thesis, a solar irradiance sensor based on the treatment of a current generated by a silicon photodiode has been designed, built and calibrated. The signal generated by the device is a voltage that has been obtained by means of a current-to-voltage converter amplifier stage. Once the construction of the circuit was completed, it was tested on the roof of Hall 45 located in the University of Gävle. The testing was carried out on 13, 14 and 15 May 2019, and it consisted in the comparison of the signal generated by the new device and the signals generated by a pyranometer and a solar cell.The result is a device priced at 200 SEK, which shows acceptable levels of accuracy during central daylight hours but shows a strong angular dependence on incident light during sunrise and sunset.
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Janoušek, Roman. "Návrh software jednoúčelového stroje pro výrobní testy." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232098.
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This diploma thesis deals with design and implementation of software for control of manufacturing tests of pneumatic proportional valve Festo MPYE. The single-purpose testing device consists of a DAQ device, a pressure sensor and of electrically operated pneumatic valves. In the introduction of this thesis are outlined aims of thesis followed by introduction to single-purpose assemblies commonly used in practice. The main part of this thesis deals with analysis and with solving the issues of assigned product testing. The designed and implemented modular software for control of manufacturing tests of assigned product is presented as an outcome and this software is easily adjustable for tests of a different product. In the conclusion are assessed achieved aims.
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SHINDE, VISHAL. "DEVELOPMENT OF A DATA ACQUISITION SYSTEM AND PIEZOELECTRIC SENSORS FOR AN EXPERIMENTAL STRUCTURAL NEURAL SYSTEM." University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1143842747.
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Salestedt, Morgan. "Prediktivt underhåll baserat på mätning av linjeström i pumpmotor : Digital modellering med MCSA samt implementering av iba datainsamlingssystem." Thesis, Högskolan i Gävle, Elektronik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-33178.
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Med övergången från Industri 3.0 till Industri 4.0 kommer stora krav på utvecklingen av Prediktiva Underhållsmetoder (PU) för att skona både miljö och ekonomi från påfrestande haverier. I detta projekt utfördes en installation av ett iba datainsamlingssystem, som är ett bra exempel på utvecklingen mot Industri 4.0. Vidare togs en prediktiv modell som skattar återstående livslängd med metoden Motor Current Signature Analysis (MCSA), som baseras på linjeströmsmätning, fram i projektet. Metoden analyserade strömmen från två olika induktionsmotorer för kylvattenpumpar där det var en ny pump och en sliten pump. Induktionsmotorer används inte enbart i kylvattentillämpningar utan integreras frekvent i kommersiellt tillgänglig utrustning, så den prediktiva modellen har ett expanderbart användningsområde. Två tillvägagångssätt testades för att hitta signaturer i linjeströmmen. Först testades spektrum-analys med 10Hz och 1000Hz som samplingsfrekvenser med slutsatsen att högre samplingsfrekvens troligen behövs för ett trovärdigt resultat. Sedan testades Analys av signalegenskaper med ANOVA som gav en klar signatur för toppvärden i ström med slutsatsen att skillnaden i ström mellan ny och sliten pump var tydlig men kunde vara av installationstekniska skäl. En förenklad skattning av Remaining Useful Life (RUL) med tillhörande rekommendation av underhållsinsats togs fram för att visualisera resultatet. Rekommenderat fortsatt arbete med modellen var klassificeringsalgoritmer, anpassad datainsamlingsutrustning och förlängd datainsamlingsperiod.With the transition from Industry 3.0 to Industry 4.0 follows great demands on the development of predictive maintenance (PU) in order to spare both the economy and the climate from costly breakdowns. An installation of a iba data acquisition system was applied in this project, which is a good example on the advances made through Industry 4.0. The project shows the development of a predictive model, which estimates the remaining life with the method motor current signature analysis (MCSA) that is based on phase current. Data was collected on two different induction motors for cooling water pumps, one new and one worn out pump. Induction motors are not only used in cooling water applications but are frequently applied in commercially available equipment, thus the method has a expandable use. Two methods were tested for finding signatures in the phase current. First, spectrum analysis with 10 and 1000Hz as sampling frequencies with the conclusion that a higher sampling frequency likely is needed for a reliable result. Secondly an analysis of signal properties with ANOVA was preformed. This gave a clear signature for peak values in the current with the conclusion that the difference between new and worn out pump was clear but could be the result of installation related issues. A simplified version of remaining useful life (RUL) with related maintenance procedure was developed to visualize the result. For continued work with this model it is recommended to develop classification algorithms, improve the data acquisition equipment and prolong the data acquisition period.
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Mosconi, Enrico. "Sviluppo di una piattaforma per il monitoraggio remoto di dispensatori di bevande." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.
Find full textAbstract:
La tesi ha come obiettivo principale lo sviluppo hardware e software di una piattaforma di monitoraggio per dispensatori di bevande.
Questo tipo di progetto si colloca nel mondo dei dispositivi IoT che sono caratterizzati dalla presenza di connessione internet e dall'ingente scambio di dati.
Nell'elaborato sono descritti i passi progettuali in maniera dettagliata che mi hanno condotto alla realizzazione di due differenti prototipi: il primo, utile per validare i sistemi di acquisizione e di invio dati; il secondo, sviluppato con lo scopo di eliminare le schede di sviluppo utilizzate nella prima revisione e ridurre costi ed ingombri.
Dopo la descrizione delle parti hardware ho proceduto alla descrizione del firmware che controlla tutte le parti della scheda, ponendo particolare attenzione sulle parti più importanti del sistema.
Al termine dell'elaborato viene fatto un breve resoconto dei risultati ottenuti e dei probabili sviluppi futuri che il progetto prevede di affrontare.
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Wegener, Heide. "Komplexität oder Kontrastivität der L2 : Worin liegt das Problem für DaZ/DaF?" Universität Potsdam, 2005. http://opus.kobv.de/ubp/volltexte/2006/738/.
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Russ, David. "Metody analýzy vibračních signálů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-241992.
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The main target of this master’s thesis is to focus on methods of analysis of vibration signals in electric machines. To get know the basic principles of the diagnostics methods, is important to clarify origin of the vibration signals and the impact they have. The selected methods were tested practically by measurement on electric machines. Measured data were processed in program LabVIEW. In this thesis were created programs which actually can be aplicated for complete vibrodiagnostics of electric machines in particular induction motors. The basic evaluation of vibration are the RMS value, Crest factor, time course and power spectrum. Results of this thesis are used to demonstrate how quickly and effectively can be vibration signals from electric machines evaluated.
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Halfar, Lukáš. "Automatizované měření asynchronního motoru pomocí LabVIEW." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-242151.
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The main purpose of the thesis Automatic measurement of induction machine using LabVIEW was to develope an automated measuring system, which is used to perform tests of induction motors. The algorithm of the system is programmed in LabVIEW. In the practical part of this thesis, a measurement of the motor Atas Elektromotory Náchod a.s. T22VT512 is carried out, in order to verificate functions of the algorithm, and to perform tests of the motor to analyse losses. Another part of the work is dedicated to the electromagnetic calculation of the motor T22VT512. For this purpose, two softwares with different principles of calculation have been used. Firstly, the calculation is solved by an analytical based software called RMxprt. Secondly, the software Maxwell 2D is used to make the calculation of electric and magnetic fields by the finite element method.
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Hosseininejad, Justin. "Design and Implementation of a Custom Force Pole Assembly for the Measurement of Primate Locomotor Kinetics." Youngstown State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1377357570.
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Day, Toby Richard. "Intermountain West native and adapted grass species and their management for turfgrass applications." Thesis, Montana State University, 2006. http://etd.lib.montana.edu/etd/2006/day/DayT0806.pdf.
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Tankari, Dan-Badjo Abdourahamane Rychen Guido. "Modalités de contamination du ray-grass par les éléments du groupe platine et les hydrocarbures aromatiques polycycliques à proximité des voies routières." S. l. : S. n, 2007. http://www.scd.inpl-nancy.fr/theses/2007_TANKARI-DAN-BADJO_A.pdf.
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Verhagen, Erik. "Development of the new trigger and data acquisition system for the CMS forward muon spectrometer upgrade." Doctoral thesis, Universite Libre de Bruxelles, 2015. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209110.
Full textAbstract:
La physique des particules élémentaires, aussi appelé physique des hautes énergies, est l'étude de l'infiniment petit, popularisée récemment par la découverte de nouvelles particules fondamentales permettant de consolider notre connaissance de la matière. Pour réaliser des mesures à une échelle aussi réduite, une méthode consiste à augmenter l’énergie des constituants de la matière, à l'aide d'accélérateur de particules, puis de les briser pour révéler leur constitution. Au-delà de l'intérêt en termes de physique expérimentale, réaliser des expériences de ce type est devenu une prouesse technologique grandissante avec les niveaux d’énergie atteints. La complexité de l’expérience CMS, cadre dans laquelle ce travail a été réalisé, donne une bonne mesure des défis technologiques relevés.Afin d'affiner encore notre connaissance des processus mis en jeu lors collision de particules dans CMS, une mise à niveau du détecteur est prévue avant la fin de cette décennie. Certains sous-détecteurs actuellement installés, et notamment le spectromètre à muon dans la zone des bouchons, sont d’ores et déjà identifiés comme offrant des performances trop faibles pour l'augmentation du nombres d’événements prévu après cette mise à jour. Ce travail propose de réaliser une étude de faisabilité sur l'utilisation d'une technologie alternative pour ce sous-détecteur, notamment le Triple-GEM, pour combler ces limitations.
Une première partie de ce travail consiste en l'étude de cette nouvelle technologie de détecteur à gaz. Cependant, la mise en œuvre de cette technologie conduit à des modifications dans le système d'acquisition de données de CMS. La situation actuelle puis les implications d'un point de vue technique des modifications sont donc détaillées par la suite. Enfin, après avoir identifié les composants et les solutions permettant la collecte de résultats à l’échelle de l'ensemble du sous-détecteur, un système d'acquisition de données similaire a été réalisé et est décrit dans une dernière partie de ce travail.
Doctorat en Sciences
info:eu-repo/semantics/nonPublished