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Lien, Fredrik. "Modelling and Test Setup for Sandwich Radomes." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elektronikk og telekommunikasjon, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-26233.
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Sandwich radomes are structures providing communication- and radar antennas with protection from the environment. The sandwich materials are designed to affect the electromagnetic radiation as little as possible with respect to transmission- and reflection loss, boresight error, boresight error slope, increased sidelobe levels and depolarization. In order to match the frequency response of the radome material to the specifications, simulation and optimization of the thickness and dielectric properties of the individual sandwich layers is done.To simulate the transmission- and reflection coefficients for sandwich materials a Matlab scripts has been developed. The script calculate the response for up to 10 different layers for incidence angles and frequencies defined by the user. Verification of the results has been done by comparing the simulated data to results in Kozakoff (2010) and show that the script works correctly.Waveguide measurement and calibration components have been designed and manufacturedin order to measure samples of dielectric materials and samples of complete radome sandwich materials. The results have been compared to results from simulations done in CST Microwave Studio and show a good match for complete sandwich materials and thicker dielectrics. However the measurement results for thin material samples show more deviation compared to the simulation results. The deviation seems to be dependent on the thickness of the sample.Two optimization routines have been developed in Matlab. The first compare the measuredresults from measurements to the simulated results from Matlab. Least square optimization is used to adjust the dielectric properties (relative permittivity and dielectric loss tangent) used by the simulation script in order to match the simulation values to the measured values. The results show good match of the optimized relative permittivity for a 22 mm thick sample of Teflon with the optimized value deviating 1.3% from the specified permittivity value. With decreasing thickness of the test samples the deviation increased to approximately 3-12%. The optimized loss tangent values however show very large deviation from the specified values and should be treated as invalid. The main reasons are believed to be the low loss of the materials combined with the thickness relative to the measurement wavelength.The second optimization routine adjust the thickness of the individual layers to achieveminimum loss for one- or more predefined frequency bands. The results show that theoptimization work as intended. To investigate the effect of production errors/productiontolerances the core thickness of an A-sandwich has been adjusted with +/-10% from theoptimized thickness. The result show that the thickness deviation has a bigger impact onhigh frequencies.
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Spedicato, Eugenia. "Fast simulation of the MUonE 2021 test run setup." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/23207/.
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This thesis contributes to the study of the electromagnetic calorimeter performances and to the clarification of its role in the selection of mu-e elastic scattering events for the MUonE experiment.Together with the tracking system, the calorimeter constitutes the prototype detector for 2021 the Test Run(TR).One of the main proposals of this thesis is the development of the fast simulation for the calorimeter response, in the working condition expected in the TR.Given a generated set of NLO events, consisting in high energy muons scattering on electrons at rest with prefixed kinematical conditions, it has been developed the procedure which generalizes kinematical scattering conditions considering the kinematical properties of the beam:its angular divergence and its spatial profile (beam spot).NLO events include the case of one real photon radiation.It has been simulated the propagation of particles across light targets and tracking stations, considering the deflection given by MCS, until particles have reached the calorimeter face. Its response has been simulated by means of a fast simulation that has been developed relying on an existing parametrization(GFLASH) also used by CMS.The simulation code has been validated successfully, comparing the results with the expected ones, published by the authors of the model.Thus, it has been studied the distribution of the energy released by particles in the calorimeter cells.The two simulation codes (for the propagation and for the calorimeter response) were unified in a single algorithm,through which a complete study of the events topology expected in the TR was carried out. This tool enabled to identify selection criteria for elastic events within the full NLO set.Three different criteria were proposed which seem to identify efficiently the interesting events. Selections are mainly based on calorimetric information.The thesis clarifies, at least in part, the precious role that this detector may have in the final experiment.
3
Dolo, Samuel L. "A nonparametric test for scale in univariate population setup /." Full text available from ProQuest UM Digital Dissertations, 2006. http://0-proquest.umi.com.umiss.lib.olemiss.edu/pqdweb?index=1&did=1410676431&SrchMode=1&sid=1&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1218560580&clientId=22256.
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Zenteno, Efrain. "MEASUREMENTS OF SCATTERING PARAMETERSUSING A TIME DOMAIN TEST SETUP." Thesis, Högskolan i Gävle, Ämnesavdelningen för elektronik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-7448.
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From its beginning, scattering parameters are one of the most important milestones in radio frequency analysis and device characterization, even though some other instruments are capable of performing such measurements, the task has been almost entirely left to Vector Network Analyzer (VNA). The purpose of this work is to emulate VNA functionality for forward measurements (S11 and S21), being able to expand its actual capabilities, using a time domain setup with equipment already available in radio stations, where a personal computer will act as a main processor and interface to the user. Hardware setup proposed in this investigation is explained in detail, analyzing its advantages and drawbacks; this as well as software methodology in order to mimic VNA functionality, including error vector correction provided by a suitable calibration procedure. Results were compared to those obtained in previous research as well as industrial and well calibrated VNA, showing very good agreement in both cases, where the interpretation of the results is based on repeatability and accuracy analysis.
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Mishra, Shashank. "Analysis of test coverage metrics in a business critical setup." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-213698.
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Test coverage is an important parameter of analyzing how well the product is being tested in any domain within the IT industry. Unit testing is one of the important processes that have gained even more popularity with the rise in Test driven development (TDD) culture.This degree project, conducted at NASDAQ Technology AB, analyzes the existing unit tests in one of the products, and compares various coverage models in terms of quality. Further, the study examines the factors that affect code coverage, presents the best practices for unit testing, and a proven test process used in a real world project.To conclude, recommendations are given to NASDAQ based on the findings of this study and industry standards.Testtäckning är en viktig parameter för att analysera hur väl en produkt är testad inom alla domäner i IT-industrin. Enhetstestning är en av de viktiga processerna som har ökat sin popularitet med testdriven utveckling. Detta examensarbete, utfört på NASDAQ Technology AB, analyserar de befintliga testen i en av produkterna, och jämför olika kvalitetsmodeller. Vidare undersöker undersökningen de faktorer som påverkar koddekning, presenterar de bästa metoderna för enhetstestning och en beprövad testprocess som används i ett verkligt världsprojekt. Avslutningsvis ges rekommendationer till NASDAQ baserat på resultaten från denna studie och industristandarder.
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Bhonsle, Dhruvjit Vilas. "Development of an Automation Test Setup for Navigation Data Processing." Master's thesis, Universitätsbibliothek Chemnitz, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-199331.
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With the development of Advanced Driving Assistance Systems (ADAS) vehicles have undergone better experience in field of safety, better driving and enhanced vehicle systems. Today these systems are one of the fastest growing in automotive domain. Physical parameters like map data, vehicle position and speed are crucial for the advancement of functionalities implemented for ADAS.
All the navigation map databases are stored in proprietary format. So for the ADAS application to access this data an appropriate interface has to be defined. This is the main aim of Advance Driver Assistant Systems Interface Specifications (ADASIS) consortium. This new specification allows a coordinated effort of more than one industry to improve comfort and fuel efficiency.
My research during the entire duration of my master thesis mainly focuses on two stages namely XML Comparator and CAN stream generation stages from ADASIS Test Environment that was developed in our company. In this test environment ADASIS Reconstructor of our company is tested against the parameters of Reference Reconstructor provided by ADASIS consortium. The main aim of this environment is to develop a Reconstructor which will adhere to all the specifications given in ADASIS Reconstructor.
My implementation in this master thesis focuses on two stages of test environment setup which are XML Comparison and CAN Stream Generation Tool respectively. Prior to my working, these stages lacked in-depth research and usability features for further working.
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Drerup, Klaus. "Setup and test of a WFS for NatureSDI+ according to INSPIRE." Thesis, Högskolan i Gävle, Institutionen för teknik och byggd miljö, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-7673.
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The INSPIRE initiative requires that every European member state establishes a national SDI and related web services. Among these a WFS must be implemented to query spatial data. Therefore several Quality of Service specifications must be fullled by this web service, among these are performance, capacity and availability. In this study work a WFS will be implemented for Nature SDI plus. In this European project the WFS will provide spatial data from several data specications of ANNEX I and III. The main object is to test the conformance to the INSPIRE specification. Therefore load and performance tests will be performed.
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Sweeney, Katelyn (Katelyn M. ). "Development of a gear shift test setup for hybrid transmission vehicles." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/119935.
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Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2018.Cataloged from PDF version of thesis.
Includes bibliographical references (pages 39-40).
As fuel and efficiency regulations tighten, precise and highly efficient transmission systems are becoming necessities. Previous studies at the MIT Global Engineering and Research (GEAR) Laboratory demonstrated mathematically the ability to improve the shift event via Hall Effect sensing; this study sought to implement those results in practice. To accomplish this, measurements of the physical gearsets, motors, and actuators were implemented into Computer Aided Design (CAD) software in order to design mounts and fixtures. Those mounts and fixtures were then manufactured and implemented into the real setup. In addition, brushless DC motors were utilized and tailored to drive the transmission. The end result was both CAD and physical assemblies that are simple, easy to assemble, and precise to the specifications of the experiment. From this study a proof-of-concept was built, showing that it is indeed possible spatially and physically to build an effective test setup that can support the theoretical needs of the experiment.
by Katelyn Sweeney.
S.B.
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Ekström, Per, and Elisabeth Eriksson. "REDUNDANT FIRMWARE TEST SETUP IN SIMULATION AND HARDWARE: A FEASIBILITY STUDY." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-40057.
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A reliable embedded real-time system has many requirements to fulfil. It must meet target deadlines in a number of situations, most of them in a situation that puts heavy stress on the system. To meet these demands, numerous tests have been created which test the hardware for any possible errors the developers might think of, in order to maximise system reliability and stability. These tests will take a lot of time to execute, and as system complexity grows, more tests are introduced leading to even longer testing times. In this thesis, a method to reduce the testing time of the software and, to a lesser extent, the hardware is examined. By using the full system simulator Simics, an existing industry system from ABB was integrated and tests were performed. A proof of concept test suite for automatic redundancy tests was also implemented. By looking at the test results, it was concluded that the method shows promise. However, problems with the average latency and performance troubles with Simics shows that more work must be put into this research before the system can be run at full speed.
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Chiacchiararelli, Leonardo. "Hardware-In-The Loop setup and test of an air spring control system." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/23779/.
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In this work, a Hardware-in-the-loop test bench is designed. The bench is used to test the behaviour of an electronic control unit used in Maserati to control the dynamics of an air spring system.
First the mathematical model of the plant has been defined, then the simulation enviroment and the test environment have been set up.
The performed tests succesfully highlighted some bugs in the device under test.
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Rank, Aaron. "A novel experimental approach using a reconfigurable test setup for complex nonlinear dynamic systems." Master's thesis, University of Central Florida, 2011. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5014.
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Experimental nonlinear dynamics is an important area of study in the modern engineering field, with engineering applications in structural dynamics, structural control, and structural health monitoring. As a result, the discipline has experienced a great influx of research efforts to develop a versatile and reliable experimental methodology. A technical challenge in many experimental studies is the procurement of a device that exhibits the desired nonlinear behavior. As a result, many researchers have longed for a versatile, but accurate, testing methodology that has complete freedom to simulate a wide range of nonlinearities and stochastic behaviors. The objective of this study is to develop a reconfigurable test setup as a tool to be used in a wide range of nonlinear dynamic studies. The main components include a moving mass whose restoring force can accurately be controlled and reprogrammed (with software) based upon measured displacement and velocity readings at each time step. The device offers control over nonlinear characteristics and the equation of dynamic motion. The advantage of having such an experimental setup is the ability to simulate various types of nonlinearities with the same test setup. As a result, the data collected can be used to help validate nonlinear modeling, system identification, and stochastic analysis studies. A physical test apparatus was developed, and various mechanical, electrical, and programming calibrations were performed for reliable experimental studies. To display potential uses for the reconfigurable approach, examples are presented where the device has been used to create physical data for use in change detection and deterioration studies. In addition, a demonstration is presented of the device's ability to physically simulate a large-scale orifice viscous damper, devices commonly used for vibration mitigation in bridges and buildings.; For a large-scale viscous damper, physical testing is required to ensure structural design properties. However, due to the large scale of the dampers, expensive dynamic loading tests can be carried out at a very limited number of facilities. Using the reconfigurable test setup, the dynamic signature of the large-scale viscous damper can accurately be simulated with pre-collected data. The development of a system capable of emulating the restoring force of a nonlinear device with software is a novel approach and requires further calibration for increased reliability and accuracy. A discussion regarding the challenges faced when developing the methodology is presented and possible solutions are recommended. The methodology introduced by this apparatus is very promising. The device is a valuable experimental tool for researchers and designers, allowing for physical data collection, modeling, analysis, and validation of a wide class of nonlinear phenomena that commonly occur in a wide variety of engineering applications.ID: 030423494; System requirements: World Wide Web browser and PDF reader.; Mode of access: World Wide Web.; Thesis (M.S.)--University of Central Florida, 2011.; Includes bibliographical references (p. 132-137).
M.S.
Masters
Civil, Environmental and Construction Engineering
Engineering and Computer Science
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Aasa, Amanda, and Amanda Svennblad. "Design of an Automated Test Setup for Power-Controlled Nerve Stimulator Using NFC for Implantable Sensors." Thesis, Linköpings universitet, Elektroniska Kretsar och System, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-176212.
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Electrical stimulation on nerves is a relatively new area of research and has been proved to speed up recoveryfrom nerve damage. In this work, the efficiency and stability of antennas integrated on printed circuit boards provided by the department of electrical engineering are examined. An automated test bench containing a stepmotor with a slider and an Arduino is created. Different setups were used when measuring on the boards, which resulted in that the largest antenna gave the most stable output despite the distance between transmitterand receiver. The conclusion was that the second best antenna and the smallest one would be suitable as well,and the better choice if it is to be implemented under the skin. A physical setup consisting of LEDs, an Arduino, a computer, and a function generator was created to examinethe voltage control functionality, where colored LEDs were lit depending on the voltage level. The functionality was then implemented in a circuit that in the future shall be integrated on the printed circuit board. To control high voltages a limiter circuit was examined and implemented. The circuit was simulated and tested, with a realization that a feature covering voltage enlargement is needed for the future.
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Henkel, Christian [Verfasser]. "Multipacting Electron Guns: Development and Results of a Test Setup for Experimental Characterisation Studies / Christian Henkel." Hamburg : Staats- und Universitätsbibliothek Hamburg Carl von Ossietzky, 2021. http://d-nb.info/1237817196/34.
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Bortolotti, Laura. "Test of multiple sensor set-up for head motion characterization during MRI acquisition." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/14564/.
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L'Imaging a Risonanza Magnetica (MRI) è una tecnica di imaging ampiamente utilizzata in ambito medico.
La ricerca in questo campo si sta focalizzando sullo sviluppo di scanner a campi molto intensi, come lo scanner a 7 T utilizzato in questa tesi. La risoluzione delle immagini e l'entità degli artefatti creati dai movimenti involontari del paziente sono proporzionali all'intensità di campo magnetico e diventano rilevanti ad intensità molto elevate. Le tecniche di Motion Correction, nota la cinetica dei movimenti, permettono di correggere queste distorsioni.
La tesi è inserita in un progetto che ha come scopo la misura indiretta dei movimenti della testa durante la scansione MRI. In particolare, mi sono concentrata sui miglioramenti da apportare al set-up e sulla caratterizzazione dei tre strumenti usati per la misura: la telecamera di campo magnetico (Clip on Camera Head, CCH) formata da 16 sonde fissate in una struttura cilindrica posizionata attorno alla testa del paziente; la telecamera ottica (Moiré Phase Tracking System, MPT) che misura i movimenti tramite l'immagine di un marker olografico supportato da un bite tenuto nella bocca del volontario; il dispositivo (Physlog) dello scanner che fornisce i parametri fisiologici (respirazione e battito cardiaco).
La comunicazione hardware degli strumenti avviene grazie a un segnale di trigger, di cui ho ottimizzato la sincronizzazione.
Inoltre, abbiamo acquisito dataset completi di tre volontari, a diverse condizioni. I dati sono stati sincronizzati e analizzati, tramite analisi multivariate, per caratterizzare la risposta e la stabilità del sistema e la variabilità individuale dei pazienti. L'analisi ha permesso di capire meglio le proprietà dello strumento e ha consentito di associare le misure del campo magnetico al di fuori del cranio ai valori fisiologici dei volontari.
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Kureksiz, Funda. "A Real Time Test Setup Design And Realization For Performance Verification Of Controller Designs For Unmanned Air Vehichles." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/2/12609393/index.pdf.
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In this thesis, a test platform based on real-time facilities and embedded software is designed to verify the performance of a controller model in real time. By the help of this platform, design errors can be detected earlier and possible problems can be solved cost-effectively without interrupting the development process.
An unmanned combat air vehicle (UCAV) model is taken as a plant model due to its importance in current and future military operations. Among several autopilot modes, the altitude hold mode is selected since it is an important pilot-relief mode and widely used in aviation. A discrete PID controller is designed in MATLAB/Simulink environment for using in verification studies. To control the dynamic system in wide range, a gain scheduling is employed where the altitude and velocity are taken as scheduling variables. Codes for plant and controller model are obtained by using real time workshop embedded coder (RTWEC) and downloaded to two separate computers, in which xPC kernel and VxWorks operating system are run, respectively.
A set of flight test scenarios are generated in Simulink environment. They are analyzed, discussed, and then some of them are picked up to verify the platform. These test scenarios are run in the setup and their results are compared with the ones obtained in Simulink environment.
The reusability of the platform is verified by using a commercial aircraft, Boeing 747, and its controller models. The test results obtained in the setup and in Simulink environment are presented and discussed.
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shahen, mohamed. "Development of a Nakajima test and its potential variants setup on thin flexible LDPE film and Aluminum foil." Thesis, Blekinge Tekniska Högskola, Institutionen för maskinteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-19007.
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The thesis aimed to identify fracture strain for multiaxial loading for laminate material of Al and LDPE that is mostly used in the food packing technology specially in liquid packaging industry. These materials are thin and flexible which make it difficult to handle and test it. The investigation was through applying new Nakajima test setup on such a material by designing a custom setup and 3D printing the Nakajima setup prototype to be able to use it in this study. DIC technique was used to get the results from the Nakajima test and the software used to apply the DIC technique is GOM correlate. As a validation for measurement from such a technique, a tensile test has been done and measured strains were compared with those from the specimen from the Nakajima that has smallest width as it was close to a uniaxial loading. One more validation technique was by creating a FE-model using (Abaqus software) for the biaxial loading and comparing it to the biaxial loading results that obtained from the DIC analysis.
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Bartolini, Chiara. "Test in criogenia con SiPM per futuri esperimenti con neutrini." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/17674/.
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Il neutrino è la particella più elusiva che conosciamo. Tutt'oggi non abbiamo una descrizione completa delle sue proprietà e caratteristiche, in particolare rimangono ancora senza risposta diversi quesiti riguardanti le oscillazioni del neutrino, la violazione CP nel settore leptonico e la gerarchia di massa. Il progetto DUNE, in America, avrà lo scopo di ampliare le nostre conoscenze sui processi che coinvolgono queste particelle.
Nell'attività di laboratorio è stato realizzato un setup sperimentale per eseguire misure in azoto liquido e sono stati caratterizzati diversi fotomoltiplicatori al Silicio, a temperatura ambiente e in criogenia, in modo tale da identificare le criticità dei dispositivi e dell'allestimento.
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Sutcu, Sinan Mahmut. "The effects of ITO surface modification on lifetime in organic photovoltaic devices and a test setup for measuring lifetime." Thesis, Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34685.
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Though relatively young, the field of organic electronics is a rapidly growing market and considerable research is being done in creating a whole range of devices from organic molecules from organic field effect transistors to LEDs to photovoltaic devices. The field of organic photovoltaic in particular has become important in recent years with the push for newer, renewable sources of energy to end the dependence on fossil fuels. While the efficiencies of organic photovoltaic devices continue to rise, one barrier to their commercial adoption has been the limited lifetimes of these devices. While certain degradation methods of organic photovoltaics, such as photo-oxidation, have been extensively studied and solutions to these problems, such as encapsulation, are being researched, certain other degradation mechanisms are less understood and studied. The focus of this thesis is on one such degradation mechanism, UV degradation, specific to the ITO-pentacene interface in pentacene/C60 organic photovoltaic devices. Attempts were made to increase the lifetime of the devices by using phosphonic acids or oxygen plasma to modify the surface of the ITO. While conducting these experiments, the lack of a system to test the lifetime of multiple devices for long periods of time became apparent. As such as system was a requirement for future research into the lifetimes of organic photovoltaic devices a system was designed and built. The system would operate the photovoltaic device in a way comparable to its end-use and would allow over 100 devices to be tested simultaneously for durations exceeding 10,000 hours if necessary. This system would allow for statistically significant lifetime testing to be carried out in the future.
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Chintha, Cheerudeep. "Facilitating Automatic Setup in a Robotised Test Framework for Autonomous Vehicles by Path Planning and Real-Time Trajectory Generation." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-240417.
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The research in the field of autonomous vehicles and self-driving carsis growing at a rapid pace and strong initiatives are being taken to verifythe capability and functionality of such autonomous vehicles.Withcontinuous development being carried out in the field of AdvancedDriver Assist Systems (ADAS) and Autonomous Drive (AD) functions,ensuring safety, robustness and reliability of these functions is challengingand it requires advanced ways of verification and testing beforethese functions are deployed on the vehicle and delivered to thecustomer. Testing of these modern features can be done either on testtrack, real driving roads or in simulations by Computer Aided Engineering(CAE) . But testing a high-risk scenario in the real-worldwould be challenging due to safety concerns. Also, high regressionand continuous testing requires a test framework where the developmentand testing can be done in an efficient way.At Volvo Cars, it is envisioned that the best approach to test theAD vehicles is by subjecting the vehicle under test to several high riskscenarios by simulation based engineering and replicate the subset ofthese tests on a closed-loop test framework developed on the test track.This thesis is a part of FFI Funded Research Project called CHRONOS2where Volvo Car Corporation and other project partners aim to developthe closed-loop test framework for verification of AD Vehicles.This thesis work focuses on ensuring efficient and reproducible testingin the said test framework by accurate path planning and trajectorygeneration to drive the multiple test objects to their starting positionsin an unstructured test environment. The algorithm developedfor path planning should also ensure the generation of a safe path inreal-time for the test objects in case of failure or error in the test framework.The path-planning algorithm has been successfully implementedtaking the unstructured environment and vehicle dimensions into considerationresulting in a safe path avoiding obstacles and satisfyingnonholonomic constraints of the vehicle. The implemented architectureutilizes the parallel-process framework of Robot Operation System(ROS) and results in a algorithm which can run in real-time.Forskningen inom autonoma fordon och självkörande bilar växer i snabb takt och starka initiativ vidtas för att verifiera kapaciteten och funktionaliteten hos sådana autonoma fordon. Den kontinuerliga ut- vecklingen inom avancerade förarstödssystem (ADAS) och autonoma enheter (AD) gör det utmanande att garantera säkerhet, robusthet och tillförlitlighet för dessa funktioner och avancerade kontroller och tes- ter krävs innan dessa funktioner kan användas på fordonet och leve- reras till kunden. Testning av dessa moderna funktioner kan göras an- tingen på provspår, på riktiga vägar eller i simuleringar via “Compu- ter Assisted Engineering” (CAE). Att testa ett högriskscenario i verk- ligheten är svårt på grund av säkerhetshänsyn. Dessutom kräver hög regression och kontinuerlig provning ett testramverk där utveckling och testning kan ske på ett effektivt sätt. Volvo Personvagnar anser att det bästa sättet att testa AD-fordon är att låta fordonet testas under flera högriskscenarier via simuleringsba- serad teknik och replikera en delmängd av dessa test på en provspår. Detta examensarbete är en del av det FFI-finansierade forskningspro- jektet CHRONOS2, där Volvo Car Corporation och andra projektpart- ners utvecklar ett ramverk för verifiering av AD-fordon. Examensar- betet fokuserar på att säkerställa effektiv och reproducerbar testning i nämnda testramverk genom noggrann vägplanering och bangenere- ring för att driva testobjekten till sina startpositioner i en ostrukture- rad testmiljö. Den algoritm som utvecklats för vägplanering bör också säkerställa att en säker väg genereras i realtid för testobjekten om fel uppstår i ramverket. Banplaneringsalgoritmen har implementerats framgångsrikt med hänsyn till ostrukturerad miljö och fordonsdimensioner vilket resulte- rar i en säker väg som undviker hinder och uppfyller icke-holonoma begränsningar hos fordonet. Den implementerade arkitekturen använ- der parallellprocessramverket för Robot Operation System (ROS) och resulterar i en algoritm som kan köras i realtid.
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Kutlu, Aykut. "Design Of Kalman Filter Based Attitude Determination Algorithms For A Leo Satellite And For A Satellite Attitude Control Test Setup." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12610041/index.pdf.
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This thesis presents the design of Kalman filter based attitude determination
algorithms for a hypothetical LEO satellite and for a satellite attitude control test
setup.
For the hypothetical LEO satellite, an Extended Kalman Filter based attitude
determination algorithms are formed with a multi-mode structure that employs the
different sensor combinations and as well as online switching between these
combinations depending on the sensor availability. The performance of these
different attitude determination modes are investigated through Monte Carlo
simulations. New attitude determination algorithms are prepared for the satellite
attitude control test setup by considering the constraints on the selection of the
suitable sensors. Here, performances of the Extended Kalman Filter and Unscented
Kalman Filter are investigated. It is shown that robust and sufficiently accurate
attitude estimation for the test setup is achievable by using the Unscented Kalman
Filter.
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McCrone, Tim M. "The Creation of an Anodic Bonding Device Setup and Characterization of the Bond Interface Through the use of the Plaza Test." DigitalCommons@CalPoly, 2012. https://digitalcommons.calpoly.edu/theses/695.
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Recently there has been an increased focus on the use of microfluidics for the synthesis of different products. One of the products proposed for synthesis is quantum dots. Microfluidics often uses Polydimethylsiloxane for structure in microfluidic chips, but quantum dots use octadecene in several synthesis steps. The purpose of this work was to create a lab setup capable of anodically bonding 4” diameter wafers, and to characterize the bond formed using the Plaza test chip so that microfluidic devices using glass and silicon as substrates could be created.
Two stainless steel electrodes placed on top of a hot plate were attached to a high power voltage supply to perform anodic bonding. A Plaza test mask was created and used to pattern P type silicon wafers. The channels etched were between 300 and 500nm deep and ranged between 1000µm and 50µm. These wafers were then anodically bonded to Corning 7740 glass wafers. Bonding stopped once the entire surface of the wafer was bonded, determined by visual inspection. All bonds were formed at 400°C and the bond strength and toughness between wafers bonded at 400V and 700V was compared.
A beam model was used to predict the interfacial fracture toughness, and the stress at the bond was calculated with a parallel spring model. By measuring the crack length of the test structures under a light microscope the load conditions of the beam could be found. It was concluded that the electrostatic forces between the wafers give the best indication of what the bond quality will be. This was seen by the large difference in crack length between samples that were bonded using a thick glass wafer (1 mm) and a thin glass wafer (500µm). The observed crack lengths for the thick glass wafers were between 40 and 60µm. Thin glass wafers had a crack length between 20 and 40µm. The fracture toughness was calculated using the beam model approximation. Fracture toughness of the thin glass wafers was 7MPa m1/2, and of the thick glass wafers was 30 MPa m1/2. The fracture toughness of the thick glass wafers agreed with results found through the use of the double cantilever beam samples in literature. The maximum observed interfacial stress was 70 MPa.
Finally, to measure the change in the size of the sodium depletion zone formed during bonding, samples were placed under a scanning electron microscope (SEM). Depletion zones were found to be between 1.1 and 1.4µm for thin glass samples that were bonded at 400 and 700 volts. This difference was not found to have a significant effect on the strength or fracture toughness observed. Thicker glass samples could not have their depletion zone measured due to SEM chuck size.
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Ahsan, Mohammed Sabbir. "Experimental Setup of High Harmonic Generation Based Angle Resolved Photoemission Spectroscopy (HHG-ARPES) And Test Measurement on Tungsten (W) [110] Surface." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-147604.
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Jesse, Dirk, and Frank Jesse. "Qualitative Bewertung des Versuchsstandes zur Untersuchung des zweiaxialen Tragverhaltens von textilbewehrtem Beton." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1244044382818-76589.
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Infolge des Herstellungsprozesses textiler Bewehrungen ergeben sich unterschiedliche Materialeigenschaften in den beiden Hauptrichtungen (Schuss und Kette). Diese Unterschiede entstehen durch verschiedene Einflussfaktoren, z. B. aus dem Verbundverhalten oder der Querschnittsform der Rovings. Um das Tragverhalten des anisotropen Verbundwerkstoffes Textilbeton experimentell untersuchen zu können, müssen mögliche Einflüsse aus dem Versuchsaubau möglichst gering gehalten werden, bzw. – falls unvermeidbar – in ihrer Wirkung qualitativ und quantitativ bestimmt und bei der Auswertung der Versuchsergebnisse berücksichtigt werden. Auf der Grundlage der durchgeführten umfangreichen experimentellen Untersuchungen wird eine qualitative Bewertung des Versuchsstandes sowie der verwendeten berührungslosen Messtechnik, der Nahbereichsphotogrammetrie, vorgenommen.
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Tabakci, Alican. "Mechanical Properties Identification Of Viscoelastic / Hyperelastic Materials Based On Experimental Data." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612634/index.pdf.
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Mechanical simulation of viscoelastic materials and assigning a viscoelastic
material to the modeled parts in the simulations are difficult task. For the
simulations, material model should be well chosen and material coefficients of the
chosen models should be known.
In order to obtain accurate simulations, hyperelastic characteristics of the
viscoelastic materials should be investigated and hyperelastic model should be
incorporated in the solutions. Material models and material model&rsquos coefficients are chosen with the help of mechanical tests/experiments for these situations. The main goal of this thesis is to optimize material model&rsquo
s coefficients by using an indenter test setup results and inverse finite element modeling. To achieve this, firstly by using a haptic device and other required equipments an indenter setup was prepared to test the materials mechanically. Inverse finite element modeling method is used in order to model the materials according to their viscoelastic and hyperelastic characteristics. The model obtained from analysis was optimized by using the results obtained from indenter setup according to experimental test data. By doing this, the correctness of the model chosen by inverse finite element modeling was proved for the tested material and material model coefficients were calculated correctly.
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Abraham, Gabriel Kaduvinal. "Design and Development of an Experimental Test Rig for Heat Sinks." Thesis, KTH, Maskinkonstruktion (Inst.), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-283319.
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Heat sinks are used mainly to take away the excessive heat which are produced in a component. This transfer of heat enables a smooth operation of the system with the heat generating component. The efficiency of heat sink is often dependent on the amount of heat it can take away within the smallest duration of time. Several designs and manufacturing techniques have been developed to improve this performance of heat sinks. This project aims at building a test rig which can be used to test the efficiency of heat sinks. The test rig should be designed to be modular, i.e. it should be able to test heat sinks of different sizes and also adhering to the design requirements. The project started with a broad information search on heat sinks and different testing methods. A system architecture was formulated for this test rig as a beginning stage and to find the different architectural components. The main principal components were selected fulfilling the design requirements. A chiller with pump, a flow meter with controller, temperature and pressure sensors and piping’s including a flexible pipe were the main components of the system created. When the specific components were chosen, the design was embodied and the components were arranged in a compact manner as a SolidEdge CAD-model. After several design iterations, a final design was selected. The experimental test rig was then built in the flow lab. The built experimental test setup is able to be adjusted to install heat sinks of different sizes making it modular in design. Future work to improve the performance of the test rig is also suggested.Värmesänkor, som exempelvis kylflänsar, används främst för att transportera bort värme som orsakas av förluster i en komponent. Denna värmeöverföring möjliggör en smidig drift av systemet där den värmegenererande komponenten ingår. Värmesänkans effektivitet beror på hur mycket värmeeffekt den kan transportera bort. Flera olika konstruktioner och tillverkningstekniker har utvecklats för att förbättra värmesänkors kylprestanda. Målet med detta projekt är att bygga en testrigg som kan användas för att testa kylflänsars effektivitet. Testriggen ska utformas så att den är modulär, dvs. den ska kunna användas för att testa kylflänsar av olika storlekar. Projektet startade med en bred informationssökning om kylflänsar och olika testmetoder. En systemarkitektur skapades som ett början och för att hitta systemets olika principkomponenter. De viktigaste huvudkomponenterna som uppfyllde designkraven valdes sedan. En kylare med pump, en flödesmätare med regulator, temperatur- och tryckgivare och rörledningar, inklusive ett flexibelt rör var de viktigaste komponenterna i det system som skapades. De specifika komponenterna valdes sedan och de representerades och arrangerades på ett kompakt sätt som en system-CAD-modell i SolidEdge. Efter flera iterationer valdes en slutlig konstruktion, och den experimentella testriggen byggdes sedan i flödeslaboratoriet. Den experimentella testriggen kan justeras för att installera kylflänsar av olika storlekar, vilket innebär att den, i viss mån, är modulär. Framtida arbeten för att förbättra testriggens prestanda föreslås också.
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Unal, Sadullah Utku. "Design, Construction And Preliminary Testin Of An Aeroservoelastic Test Apparatus To Be Used In Ankara Wind Tunnel." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607034/index.pdf.
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In this thesis, an aeroservoelastic test appratus is designed to investigate the flutter phenomena in a low speed wind tunnel environment. Flutter is an aeroelastic instability that may occur at control surfaces of aircrafts and missiles. Aerodynamic, elastic, and inertial forces are involved in flutter. A mathematical model using aeroelastic equations of motion is derived to investigate flutter and is used as a basis to design the test setup. Simulations using this mathematical model are performed and critical flutter velocities and frequencies are found. Stiffness characteristics of the test setup are determined using the results of these simulations. The test setup is a two degrees of freedom system, with motions in pitch and plunge, and is controlled by a servomotor in the pitch degree of freedom. A NACA 0012 airfoil is used as a control surface in the test setup. Using this setup, the flutter phenomena is generated in Ankara Wind Tunnel (AWT) and experiments are conducted to validate the results of the theoretical aeroelastic mathematical model calculations.
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Ayan, Hilal. "Identify synthetic polymers used in cosmetics and further test their biodegradation in aqueous setup in order to assess their impact on the environment." Thesis, KTH, Industriell bioteknologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-259570.
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Plastics have a wide application field, where cosmetic products are one of them. Polymers which are building blocks to plastics exists in many variants, overall they can be categorized into two groups; microplastics and water soluble polymers. Both polymer types are important to study and understand since polymers in general are not covered by any legislation. To gain a more profound understanding of their impact on environment this study was conducted. In collaboration with SSNC (Naturskyddsföreningen), a database containing hundreds cosmetic products was processed. The most occurring polymers were quantified and prevalent ingredients having “poly” in their name were selected for further investigation namely Nylon 12-20 (microplast) and Acrylates C/10-30 Alkyl-crosspolymer (water soluble). A standardized analysis method OECD 301 F was performed to test the polymers biodegrading ability. Results from biodegradation method showed that, neither of the two polymers is readily biodegradable in aqueous environment, despite their different properties. In connection with the obtained results, a filtration analysis was performed, with the purpose to determine the possibility to capture the polymers using microfilters. Results mainly showed flowthrough of both polymers. Relating the results to reality implies that these polymers are not captured in waste water treatment plant due to inefficient filtration and thereby spread to the environment. In addition more research should be devoted to water-soluble polymers and their impact on nature. Based on all compiled results, it is proposed that legislation addressing microplastics should be edited and revised in such a way that water soluble polymers are included in future prohibitions (against microplastics).Plast har många användningsområden varav kosmetiska produkter är ett av dem. I kosmetika används exempelvis naturliga ämnen, sådana som förekommer i naturen och således kan brytas ned. Sedan finns syntetiska polymerer, sådana som syntetiseras och tillverkas av människor. Det finns oerhört många varianter av syntetiska polymerer som används inom kosmetika, generellt kan de kategoriseras i två grupper; mikroplaster och vattenlösliga polymerer. Med hjälp av Naturskyddsföreningens databas som innehåller hundratals kosmetikaingredienser, söktes de komponenter som hade ”poly” i sitt namn eftersom de inte täcks av lagstiftning. Bland dessa, valdes två mest förekommande polymerer för att studeras vidare, nämligen Nylon 12-20 (mikroplast) och Acrylates C/10-30 alkyl crosspolymer (vattenlöslig). En standardiserad analysmetod OECD 301 F tillämpades för att testa deras biologiska nedbrytbarhet. Resultatet från nedbrytbarhetstestet visade att ingen av polymertyperna, trots deras åtskiljande egenskaper, är lättnedbrytbar i vattenmiljöer. I följd av resultatet från analysen genomfördes en filtreringsanalys på KTH, för att avgöra om respektive polymer går att fånga upp i olika storlekar av mikrofilter. Resultatet visade att ingen av dem fångades upp (med den utrustning som var tillgänglig på KTH). Baserat på resultaten föreslås det att lagstiftningar som innefattar mikroplaster bör redigeras och revideras på ett sådant sätt att vattenlösliga polymerer är inkluderade i framtida förbud (mot mikroplaster). Utöver detta bör mer forskning ägnas åt vattenlösliga polymerer och deras påverkan på naturen.
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Friedag, Peter [Verfasser], and Christian [Akademischer Betreuer] Weinheimer. "Setup and calibration of a position sensitive microchannel plate detector and analysis of a test run optimizing the WITCH experiment / Peter Friedag ; Betreuer: Christian Weinheimer." Münster : Universitäts- und Landesbibliothek Münster, 2013. http://d-nb.info/1141383616/34.
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Wunderer, Cornelia B. "Imaging with the test setup for the coded mask INTEGRAL spectrometer SPI performance of a coded aperture [gamma]-ray telescope at 60 keV - 8 MeV /." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=967128390.
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Swarén, Mikael. "Experimental test setups and simulations in skiing mechanics." Licentiate thesis, KTH, Strukturmekanik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-144408.
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Product testing and development are essential parts in sports and for the athletes in their quest to reach the podium. Manufacturers of sports equipment often use basic test methods which do not test the equipment in a sports specific way. Much of the equipment used by world-class athletes is chosen based only on subjective tests and the athletes’ feelings. One short term aim was therefore to develop test methods for objective tests of sports equipment that also tested the equipment in a sports specific way. Another aim was to integrate mechanics and simulations to enhance the understanding of the test results. The more long term aims are to contribute to increased theoretical knowledge regarding test methods for sports equipment and to contribute to the development of test methods to create new and better sports equipment. Experimental tests combined with simulations can give valuable information to improve the performance and safety of sports equipment. Three studies dealt with the issue of objective yet sport specific test methods for sports equipment. The main methodological advancement is the modification of established test methods together with conventional mechanics calculations. New test devices and methodologies are proposed for alpine ski helmets and cross-country ski poles. Suggestions are given for improved test setups as well as theoretical simulation are introduced for glide tests of skis. The results show how sport specific test methodologies together with theoretical calculations can improve the objectiveness and relevance when testing sports equipment. However, the collected and used data require high precision to obtain high accuracy in the simulations. High data accuracy can be an issue in field measurements but also due to manufacturers not disclosing key material data. Still, the used methods and calculations in this thesis produce relevant and reliable results which can be implemented to accurate evaluations of different sports equipment. Even though it has not been a first priority aim in this work, the results from the alpine helmet study have been used by helmet manufacturers to design new helmets with increased safety properties. This further show how an objective and sport specific test approach together with theoretical simulation can improve sports equipment and in the longer perspective, also the athletes’ performances.QC 20140423
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Soma, Sai Goutham. "An Experimental Investigation on Friction and Scuffing Failure of Lubricated Point Contacts." Wright State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=wright1450715668.
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Rotzoll, Kolja. "Hydraulic Parameter Estimation Using Aquifer Tests, Specific Capacity, Ocean Tides, and Wave Setup for Hawai'i Aquifers." Thesis, Water Resources Research Center, University of Hawaii at Manoa, 2007. http://hdl.handle.net/10125/22265.
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The islands of Hawaii face increasing ground-water demands due to population growth in the last decades. Analytical and numerical models are essential tools for managing sustainable ground-water resources. The models require estimates of hydraulic properties, such as hydraulic conductivity and storage parameters. Four methods were evaluated to estimate hydraulic properties for basalts on the island of Maui. First, unconventional step-drawdown tests were evaluated. The results compare favorably with those from classical aquifer tests with a correlation of 0.81. Hydraulic conductivity is log-normally distributed and ranges from 1 to 2,500 m/d with a geometric mean of 276 m/d and a median of 370 m/d. The second approach developed a simplified parameter-estimation scheme through an empirical relationship between specific capacity and hydraulic parameters that utilized Hawaii's state well database. For Maui's basalts, the analysis yields a geometric-mean and median hydraulic conductivity of 423 and 493 m/d, respectively. Results from aquifer tests and specific-capacity relationships were used to generate island-wide hydraulic-conductivity maps using kriging. The maps are expected to be of great benefit in absence of site-specific field assessments. In the third approach, ocean-tide responses in the central Maui aquifer were used to estimate an effective hydraulic diffusivity of 2.3 x 10^7 m^2/d. The position of the study area necessitated refining the existing analytical solution that considers asynchronous and asymmetric tidal influence from two sides in an aquifer. Finally, measured ground-water responses to wave setup were used to estimate hydraulic parameters. Setup responses were significant as far as 5 km inland and dominated barometric-pressure effects during times of energetic swell events. The effective diffusivity estimated from setup was 2.3 x 10^7 m^2/d, matching that based on tides. Additionally, simple numerical ground-water flow models were developed to assess the accuracy of results from analytical solutions for step-drawdown tests, dual-tides and wave setup, and to evaluate sediment-damping effects on tidal propagation. The estimated mean hydraulic conductivities of the four methods range between 300 and 500 m/d for basalts in Maui. The results of different methods are consistent among each other and match previous estimates for basalts.USGS Pacific Island Water Science Center
33
Loebell, Jurek [Verfasser], and Josef [Akademischer Betreuer] Jochum. "Setup of a UHV System for the Production of Tungsten TES / Jurek Loebell ; Betreuer: Josef Jochum." Tübingen : Universitätsbibliothek Tübingen, 2017. http://d-nb.info/1199546941/34.
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Malagoli, Letizia. "Comportamento ciclico di pareti di controventamento in CLT con cavi post-tesi: progettazione di dettaglio del sistema e delle prove sperimentali." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.
Find full textAbstract:
Tra le diverse tecnologie a basso danneggiamento studiate recenti, una delle soluzioni maggiormente efficaci testate è data dall'utilizzo di pareti in CLT post-tese, dissipative e ricentranti, in grado di concentrare i danni in elementi di connessione “sacrificali” (sostituibili a seguito del danneggiamento) e di limitare gli spostamenti residui. Tale tecnologia innovativa necessita di soluzioni all'avanguardia che devono essere indagate sperimentalmente prima di poter essere introdotte nel mercato. Questa dissertazione ha lo scopo di esporre tutti i passaggi riguardanti la progettazione di dettaglio di un nuovo sistema di controventamento in CLT con cavi post-tesi. Questa tecnologia verrà successivamente testata attraverso prove sperimentali.
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Chen, Zongyi [Verfasser], Stephan [Akademischer Betreuer] Frei, and Peter [Gutachter] Krummrich. "Low frequency field prediction applied to CISPR 25 test setups / Zongyi Chen ; Gutachter: Peter Krummrich ; Betreuer: Stephan Frei." Dortmund : Universitätsbibliothek Dortmund, 2019. http://d-nb.info/1210703815/34.
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Lisý, Ondřej. "Stavebně technologický projekt ayurvédského pavilonu v Počátkách." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409935.
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The diploma thesis deals with realization of an Ayurvedic pavilion in the premises of Saint Katerina Resort. The proposed new compound is designed to extend the leisure services of the Saint Katerina Resort in Počátky. The feasibility study of the main technological stages of the project is solved in this diploma thesis. The construction of the object is described in the technical report. Both a detailed itemized budget of the construction and a detailed timetable to show the duration of each process is elaborated for the construction technology project. Futhermore, the design of site construction equipment, design of machine assembly, time deployment of machines and staff balance is elaborated. The project includes a technological regulation of the realization of the skeleton supporting frame structure and both control and test schedule. The work safety for the assembly of the wooden building supporting frame is composed.
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Gapillout, Damien. "Développement de bancs de tests dédiés à la modélisation comportementale d’amplificateurs de puissance RF et micro-ondes." Thesis, Limoges, 2017. http://www.theses.fr/2017LIMO0071/document.
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Le travail présenté dans ce manuscrit a pour objet l’étude et le développement d’un banc de caractérisation généraliste appliqué à l’extraction du modèle comportemental d’amplificateur TPM-NIM (Two-Path Memory Nonlinear Integral). Ce modèle qui dispose d’une des architectures les plus abouties au laboratoire XLIM requiert une instrumentation microonde haut de gamme, très onéreuse, hors de portée de la majorité des concepteurs pour sa mise en œuvre expérimentale. L’objectif est donc de proposer des principes de mesure originaux permettant d’identifier le modèle TPM-NIM avec une instrumentation standard. Dans ces travaux, deux bancs sont présentés : tout d’abord, un banc de caractérisation développé autour d’une instrumentation de pointe disposant des meilleures propriétés pour extraire le modèle. Puis, un banc construit autour d’une instrumentation standard mais incluant des méthodes de traitement et de mesure novatrices. Ces deux bancs ont été utilisés avec plusieurs véhicules de tests et il ressort que le second permet de diminuer le bruit des mesures de phase tout en réduisant le coût total des équipements. Enfin, une dernière partie est consacrée à la comparaison du modèle TPM-NIM avec deux modèles comportementaux classiques mettant en avant sa polyvalenceThe work presented in this manuscript is devoted to the study and development of a general characterization bench applied to the extraction of the TPM-NIM (Two-Path Memory Nonlinear Integral) amplifier behavioral model. This model, has one of the most advanced architectures at the XLIM laboratory. It requires a high-end microwave instrumentation, overpriced and beyond reach for most of the designers for its experimental implementation. The aim is to propose some original measurements principles allowing the TPM-NIM model’s identification with a standard instrumentation. Two benches are presented in these works : firstly, a characterization bench, developed using a high performance instrumentation with the best properties to extract the model. Then, a bench, built with a standard instrumentation but through innovative processing and measurement methods. These two benches have been used with several test vehicles and it appears that the second one decreases the noise of phase measurements while reducing the equipment’s total cost. Finally, a last part is dedicated to the comparison of the TPM-NIM model with two classic behavioral models by emphasizing its versatility
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Chen, Kai Liao, and 廖振凱. "ABS Test and Simulation Hardware Platform Setup." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/97576768776677543974.
Full textAbstract:
碩士中華科技大學
電子工程研究所碩士班
99
Abstract In this paper, we use Anti-lock braking system test and simulation platform for the establishment of Hall Sensor wheel speed, vehicle speed sensors, and Strain Gauge to measure braking force. We return the measured data through the signal acquisition card (DAQ) to LabVIEW for interpretation and timely send signals to start the control valve generating the maximum braking coefficient between the wheel and the brake to analyze whether the slip ratio is over 0.2. If the slip ratio is larger than 0.2, the operation of the solenoid valve turns on immediately, and then it produces the shortest stopping distance and sets the slip ratio at around 0.2 in the vicinity of the function to prevent slipping. When the deadlock situation occurs on the locomotive, ABS braking system will intervene the original braking system releasing the pressure of the brake. Then make the deadlocked locomotive brake to be released, so that the wheels restore rolling and we regain the ability to control the locomotive. Later on, brake pressure will resume so that the vehicle continue to slow down. First, we design a stepping motor which is suitable for motorcycles in the indoor test of hydraulic anti-lock brake module to enable the ABS module-body aircraft ABS miniaturization and simplification of the system testing and simulation platform design direction. In this paper, we focus on motorcycle ABS system performance testing and simulation platform, and then build an experiment for testing on real time hardware and software simulation. Key Words: ABS，LabVIEW，Hall Sensor，Strain Gauge，Automated testing，ABS Test platform.
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Huang, Yu-Kuan, and 黃宇寬. "The setup and test of piezoresponse force microscope." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/fkddhs.
Full textAbstract:
碩士國立高雄大學
應用物理學系碩士班
97
In the last decade, many researchers focus on the properties of ferroelectric materials because of their applications in the field of non-volatile memories and microelectronics. Recently, the piezoresponse force microscope has been established as a primary technique for the domain imaging and the ferroelectric characterization of ferroelectric materials under the nanometer scale. In this thesis, the out-of-plane and in-plane piezoresponse force microscope based on the XE-100 atomic force microscope, manufactured by Park Systems, is set up and tested. In order to obtain the high-resolution domain images, the influences of the measuring parameters of the piezoresponse force microscope on the domain imaging are investigated during the domain observation of the PbCaTiO3 bulk sample. In addition, the PbZrTiO3 bulk sample is also used to test the piezoresponse force microscope and the typical stripe domain of PbZrTiO3 is observed. For the Bi0.9Pb0.1FeO3 thin films, the in-plane and out-of-plane components of domain structure, the polarization switching by poling of the specified regions, and the quantitative measurements of local hysteresis are made in this home-build piezoresponse force microscope.
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Cheng-ChiehWang and 王政傑. "Light-Energy-Harvesting System and Its Test Environmental Setup." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/h39278.
Full textAbstract:
碩士國立成功大學
電機工程學系
105
Mobile devices and wireless sensor nodes (WSNs) have been rapidly developed in recent years and will get used much more widely in the future. To extend battery usage time of mobile devices and WSNs and to meet their strict load demand, high-efficiency and fast-transient power management IC is needed. Light-energy harvesting is an elegant solution by integrating photovoltaic (PV) devices into such applications to further extend battery usage time or even make them autonomous, forming a light-energy-harvesting system. To examine the performance of the light-energy-harvesting system, both PV devices and light-energy harvesters should be tested and measured. Solar array simulator (SAS) and solar simulators are widely used instruments with accurate and multifunctional feature. Still, they are expensive and hard to carry. In this thesis, test environmental setup is proposed using a demonstration box with peripheral components to setup both outdoor- and indoor-light environment with controllable power density of the light sources within wide application range. The demonstration box can be used to test and measure PV devices and light-energy harvesters with enough accuracy, lower cost, and better portability. To verify its availability, measurement result of PV devices and light-energy harvester using different ways are compared to each other with elaborated reasons for measurement differences. The proposed demonstration box models outdoor-light condition with power density from 0 to 1,999W/m2 and models indoor-light condition with power density from 0 to 20,000 lux with enough uniformity. In addition, it only occupies size of 20cm × 20cm × 20cm with very-light weight, featuring great portability. On the other hand, the light-energy-harvesting system in this thesis contains a light-energy harvester and a DC-DC buck converter. The adopted light-energy harvester from previous work features high efficiency and fast-transient response under fast-irradiance-changing condition. The DC-DC buck converter employing current-mode control and fast load-transient technique is re-designed with lower inductance to further improve the load-transient response.
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Chen, Yen-Chang, and 陳延昌. "APPLICATION OF IC TEST PROGAME SETUP USING NEURAL NETWORK." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/10820038351691908791.
Full textAbstract:
碩士國立清華大學
工業工程與工程管理學系碩士在職專班
103
In the semiconductor assembly and test (A/T) industry, using physics equations to deduce the parameter settings of machines is difficult due to complicated machine movements. Therefore, the purpose of this research is to use neural network to modelize the complex machine behaviors and tool parameter settings and then determine the practical key parameters for test programs. After modelizing the machine attributes with neural network, these attributes were trained and then applied to assist machine settings by using the given machine attributes. The same procedures were implemented in several machines and afterwards the tool matching machine with the performance that is nearest to the expected result and specification was selected to collect the production data. In all A/T factories, test machines are relatively expensive and the test programs are mainly owned by customers; therefore, the techniques of writing test programs are barely existed domestically. However, there is an enormous amount of experience in executing tests and partial modifications. This paper aims to develop the domestic ability of writing test programs through transforming these experiences into self values. Furthermore, there are thousands of procedures in test programs, so how to refine parameters and identify the essential ones in the process of accumulating the ability of writing test programs is extraordinary important. In this study, using neural network back-propagation algorithm, the most crucial parameters were determined and the purpose of developing more efficient test processes was achieved as well. Keywords : Neural network, Back propagation, IC test
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Tzeng, Shr-Jie, and 曾詩傑. "Setup of Measurements for the Experimental Test to the Thermoelectric Generators." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/62039114644037879150.
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Tao, Chun-hao, and 陶鈞豪. "Experimental setup and measurement of Johnson-Kendall-Roberts(JKR) test of Adhesion." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/10471842044066260912.
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碩士國立成功大學
土木工程學系碩博士班
95
JKR theory has been widely applied to measure the adhesion and mechanical properties of materials. The main goal of this thesis is to setup an experimental apparatus of JKR adhesion test and to measure the work of adhesion W and elastic modulus E of Polydimethylsiloxane(PDMS). Using this JKR apparatus, the contact radius a and load P in the loading and unloading process of the contact between glass ball and PDMS sample were measured. Based on JKR theory, we calculated the elastic modulus E and work of adhesion W of PDMS from the experimental data. The effects of the sample preparing process and the ratio of sample thickness H and radius of glass ball on the elastic modulus E and work of adhesion W were also discussed.
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陳祈佑. "Setup of Measurements for the Experimental Test to the Thermoelectric Cooling(TEC)." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/12519360795912637595.
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碩士國立臺灣海洋大學
輪機工程系
100
This thesis is to investigate market thermoelectric cooler chip performance and design of the measurement platform. In order to confirm the accuracy of the measurement of the design platform, the experiment is divided two parts；The first part：According to the ASTM D5470 design measurement platform, testing metal and non-metal in the Steady-State thermal conductivity experiments. Compare the measurements and reference value, its error rate is less than 3％. The second part：The commercial product thermoelectric cooler chips were selected for properties test and the three types of product are as follows: TEC1-12706.40、TMH060061344、TEC1-12704.40. Finally, the chip measurement result TEC-12706.40 manufactures can meet the performance specifications provided by the experimental results.
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Wang, Bang-Zhi, and 王邦志. "Test Setup for Design Approval of PC sleeper in Taichung MRT System." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/97495240096503417146.
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碩士國立雲林科技大學
營建工程系
104
The ongoing Taichung MRT green line project use a lot of prestressed concrete sleepers. Before mass production of PC sleepers, an design approval test is required to verify the performance of the sleeper. The sleeper design of Taichung MRT system is quite similar to that of Taipei MRT system, both refer to code chapter 03426, sections 3.9 and 3.10 for the design approval test. The Yuntech material testing and supporting center conducted the design approval test in 2015 spring. The test items includes sleeper bending test, fastening insert test, fastening uplift test, fastening repeated load test, fastening longitudinal restraint test, fastening transverse restraint test. We improved the test setups and procedures according to the specified test methods and completed the design approval test within 5 weeks. The laboratory testing experience can be borrowed in the future projects. Keywords：prestressted concrete, sleeper, test, setup
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Gonner, Nathaniel. "Design and experimental setup for self-centering steel concentrically braced frame test structure." 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1463970.
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Garbin, Carlos Henrique Cano. "Analysis of the fire effect on loadbearing LSF walls and design of experimental test setup." Master's thesis, 2019. http://hdl.handle.net/10198/23199.
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Mestrado de dupla diplomação com a UTFPR - Universidade Tecnológica Federal do ParanáThis work present a study of the fire behaviour of loadbearing LSF walls. This study was made with the development of model in finite elements and parametric analysis to evaluete the effects of steel section and plasterboard thickness on the fire resistance. It was also design the experimental test setup for future experimental researchs in IPB facilities. The model was developed with the use of shell elements for the steel structure and solid elements for the boards. It was made mechanic, termal and termo-mechanic simulations, that were validated with the use of experimental tests results previous realized in University of Queensland. The parametric analysis demostrated that the plasterboard thickness was of little effect in the fire behaviour of the wall, close to 3.5% of increase in the temperature evolution, what can be explained by the composite panel utilized. The steel section thickness however presented a greater influence, 58.15% of increase of the loadbeaing capacity of the wall.
Este trabalho apresenta um estudo do comportamento ao fogo de paredes portantes de LSF. Este estudo foi feito com o desenvolvimento de modelo em elementos finitos e análise paramétrica para avaliar os efeitos da seção de aço e da espessura da placa de gesso na resistência ao fogo. Também foi projetada a configuração do teste experimental para futuras pesquisas experimentais nas instalações do IPB. O modelo foi desenvolvido com a utilização de elementos de casca para a estrutura de aço e elementos sólidos para as placas. Foram feitas simulações mecânicas, térmicas e termo-mecânicas, que foram validadas com a utilização de resultados de testes experimentais realizados anteriormente na Universidade de Queensland. A análise paramétrica demonstrou que a espessura da placa de gesso teve pouco efeito no comportamento ao fogo da parede, cerca de 3,5% de aumento na evolução da temperatura, o que pode ser explicado pelo painel compósito utilizado. A espessura da seção de aço no entanto apresentou maior influência, 58,15% do aumento da capacidade de carga da parede.
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Samarawickrama, Kasun Chamara. "Determination of impulse generator setup for transient testing of power transformers using optimization-enabled electromagnetic transient simulation." 2014. http://hdl.handle.net/1993/23937.
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Natural lightning strikes induce impulsive overvoltages on transmission lines and its terminal equipment. These overvoltages may cause failures in insulation mechanisms of electrical devices in the power system. It is important to test the insulation strength of a device against these impulsive overvoltages. Usually, Marx generators are used to generate impulse waveforms for testing purposes. A novel approach is proposed to obtain resistor settings of a Marx generator for impulse testing of power transformers. This approach enables us to overcome most of the major challenges in the commonly used trial-and-error method, including excessive time consumption and potential damage to the transformer. The proposed approach uses the frequency response of the transformer to synthesize a circuit model. Then, a genetic algorithm based optimization-enabled electromagnetic transient simulation approach is used to obtain the resistor settings. The proposed approach is validated by a real impulse test conducted on a three phase power transformer.
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Gao, Zhufeng. "Assembly and test operations with multipass requirement in semiconductor manufacturing." Thesis, 2014. http://hdl.handle.net/2152/24901.
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In semiconductor manufacturing, wafers are grouped into lots and sent to a separate facility for assembly and test (AT) before being shipped to the customer. Up to a dozen operations are required during AT. The facility in which these operations are performed is a reentrant flow shop consisting of several dozen to several hundred machines and up to a thousand specialized tools. Each lot follows a specific route through the facility, perhaps returning to the same machine multiple times. Each step in the route is referred to as a "pass." Lots in work in process (WIP) that have more than a single step remaining in their route are referred to as multi-pass lots. The multi-pass scheduling problem is to determine machine setups, lot assignments and lot sequences to achieve optimal output, as measured by four objectives related to key device shortages, throughput, machine utilization, and makespan, prioritized in this order. The two primary goals of this research are to develop a new formulation for the multipass problem and to design a variety of solution algorithms that can be used for both planning and real-time control. To begin, the basic AT model considering only single-pass scheduling and the previously developed greedy randomized adaptive search procedure (GRASP) along with its extensions are introduced. Then two alternative schemes are proposed to solve the multipass scheduling problem. In the final phase of this research, an efficient procedure is presented for prioritizing machine changeovers in an AT facility on a periodic basis that provides real-time support. In daily planning, target machine-tooling combinations are derived based on work in process, due dates, and backlogs. As machines finish their current lots, they need to be reconfigured to match their targets. The proposed algorithm is designed to run in real time.text
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Wunderer, Cornelia B. [Verfasser]. "Imaging with the test setup for the coded mask INTEGRAL spectrometer SPI : performance of a coded aperture γ-ray telescope at 60 keV - 8 MeV / Cornelia B. Wunderer." 2003. http://d-nb.info/967128390/34.
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