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1
Oualla, Hicham. "Contributions à l'identification en boucle ouverte/fermée des systèmes à base de données binaires". Electronic Thesis or Diss., Normandie, 2022. http://www.theses.fr/2022NORMC229.
Testo completoAbstract (sommario):
Cette thèse est consacrée à l'identification des systèmes à base de données binaires. Dans un premier temps, une présentation succincte de l'ensemble des méthodes d'identification des systèmes basé sur l'utilisation des données binaires existant dans la littérature est donnée. Dans la suite nous nous sommes intéressé au problème d'identification en boucle ouverte des systèmes à sortie et entrée binaires. Nous proposons des méthodes permettant l'identification des systèmes RIF et plus complexes les RII ayant une entrée et sortie binaires. Ces méthodes sont analysées et testées par des exemples numériques. Dans le reste de ce travail, nous proposons des premières solutions aux problèmes d'identification en boucle fermée des systèmes à base de données binaires. Les premières solutions sont dédiées aux systèmes à sortie binaire, l'excitation de la boucle fermée est supposée être à haute résolution. Enfin, deux méthodes sont proposées pour les systèmes en boucle fermée à sortie et entrée binaires. Ces solutions sont testées sur des exemples numériques pour mesurer leurs performancesThis thesis is devoted to the identification of systems based on binary data. First, a brief presentation of all the methods of identification of systems based on the use of binary data existing in the literature is given. In the following, we are interested in the problem of open loop identification of systems with binary output and input. We propose methods for the identification of FIR systems and more complex IIR systems with binary input and output. These methods are analyzed and tested by numerical examples. In the rest of this work, we propose first solutions to the problems of closed-loop identification of systems based on binary data. The first solutions are dedicated to binary output systems, the closed loop excitation is assumed to be high resolution. Finally, two methods are proposed for closed loop systems with binary output and input. These solutions are tested on numerical examples to quantify their performances
2
Shang, Feng. "INPUT-OUTPUT WATER QUALITY MODEL IN WATER DISTRIBUTION SYSTEM". University of Cincinnati / OhioLINK, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1028649564.
Testo completo
3
Hernańdez, Correa Evelio. "Control of nonlinear systems using input-output information". Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/11176.
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4
Ozkan, Ugur. "Application of the constrained implicants set concept to the minimization of binary functions". Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA239470.
Testo completoAbstract (sommario):
Thesis (M.S. in Electrical and Computer Engineering)--Naval Postgraduate School, September 1990.Thesis Advisor(s): Yang, Chyan ; Butler, Jon T. "September 1990." Description based on title screen as viewed on March 22, 2010. Author(s) subject terms: Constrained Implicants Set Concept, Binary Minimization. Includes bibliographical references (p. 75-76). Also available in print.
5
Maeda, Ken. "Nonlinear control system of inverted pendulum based on input-output linearization". Diss., Online access via UMI:, 2006.
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6
Ding, Minhua. "Multiple-input multiple-output wireless system designs with imperfect channel knowledge". Thesis, Kingston, Ont. : [s.n.], 2008. http://hdl.handle.net/1974/1335.
Testo completo
7
Morimoto, Mai. "Signal transformation at the input and output of the Drosophila visual system". Thesis, University of Cambridge, 2017. https://www.repository.cam.ac.uk/handle/1810/267911.
Testo completoAbstract (sommario):
A key function of the nervous system is to sample data from the external world, generate internal signals, and transform them into meaningful information that can be used to trigger behaviour. In order to gain insight into the underlying mechanism for signal transformation, the visual system has been extensively studied: partly owing to the stimulus being reliably presentable, and the anatomy being well described. The Drosophila visual system is one such system, with the added advantage of genetic tractability. In this thesis, I studied the filtering property of visual neurons at two levels, biophysical and circuit levels. The first study looks at signal transformation at the biophysical level, at the input of the visual system, in photoreceptors. Voltage-gated potassium channels counteract the depolarization caused by opening of light sensitive channels, and the heterogeneous properties of their kinetics can fine-tune the photoreceptor’s frequency response to fulfill the animal’s ecological requirements. Shaker (Kv1) and Shab (Kv2) have been identified as fast and slow inactivating components of the photoreceptor’s outward currents, however a current with intermediate kinetics (IKf) has not been molecularly identified, but had been postulated to be Shal (Kv4). I focused on characterizing this current using whole-cell patch clamp in wild type and mutants, and using antibodies for Shal. My results from whole-cell patch clamp indicated that IKf in adult R1-6 cells are not Shal, from their voltage dependence and insensitivity to a Kv4 blocker. This calls for alternative molecular basis for IKf, which is likely to be a slow inactivating component of Shaker, or a combination of its many splice variants. The second study looks at signal transformation at the circuit level, at the output end, in the third optic neuropil, lobula. Visual projection neurons project from the lobula to the central brain, and have been proposed to carry behaviourally relevant visual features to higher brain regions. It was recently shown that optogenetic activation of individual visual projection neuron types could induce distinct behaviours such as takeoff and backward walking, linking these visual neurons to specific behavioural programs downstream. Using in vivo two-photon calcium imaging, I recorded visually evoked calcium responses from three of these cell types. Cell types that showed induced takeoff and backward walking preferentially responded to dark looming stimuli or fragmented expanding local features, suggesting their role in behaviours triggered by object approach. To explore how this visual information is transformed in the downstream circuit, we identified several candidate neurons that receive input from this cell type by anatomical overlap, and then validated their connections using optogenetic activation and calcium imaging. One downstream cell-type that projects bilaterally had very similar response properties to its upstream partner, whereas another cell-type that projects ipsilaterally seemed to filter out some information from its upstream partner. This is one of the first studies that functionally characterizes lobula visual projection neurons and their downstream partners in Drosophila, and their response properties agree with the general idea that visual information becomes increasingly selective as it is sent to higher brain regions.
8
Jones, Catherine Linda. "Characterisation of input and output mechanisms in the zebra finch circadian system". Thesis, University of Birmingham, 2011. http://etheses.bham.ac.uk//id/eprint/3132/.
Testo completoAbstract (sommario):
Circadian rhythms are biochemical, physiological, or behavioural over 24 hours. The avian circadian system is complex, involving numerous oscillators in the brain. I characterised two hypothalamic input mechanism (melatonin receptors and light) and one output mechanism (vasotocin) in the zebra finch. Melatonin receptors were cloned and expression levels investigated in the brain and in peripheral tissues. Receptors were found in all tissues, with some pronounced rhythmic mRNA expression. Tissue-specific differences in temporal distribution, peak expression and amplitude suggests melatonin have varied roles in different tissues and different receptors control/influence these roles. Effect of light in the hypothalamus was investigated by exposing light into the dark phase of an LD cycle and studying the difference in C-FOS expression. C-FOS was found in hypothalamic nuclei associated with photic transduction. C-FOS-IR cells were also found in the two known avian hypothalamic oscillators, the LHN and SCN. Arginine-Vasotocin is a neuropeptide involved in numerous bodily and nervous tissue functions, secreted within the hypothalamus and pituitary gland. Immunofluorescent experiments showed marked differences in expression, as different zeitgeber times and between species. This study has improved our understanding of avian circadian systems, providing new insights into the hypothalamic oscillator of a complex circadian organisation.
9
Velusamy, Vijay. "Adapting Remote Direct Memory Access based file system to parallel Input-/Output". Master's thesis, Mississippi State : Mississippi State University, 2003. http://library.msstate.edu/etd/show.asp?etd=etd-11112003-092209.
Testo completo
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Hafeez, Muhammad. "An expandable input/output and graphics system for distributed memory parallel computers". Thesis, University of Bath, 1990. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235808.
Testo completo
11
Burrow, Ryan David. "Enhancing Input/Output Correctness, Protection, Performance, and Scalability for Process Control Platforms". Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/89903.
Testo completoAbstract (sommario):
Most modern control systems use digital controllers to ensure safe operation. We modify the traditional digital control system architecture to integrate a new component known as a trusted input/output processor (TIOP). TIOP interface to the inputs (sensors) and outputs (actuators) of the system through existing communication protocols. The TIOP also interface to the application processor (AP) through a simple message passing protocol. This removes any direct input/output (I/O) interaction from taking place in the AP. By isolating this interaction from the AP, system resilience against malware is increased by enabling the ability to insert run-time monitors to ensure correct operation within provided safe limits. These run-time monitors can be located in either the TIOP(s) or in independent hardware. Furthermore, monitors have the ability to override commands from the AP should those commands seek to violate the safety requirements of the system. By isolating I/O interaction, formal methods can be applied to verify TIOP functionality, ensuring correct adherence to the rules of operation. Additionally, removing sequential I/O interaction in the AP allows multiple I/O operations to run concurrently. This reduces I/O latency which is desirable in many control systems with large numbers of sensors and actuators. Finally, by utilizing a hierarchical arrangement of TIOP, scalable growth is efficiently supported. We demonstrate this on a Xilinx Zynq-7000 programmable system-on-chip device.Master of Science
Complex modern systems, from unmanned aircraft system to industrial plants are almost always controlled digitally. These digital control systems (DCSes) need to be verified for correctness since failures can have disastrous consequences. However, proving that a DCS will always act correctly can be infeasible if the system is too complex. In addition, with the growth of inter-connectivity of systems through the internet, malicious actors have more access than ever to attempt to cause these systems to deviate from their proper operation. This thesis seeks to solve these problems by introducing a new architecture for DCSes that uses isolated components that can be verified for correctness. In addition, safety monitors are implemented as a part of the architecture to prevent unsafe operation.
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Foley, Dawn Christine. "Applications of State space realization of nonlinear input/output difference equations". Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/16818.
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Lao, Tek. "The study on input and output of public health services system in Macao SAR". Thesis, University of Macau, 2005. http://umaclib3.umac.mo/record=b1447708.
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Bui, Trinh. "A study on the Input-Output System for evaluation of infrastructure development in Vietnam". 京都大学 (Kyoto University), 2016. http://hdl.handle.net/2433/204560.
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Muralidhar, Aditya. "Multiple-Input Multiple Output System on a Spinning Vehicle with Unknown Channel State Information". International Foundation for Telemetering, 2012. http://hdl.handle.net/10150/581828.
Testo completoAbstract (sommario):
This paper presents the investigations into the performance of a multiple-input multiple-output (MIMO) system with its transmitters on a spinning vehicle and no available channel state information (CSI) at the transmitter or the receiver. The linear least squares approach is used to estimate the channel and the estimation error is measured. Spinning gives rise to a periodic component in the channel which can be estimated based on the spin rate relative to the data rate of the system. It is also determined that spinning causes the bit error rate of the system to degrade by a few dB.
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Chan, Kristen Y. "MULTIPLE INPUT SINGLE OUTPUT CONVERTER WITH UNEVEN LOAD SHARING CONTROL FOR IMPROVED SYSTEM EFFICIENCY". DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2139.
Testo completoAbstract (sommario):
This paper presents the development and study of multiple-input single-output converter (MISO) for the DC House project that utilizes a controller to maximize the overall converter’s efficiency. The premise of this thesis is to create uneven load current sharing between the converters at different loading conditions in order to maximize the efficiency of the overall MISO converter. The goal is to find a proper ratio of current from each converter to the total load current of the MISO system to achieve the greatest efficiency. The Arduino microcontroller is implemented to achieve this goal. The design and operation of the MISO converter with the proposed controller will be explained in this paper. The design and operation of the converter was tested and verified through simulation in LTSpice in addition to hardware implementation. Different ratios of current from each converter were used to fully test the MISO converter. For the 5A and 6A load current, the maximum efficiencies were reached with the 70% / 30% ratio case, with efficiencies of 94.91% and 95.07%, respectively. For 7A load current, the maximum efficiency was reached with the 60% / 40% ratio case, with an efficiency of 94.59%. The results were then compared with those obtained from the equal current sharing cases. For the cases tested, the efficiency of the unequal current sharing outperforms that obtained from the equal current sharing method.
17
DasGupta, Shamik. "Neural Circuit Analyses of the Olfactory System in Drosophila: Input to Output: A Dissertation". eScholarship@UMMS, 2009. https://escholarship.umassmed.edu/gsbs_diss/438.
Testo completoAbstract (sommario):
This thesis focuses on several aspects of olfactory processing in Drosophila. In chapter I and II, I will discuss how odorants are encoded in the brain. In both insects and mammals, olfactory receptor neurons (ORNs) expressing the same odorant receptor gene converge onto the same glomerulus. This topographical organization segregates incoming odor information into combinatorial maps. One prominent theory suggests that insects and mammals discriminate odors based on these distinct combinatorial spatial codes. I tested the combinatorial coding hypothesis by engineering flies that have only one class of functional ORNs and therefore cannot support combinatorial maps. These files can be taught to discriminate between two odorants that activate the single functional class of ORN and identify an odorant across a range of concentrations, demonstrating that a combinatorial code is not required to support learned odor discrimination. In addition, these data suggest that odorant identity can be encoded as temporal patterns of ORN activity.
Behaviors are influenced by motivational states of the animal. Chapter III of this thesis focuses on understanding how motivational states control behavior. Appetitive memory in Drosophilaprovides an excellent system for such studies because the motivational state of hunger promotes reliance on learned appetitive cues whereas satiety suppresses it. We found that activation of neuropeptide F (dNPF) neurons in fed flies releases appetitive memory performance from satiety-mediated suppression. Through a GAL4 screen, we identified six dopaminergic neurons that are a substrate for dNPF regulation. In satiated flies, these neurons inhibit mushroom body output, thereby suppressing appetitive memory performance. Hunger promotes dNPF release, which blocks the inhibitory dopaminergic neurons. The motivational drive of hunger thus affects behavior through a hierarchical inhibitory control mechanism: satiety inhibits memory performance through a subset of dopaminergic neurons, and hunger promotes appetitive memory retrieval via dNPF-mediated disinhibition of these neurons.
The aforementioned studies utilize sophisticated genetic tools for Drosophila. In chapter IV, I will talk about two new genetic tools. We developed a new technique to restrict gene expression to different subsets of mushroom body neurons with unprecedented precision. We also adapted the light-activated adenylyl cyclase (PAC) from Euglena gracilis as a light-inducable cAMP system for Drosophila. This system can be used to induce cAMP synthesis in targeted neurons in live, behaving preparations.
18
Gerber, Matthew. "FORMALIZATION OF INPUT AND OUTPUT IN MODERN OPERATING SYSTEMS: THE HADLEY MODEL". Doctoral diss., University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3133.
Testo completoAbstract (sommario):
We present the Hadley model, a formal descriptive model of input and output for modern computer operating systems. Our model is intentionally inspired by the Open Systems Interconnection model of networking; I/O as a process is defined as a set of translations between a set of computer-sensible forms, or layers, of information. To illustrate an initial application domain, we discuss the utility of the Hadley model and a potential associated I/O system as a tool for digital forensic investigators. To illustrate practical uses of the Hadley model we present the Hadley Specification Language, an essentially functional language designed to allow the translations that comprise I/O to be written in a concise format allowing for relatively easy verifiability. To further illustrate the utility of the language we present a read/write Microsoft DOS FAT12 and read-only Linux ext2 file system specification written in the new format. We prove the correctness of the read-only side of these descriptions. We present test results from operation of our HSL-driven system both in user mode on stored disk images and as part of a Linux kernel module allowing file systems to be read. We conclude by discussing future directions for the research.Ph.D.
School of Computer Science
Engineering and Computer Science
Computer Science
19
Luh, Guan-Chun. "Identification of an internal combustion engine model by nonlinear multi-input multi-output system identification /". The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487853913100998.
Testo completo
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Ganji, Saichand. "Space-Time Block Coding to Achieve Spatial Diversity in a Multiple Input Multiple Output System". Ohio University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1534432423784957.
Testo completo
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Graichen, Knut. "Feedforward control design for finite time transition problems of nonlinear systems with input and output constraints". [S.l. : s.n.], 2006. http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-30049.
Testo completo
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Nguyen, Chuong Hoang. "Adaptive Predictor-Based Output Feedback Control of Unknown Multi-Input Multi-Output Systems: Theory and Application to Biomedical Inspired Problems". Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/71312.
Testo completoAbstract (sommario):
Functional Electrical Stimulation (FES) is a technique that applies electrical currents to nervous tissue in order to actively induce muscle contraction. Recent research has shown that FES provides a promising treatment to restore functional tasks due to paralysis caused by spinal cord injury, head injury, and stroke, to mention a few. Therefore, the overarching goal of this research work is to develop FES controllers to enable patients with movement-disorder to control their limbs in a desired manner and, in particular, to aid Parkinson's patients to suppress hand tremor. In our effort to develop strategies for muscle stimulation control, we first implement a model-based control technique assuming that all the states are measurable. The Hill-type muscle model coupled with a simplified 2DoF model of the arm is used to study the performance of our proposed adaptive sliding mode controller for simulation purpose. However, in the more practical situations, human limb dynamics are extremely complicate and it is inadequate to use model based controllers, especially considering there are still technical limitations that allow in vivo measurements of muscle activity. To tackle these challenges, we have developed output feedback adaptive control approaches for a class of unknown multi-input multi-output systems. Such control strategies are first developed for linear systems, and then extended to the nonlinear case. The proposed controllers, supported by experimental results, require minimum knowledge of the system dynamics and avoid many restrictive assumptions typically found in the literature. Therefore, we expect that the results introduced in this dissertation can provide a solution for a wide class of nonlinear uncertain systems, with focus on practical issues such as partial state measurement and the presence of mismatched uncertainties.Ph. D.
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saha, dhrubajyoti. "PLAYBACK BUFFERING AND CONTROL FOR LINEAR MULTIPLE INPUT MULTIPLE OUTPUT NETWORK CONTROL SYSTEMS". Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1363411715.
Testo completo
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Lamprecht, Erwin Cornelius. "Multiple-Input Single-Output system identification techniques using the pebble bed modular reactor data / E.C. Lamprecht". Thesis, North-West University, 2004. http://hdl.handle.net/10394/639.
Testo completoAbstract (sommario):
Models are used to describe the dynamic behaviour of a system, to predict
future outputs of the system and are useful when designing certain control
schemes.
An effective control scheme could be used to influence the dynamic behaviour
of a system in such a way that it exhibits more desirable dynamic behaviour.
A control system could be designed to increase the efficiency of a system.
This makes it obvious that accurate models are very useful.
The focus of this study is to use Multiple-Input Single-Output (MISO) system
identification techniques on data obtained from the Flownex simulation
package. These techniques are used to obtain a (MISO) mathematical model
for the Pebble Bed Modular Reactor (PBMR).
MISO system identification techniques are used in this project to study the
effect that the inputs have on each other. This information helps in the
understanding of processes within the system. The reason for studying the
MIS0 systems and not the Single-Input Single-Output (SISO) systems is
because the field of interest focuses on the effects the inputs have on each
other.Thesis (M.Ing. (Computer and Electronical Engineering))--North-West University, Potchefstroom Campus, 2005.
25
Turpin, Michael J. "An investigation of a multiple-input-multiple-output communication system with the Alamouti Space-time code". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Jun%5FTurpin.pdf.
Testo completo
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Pedretti, Davide. "Design and Development of a Multi-Purpose Input Output Controller Board for the SPES Control System". Doctoral thesis, Università degli studi di Padova, 2018. http://hdl.handle.net/11577/3425405.
Testo completoAbstract (sommario):
This PhD work has been carried out at the Legnaro National Laboratories (LNL), one of the four national labs of the National Institute for Nuclear Physics (INFN). The mission of LNL is to perform research in the field of nuclear physics and nuclear astrophysics together with emerging technologies. Technological research and innovation are the key to promote excellence in science, to excite competitive industries and to establish a better society. The research activities concerning electronics and computer science are an essential base to develop the control system of the Selective Production of Exotic Species (SPES) project. Nowadays, SPES is the most important project commissioned at LNL and represents the future of the Lab. It is a second generation Isotope Separation On-Line (ISOL) radioactive ion beam facility intended for fundamental nuclear physics research as well as experimental applications in different fields of science, such as nuclear medicine; radio-pharmaceutical production for therapy and diagnostic. The design of the SPES control system demands innovative technologies to embed the control of several appliances with different requirements and performing different tasks spanning from data sharing and visualization, data acquisition and storage, networking, security and surveillance operations, beam transport and diagnostic. The real time applications and fast peripherals control commonly found in the distributed control network of particle accelerators are accompanied by the challenge of developing custom embedded systems.
In this context, the proposed PhD work describes the design and development of a multi-purpose Input Output Controller (IOC) board capable of embedding the control of typical accelerator instrumentation involved in the automatic beam transport system foreseen for the SPES project.
The idea behind this work is to extend the control reach to the single device level without losing in modularity and standardization.
The outcome of the research work is a general purpose embedded computer that will be the base for standardizing the hardware layer of the frontend computers in the SPES distributed control system.
The IOC board is a Computer-on-Module (COM) carrier board designed to host any COM Express type 6 module and is equipped with a Field Programmable Gate Array (FPGA) and user application specific I/O connection solutions not found in a desktop pc. All the generic pc functionalities are readily available in off-the-shelf modules and the result is a custom motherboard that bridges the gap between custom developments and commercial personal computers.
The end user can deal with a general-purpose pc with a high level of hardware abstraction besides being able to exploit the on-board FPGA potentialities in terms of fast peripherals control and real time digital data processing.
This document opens with an introductory chapter about the SPES project and its control system architecture and technology before to describe the IOC board design, prototyping, and characterization. The thesis ends describing the installation in the field of the IOC board which is the core of the new diagnostics data readout and signal processing system. The results of the tests performed under real beam conditions prove that the new hardware extends the current sensitivity to the pA range, addressing the SPES requirements, and prove that the IOC board is a reliable solution to standardize the control of several appliances in the SPES accelerators complex where it will be embedded into physical equipment, or in their proximity, and will control and monitor their operation replacing the legacy VME technology. The installation in the field of the IOC board represents a great personal reward and crowns these years of busy time during which I turned what was just an idea in 2014, into a working embedded computer today.Questo lavoro di dottorato è stato svolto presso ai Laboratori Nazionali di Legnaro (LNL), uno dei quattro laboratori nazionali dell’Istituto Nazionale di Fisica Nucleare. La missione principale dei LNL è la ricerca di base nella fisica e astrofisica nucleare, sostenuta da un’importante ricerca relativa alle tecnologie emergenti. Le attività di ricerca nell’ambito dell’elettronica e dell’informatica sono essenziali per lo sviluppo del sistema di controllo del progetto SPES (produzione selettiva di specie esotiche). SPES è il progetto piú importante e rappresenta il futuro dei laboratori di Legnaro. Si tratta di una infrastruttura di tipo ISOL (separazione di isotopi in linea), di seconda generazione, il cui obiettivo è quello di generare e accelerare un fascio di ioni radioattivi dedicato alla ricerca nel campo della fisica nucleare, astrofisica nucleare, e ad applicazioni sperimentali in diversi campi della scienza come la produzione di particolari radionuclidi per la medicina nucleare che saranno utili per la diagnosi e la cura di patologie oncologiche. Il progetto del sistema di controllo di SPES sarà basato su tecnologie innovative che consentiranno di monitorare e controllare dispositivi tra loro molto diversi e che eseguono funzioni differenti che vanno dall’acquisizione e visualizzazione dei dati, condivisione dei dati in rete, memorizzazione delle informazioni, operazioni di sorveglianza, diagnostiche e trasporto del fascio. In questo contesto, il dottorato di ricerca proposto descrive il progetto e la realizzazione di una scheda elettronica di controllo (IOC) multifunzione capace di controllare quasi tutte le apparecchiature coinvolte nel trasporto del fascio di ioni radioattivi. L’idea di base di questo lavoro è quella di estendere il controllo a livello di singola apparecchiatura o piccoli gruppi di dispositivi senza rinunciare alla modularità e alla standardizzazione dell’elettronica. Il risultato del lavoro di dottorato è un computer embedded multifunzione progettato con tecnologie all’avanguardia che diventerà lo standard, a livello hardware, su cui si baserà il sistema di controllo distribuito di SPES. Questo controllore multifunzione integra tutte le funzionalità di un computer commerciale e in aggiunta è equipaggiato con un dispositivo programmabile sul campo (FPGA) e alcune periferiche non standard dedicate ad applicazioni di controllo specifiche. L’utente finale potrà sfruttare questa scheda elettronica come un qualunque pc commerciale, oppure, potrà sfruttare le potenzialità della FPGA per le elaborazioni digitali dei dati in tempo reale, per il trasferimento dei dati ad alta velocità su fibra ottica, per chiudere anelli di controllo a larga banda e per avere tempi di risposta agli stimoli in ingresso dal campo deterministici e molto brevi. Il documento apre con una introduzione sul progetto SPES prima di descrivere la progettazione, prototipizzazione e validazione della scheda IOC dando particolare risalto alle attività in cui il mio contributo è stato fondamentale. La tesi si chiude descrivendo l’integrazione della scheda IOC nel sistema di diagnostiche di fascio di SPES. Le misure del profilo di fascio eseguite sul campo e l’estensione della sensibilità di corrente a pochi pA confermano che la scheda elettronica progettata è una soluzione affidabile per standardizzare, a livello hardware, il controllo di diverse apparecchiature nel complesso degli acceleratori del progetto SPES. Questa scheda sostituirà la tecnologia VME in diverse applicazioni e sarà la base su cui implementare un sistema di trasporto di fascio automatico e di qualità, fondamentale per il successo delle attività di ricerca ai LNL. L’installazione in campo della scheda elettronica rappresenta una soddisfazione personale enorme e corona questi anni di duro lavoro durante ai quali ho trasformato quella che nel 2014 era solo un’idea, in un computer embedded pienamente funzionante.
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Gustavsson, Lisa. "The language learning infant : effects of speech input, vocal output, and feedback /". Doctoral thesis, Stockholm : Department of Linguistics, Stockholm University, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-26735.
Testo completo
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Sherwood, Nicholas L. "System input/output changes required to export the Force Requirements Expert System (FRESH) to the Commander in Chief Atlantic Fleet". Thesis, Monterey, California : Naval Postgraduate School, 1988. http://hdl.handle.net/10945/23133.
Testo completoAbstract (sommario):
The intent of this research has been to identify system input and output changes that will be needed to transport FRESH (an employment scheduling expert system) from CINCPACFLT to CINCLANTFLT. A general discussion of expert system theory is presented tying this theory to FRESH wherever possible. Specific uses of FRESH at CINCPACFLT are discussed as well as the present Pacific FRESH input and output requirements. CINCLANTFLT's existing manual method of scheduling is discussed. Finally CINCLANTFLT's proposed changes to the Pacific FRESH inputs and outputs are analyzed. Conclusions identify what FRESH inputs and outputs must be changed prior to FRESH transference to CINCLANTFLT. FRESH is an extremely useful expert system prototype that is used: 1) to generate long range ship's employment schedules--a macro ship's schedule which covers all major events for a ship over a five year period; 2) to monitor changes that impact Fleet readiness and provide viable replacements for units with major casualties; 3) to evaluate the impact of rescheduling ships; and 4) to improve effectiveness of valuable personnel resources. (kr)
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Pandey, Amit Nath. "Fault detection of multivariable system using its directional properties". Texas A&M University, 2004. http://hdl.handle.net/1969.1/3354.
Testo completoAbstract (sommario):
A novel algorithm for making the combination of outputs in the output zero direction of
the plant always equal to zero was formulated. Using this algorithm and the result of
MacFarlane and Karcanias, a fault detection scheme was proposed which utilizes the
directional property of the multivariable linear system. The fault detection scheme is
applicable to linear multivariable systems. Results were obtained for both continuous and
discrete linear multivariable systems. A quadruple tank system was used to illustrate the
results. The results were further verified by the steady state analysis of the plant.
30
Ihekire, Chika Lucy. "Decoupling control of a multiple-input, multiple-output process| Case studies of multi-tank system and distillation column". Thesis, California State University, Long Beach, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10001543.
Testo completoAbstract (sommario):
Multiple Input-Multiple Output (MIMO) systems are very common in process industries, but can be difficult to control. A phenomenon called coupling occurs in a MIMO system when the controller output from one loop acts as disturbance to other control loops. This thesis studies a solution to coupling by introducing a decoupler to a Proportional Integral Differential (PID) control system. A decoupler is a feed-forward controller added to the traditional feedback loop to cancel out loop disturbance. The effect of a decoupler on the performance of control system was explored by comparing (1) the time it takes to achieve control and (2) the combined error incurred during the control process. In this study, a simulation software, LoopPro is used to model and control two systems; multi-tank system and distillation column. Step test data were used to identify process model and a tuning procedure based on Internal Model Control is illustrated. The extent of loop interaction was also analyzed from the Relative Gain Matrix.
31
Allen, Matthew Scott. "Global and Multi-Input-Multi-Output (MIMO) Extensions of the Algorithm of Mode Isolation (AMI)". Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/6877.
Testo completoAbstract (sommario):
A wide range of dynamic systems can be approximated as linear and time invariant, for which a wealth of tools are available to characterize or modify their dynamic characteristics. Experimental modal analysis (EMA) is a procedure whereby the natural frequencies, damping ratios and mode shapes which parameterize vibratory, linear, time invariant systems are derived from experimentally measured response data. EMA is commonly applied in a multitude of applications, for example, to generate experimental models of dynamic systems, validate finite element models and to characterize dissipation in vibratory systems. Recent EMA has also been used to characterize damage or defects in a variety of systems.
The Algorithm of Mode Isolation (AMI), presented by Drexel and Ginsberg in 2001, employs a unique strategy for modal parameter estimation in which modes are sequentially identified and subtracted from a set of FRFs. Their natural frequencies, damping ratios and mode vectors are then refined through an iterative procedure. This contrasts conventional multi-degree-of-freedom (MDOF) identification algorithms, most of which attempt to identify all of the modes of a system simultaneously. This dissertation presents a hybrid multi-input-multi-output (MIMO) implementation of the algorithm of mode isolation that improves the performance of AMI for systems with very close or weakly excited modes. The algorithmic steps are amenable to semi-automatic identification, and many FRFs can be processed efficiently and without concern for ill-conditioning, even when many modes are identified. The performance of the algorithm is demonstrated on noise contaminated analytical response data from two systems having close modes, one of which has localized modes while the other has globally responsive modes. The results are compared with other popular algorithms. MIMO-AMI is also applied to experimentally obtained data from shaker excited tests of the Z24 highway bridge, demonstrating the algorithm's performance on a data set typical of many EMA applications. Considerations for determining the number of modes active in the frequency band of interest are addressed, and the results obtained are compared to those found by other groups of researchers.
32
Medina, B. Enrique Antonio. "Multi-input, multi-output system identification from frequency response samples with applications to the modeling of large space structures". Ohio : Ohio University, 1991. http://www.ohiolink.edu/etd/view.cgi?ohiou1183732644.
Testo completo
33
XU, MENG-XIANG, e 許孟祥. "Distributed input/output processor system". Thesis, 1990. http://ndltd.ncl.edu.tw/handle/39068355325258264480.
Testo completo
34
Xu, Meng-Xiang, e 許孟祥. "Distributed input/output processor system". Thesis, 1990. http://ndltd.ncl.edu.tw/handle/08744363571972495031.
Testo completo
35
Wu, Yueh-Hsun, e 吳岳勳. "Uncooperative-Multi-Cell Multiple-Input-Multiple-Output System". Thesis, 2011. http://ndltd.ncl.edu.tw/handle/73925213408941771174.
Testo completoAbstract (sommario):
碩士長庚大學
電機工程學系
99
Stable and high data throughput is prerequisite to many wireless applications in present. By using antenna arrays at both the transmitter and the receiver, MIMO system can substantially boost its spatial multiplexing gain which implies a linear increment of channel capacity proportional to the number of antennas. However, due to the various transmission environments, the MIMO system is often suffered the rank-deficient problem. For solving the problems mentioned above, in this study, we propose an innovative and practically attainable downlink system with multiple access points and multiple mobile stations each having multiple antennas, referred to as the Uncooperative-Multi-Cell Multiple-Input-Multiple-Output system. In the UMC-MIMO system, each mobile station is allowed to receive several independent data streams from multiple access points. A set of noise-subspace-based receive beamformers is employed at the MS to suppress mutual interferences among data streams from various BSs. Furthermore, the receive beamformers are implemented in an adaptive way by using the GSC structure. With this arrangement, we may have the transmit signal dimension high enough to pre-cancel the Inter-Stream-Interferences (MAI) at each transmit end. As computer simulations, the UMC-MIMO channel can be decomposed into a large number of independent subchannels which significantly increase the channel capacity.Keywords：MIMO, GSC, Interference cancellation
36
Yueh-Feng, Lee. "Intelligent Controller Design of Multi-Input Multi-Output System". 2003. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0009-0112200611291257.
Testo completo
37
Ma, Tsung-Huang. "Analysis and Design of Multi-input Multi-output System". 2000. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0009-0112200611323683.
Testo completo
38
Tao, Der-Fu, e 陶德福. "PIPORS: A PARALLEL INPUT PARALLEL OUTPUT REGISTER SWITCHING SYSTEM". Thesis, 2006. http://ndltd.ncl.edu.tw/handle/68161727824481993074.
Testo completoAbstract (sommario):
博士大同大學
資訊工程學系(所)
94
In order to make data switch speed fast enough for supporting the current communication systems or networks, a high speed switching system with low data loss and low transmission delay is required. Many researchers make use of Statistical Time Division Multiplexing (STDM) technique in the Central Shared Memory Switching System (CSMS) in order to achieve a higher throughput. In the CSMS, the input and output ports share a piece of common memory, where the input data and output data can arrive and possibly be transmitted at the same time respectively. But, the CSMS use multiplexer and demultiplexer at input and output ports respectively for transmitting data. In each time slot the multiplexer and demultiplexer have to process the input data and output data for the input and output ports respectively. Thus, the speed of data transmitted is limited by the number of input and output ports as well as the internal operation speed of the switching system. If the internal operation speed is fixed in switching system, the more input and output ports are included, the lower data transmission speed is observed. Furthermore, if the traffic load should be heavy in one of the input ports, the total shared memory will be occupied by this input port. This fact keeps other input ports from transmitting data and results in possible data loss. Therefore, it can not avoid data contention effectively. Furthermore, the control section needs a great deal of memory to store data address, the memory utilization ratio of storing data will be low. This designing philosophy is really not an appropriate way as subjecting to the demand trend for higher speed switching system in the future. To overcome the drawbacks of the switching system mentioned above, a new architecture of a Parallel Input Parallel Output Register Switching System (PIPORS) is proposed in this dissertation. The PIPORS is based on the interconnection of the n small distributed/parallel Shared Memory Modules (SMMs) and an n�en Shift Register Switch Array (SRSA), and it is connected in a ring topology. The operations can be performed on n input/output ports simultaneously. By adopting the distributed data storage and data can parallel input/parallel output in the n�en PIPORS simultaneously. Therefore, the switching system contention will effectively be reduced and the internal execution speed must not be n times faster than the speed of input/output port. The performance of PIPORS will be effectively promoted. Nowadays, there are many communication system or network applications in which the required size of the switching system is larger than the proposed n�en PIPORS. Therefore, one of the important requirements for designing a switching system is its growability. The architecture should permit modular growth of its size from a small number of ports to a very large switching system. It is also desired that this growth does not result in performance degradation significantly and can meet the requirement of reliability at each stage of the expansion. In this dissertation, there are three types of expansion method to be proposed: (1) input/output port size expansion method, (2) memory expansion method, and (3) combined input/output port size and memory expansion method. Finally, performance evaluation of a switching system depends on various parameters: total memory required, throughput, data loss probability, and average data delay. Among these, data loss probability is one of the most important factors, and depends strongly on network traffic and buffering method. In our simulation, the SMPL (SiMulation Program Language) is adopted to simulate the four different switching systems, Link-list based CSMS, Hybrid CSMS, CAM based CSMS, and PIPORS. According to the results from different simulations as conducted, PIPORS has the merits of the best throughput, the least data loss probability and the shortest average data delay. Therefore, PIPORS is believed to be the most efficient among these switching systems.
39
Lee, Yueh-Feng, e 李岳峰. "Intelligent Controller Design of Multi-Input Multi-Output System". Thesis, 2003. http://ndltd.ncl.edu.tw/handle/00348789864396832898.
Testo completoAbstract (sommario):
碩士元智大學
電機工程學系
91
This thesis presents two intelligent controller designs for multi-input multi-output (MIMO) systems. First, for the linearized MIMO systems, the adaptive recurrent fuzzy neural network controller design method is developed to deal with the plant parameter variations and coupling problems. Then, based on the variable structure sliding mode, an adaptive fuzzy sliding mode controller is designed to deal with MIMO nonlinear systems. For these control system design, the adaptive laws of the controller parameters are derived based on Lyapunov function, so that the system stability can be guaranteed. Finally, several application examples are simulated to illustrate the effectiveness of the proposed design methods.
40
Tsung-Huang, Ma, e 馬宗煌. "Analysis and Design of Multi-input Multi-output System". Thesis, 2000. http://ndltd.ncl.edu.tw/handle/75018827655269666884.
Testo completoAbstract (sommario):
碩士元智大學
電機工程研究所
88
In first part of this thesis, we use the gain-phase margin tester technique combine with the stability-equations method and the parameter plane technique to analyze gain-margins and phase-margins of MIMO system. Control systems expressed both by block diagrams and by state equations are considered. The physical meanings of gain-margins and phase-margins of MIMO systems are presented first, and then the effects due to time-delays are studied. In the second part, by applying the sequential loop closing approach, the mixed H-parameter space method is extended to MIMO systems. A diagonal stabilizing controller is designed by the proposed approach, with the order lower than those obtained by the H-optimal control method. The effectiveness of the proposed design methods are illustrated by examples.
41
Cheng-YuPeng e 彭成宇. "Double-input single-output transmission system for electric bicycle". Thesis, 2014. http://ndltd.ncl.edu.tw/handle/00201025531262915270.
Testo completoAbstract (sommario):
碩士國立成功大學
機械工程學系
102
Prevailing electric bicycles in the market using independent systems with pedal input and motor input are limited by the capacity of the battery that lead to insufficient endurance of electric bicycles. This paper will design a double-input single-output transmission system for electric bicycle. The pedal force combines with the driving force of the motor as an output via a reducer that reduce the current consumption of the motor . This transmission system will enhance the endurance of the electric bicycles and reduce pedaling burden of the rider. After the completion of the transmission system in conjunction with bicycle, conduct the road testing. Record the speed of the bicycle, the rotational speed of the crank and the current consumption of the motor. Finally, analyze the power consumption differences between this transmission system and general electric bicycle and the relationship between the rotational speed of motor and that of crank.
42
Mewburn, Michael. "Multiple input multiple output channel measurements and system performance". Thesis, 2010. https://vuir.vu.edu.au/15772/.
Testo completoAbstract (sommario):
Existing wireless links using a single antenna element at the transmitter and receiver are heavily influenced by the multipath scattering arising from objects in the transmission environment. Unlike conventional systems, a concept referred to as Multiple-Input Multiple-Output or MIMO not only thrives under multipath conditions but also has the potential to allow for substantial increases in capacity. MIMO systems use a combination of multiple antenna arrays at the transmitter and receiver in conjunction with dedicated Digital Signal Processing (DSP). Before MIMO systems are designed and deployed, a database of typical propagation measurements is required to confirm theoretical predictions with reality. The design, development and use of specialised measurement equipment to accurately establish an indoor MIMO measurement database is presented in this thesis.
43
Harris, Amanda Lynne. "Design of Controllers for a Multiple Input Multiple Output System". Thesis, 2012. http://hdl.handle.net/1969.1/ETD-TAMU-2012-05-11104.
Testo completoAbstract (sommario):
A method of controller design for multiple input multiple output (MIMO) system is needed that will not give the high order controllers of modern control theory but will be more systematic than the “ad hoc” method. The objective of this method of design for multiple input multiple output systems is to find a controller of fixed order with performance specifications taken into consideration. An inner approximation of the stabilizing set is found through the algorithm discussed in Keel and Bhattacharyya’s "Fixed order multivariable controller synthesis: A new algorithm." The set satisfying the performance is then approximated through one of two algorithms; a hybrid of two optimization algorithms or the grid algorithm found in Lampton’s "Reinforcement Learning of a Morphing Airfoil-Policy and Discrete Learning Analysis." The method is then applied to five models of four aircraft; Commander 700, X-29, X-38, and F-5A using controllers of first and second orders.
44
Tseng, Po-Shun, e 曾柏舜. "Blind System Identification for Multiple-Input Multiple-Output Memoryless Channel". Thesis, 2004. http://ndltd.ncl.edu.tw/handle/09344907275266361423.
Testo completoAbstract (sommario):
碩士國立清華大學
通訊工程研究所
91
Chi et al. proposed a fast kurtosis maximization algorithm (FKMA) and a turbo source separation algorithm (TSSA), respectively have been widely used for blind source separation. Based on FKMA and TSSA, respectively we drive two rela- tionships which holds true for finite SNR in time domain with temporally independent or temporally colored source signal. Then based on the two relationships, two iterative blind system identification (BSI) algorithms for multiple-input multiple-output system are proposed in this thesis, which work well with better performance than Tugnait's input-output cross-correlation (IOCC) method and some existing second-order stati- stics (SOS) based algorithms. Besides, the proposed two iterative BSI algorithms dose not require any condition on the spectra of the sources signals and is thus more flexi- ble then SOS based algorithms. Some simulation results are presented to support the efficacy of the proposed BSI algorithms.
45
蔣介文. "The fault-tolerant multiprocessor system design-input and output server". Thesis, 1988. http://ndltd.ncl.edu.tw/handle/71070611919200646593.
Testo completo
46
Medina, Mario Ruben. "A self-tuning disk striping system for parallel input/output /". 2007. 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:3301193.
Testo completoAbstract (sommario):
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2007.Source: Dissertation Abstracts International, Volume: 69-02, Section: B, page: 1112. Adviser: Daniel A. Reed. Includes bibliographical references (leaves 118-126) Available on microfilm from Pro Quest Information and Learning.
47
Aedo, Ortiz Darió M. "A mechanized harvesting system simulation : input, output, limitations and capabilities /". 1994. http://hdl.handle.net/1957/9167.
Testo completo
48
Buck, Ulrich. "Software development for single input single output control system design". 1985. http://catalog.hathitrust.org/api/volumes/oclc/13339477.html.
Testo completoAbstract (sommario):
Thesis (M.S.)--University of Wisconsin--Madison, 1985.Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 146-149).
49
郭孟宗. "Energy Use in the Taiwan Food System—Input-Output Analysis". Thesis, 2011. http://ndltd.ncl.edu.tw/handle/50716221561313631641.
Testo completo
50
Guo-ShengLin e 林國聖. "Improvement of Isolations of Multiple Input Multiple Output Antenna System". Thesis, 2018. http://ndltd.ncl.edu.tw/handle/h96s97.
Testo completoAbstract (sommario):
博士國立成功大學
微電子工程研究所
106
Currently, wireless communication networks are developing rapidly, and the trends for mobile products include being creative and innovative. There is a need for mobile communication products to be compact in size, light weight, low-cost, multi-function, and characterized by multi-band operation. Additionally, it is also important to have a high wireless communication data rate. However, the above conditions and stricter specifications make designing products more difficult. In a wireless communication system, antennas are important transmitters/receivers. Emerging applications such as wireless communication protocols continue to challenge RF/microwave antennas with ever more stringent requirements, including being high performance, compact, light, low-cost, and multi-band. Thus, determining how to design a multi-band, miniaturized antenna is a big challenge. Furthermore, the inside of compact electronic products has many function devices that increase the electromagnetic interference (EMI) between interior and exterior signals, resulting in a need to research the power absorption in electronic devices and transmission lines. Due to the evolution of high speed wireless transmission, the standards of front antennas have become stricter, so single input single output (SISO) systems are gradually being replaced by multiple input multiple output (MIMO) systems, resulting in interference between the antennas and limiting the transmission speed at the same time. Thus, improvement in the degree of interference between two or more antennas is a popular topic now. First, an LTE antenna design structure is proposed and easily fabricated using a printed circuit board (PCB) process. The properties of the proposed monopole antenna are a Long Term Evolution (LTE) and wireless wide area network (WWAN) that can be applied in mobile equipment. The designed method is a combination of one monopole that is direct-fed within two branches and a couple-fed monopole with an impedance matching metal strip that connects to the ground and operation bands based on 6-dB return lossesof640-875 MHz and 1255-2815 MHz in the lower and higher bands, respectively. This method conforms with the fourth generation (4G) and WWAN operation bands. Simulations and measurements of monopole antenna return loss, radiation pattern, gain and efficiency, etc. are used to prove that the characteristics of this method are good. In the second section, we discuss the problems with the EMI of products. In this dissertation, a conductivity film is proposed to be a power absorber, which when added in the circuits, is like a low-pass filter. The conductivity film material is carbon black whose properties are expected to exhibit high resistance, and a low temperature, low cost process, especially due to the proportion of carbon black used to control the starting absorption frequency. The measured results indicate that the carbon black film absorbs the high frequency power effectively. In the third section, the improvement in the isolation of the MIMO system is discussed. We propose a novel method taking advantage of the absorbability of the carbon black film by adding a carbon black film in the MIMO system. Carbon black film absorbs interference noise and proves that the measured S-parameter, radiation pattern, peak gain, efficiency, and envelope correlation coefficients, etc. meet the commercial standards.