Rozprawy doktorskie na temat „Digital control systems”
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Behzadi, M. A. "True digital control of greenhouse systems". Thesis, Lancaster University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236319.
Pełny tekst źródłaToriumi, Fabio Yukio. "Controle digital de uma planta giroscópio". Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3139/tde-21122016-090720/.
Pełny tekst źródłaThis dissertation presents the mathematical modeling of a control moment gyroscope (CMG) and applies digital control techniques for its attitude control. CMGs are important actuators for bodies attitude control in the space, such as satellites and space vehicles. The system modeling is developed with the Lagrangian mechanics and a digital proportionalintegral- derivative (PID) and a digital linear-quadratic regulator (LQR) control techniques are studied and applied to a decoupled system and coupled systems with minimum and non-minimum phases. Simulation tests with the non-linear plant model and experimental tests with the real plant are done in order to validate the control techniques. Then, positive results are reached with both studied techniques, excepting in the coupled system with non-minimum phase, in which one technique was not able to control it.
Bolton, Alan Graham. "Digital filters and cascade control compensators /". Title page, contents and abstract only, 1990. http://web4.library.adelaide.edu.au/theses/09PH/09phb694.pdf.
Pełny tekst źródłaWhiting, Ian Martin. "Closed loop digital control of electrohydraulic systems". Thesis, University of Bath, 1987. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375516.
Pełny tekst źródła鄧國瀚 i Kwok-hon Tang. "Digital control enhancement of triac cycloconverter systems". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1987. http://hub.hku.hk/bib/B31231354.
Pełny tekst źródłaTang, Kwok-hon. "Digital control enhancement of triac cycloconverter systems /". [Hong Kong : University of Hong Kong], 1987. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12227808.
Pełny tekst źródłaLuo, F. L. "Digital control of power semiconductor converters". Thesis, University of Cambridge, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383314.
Pełny tekst źródłaNocetti, Demetrio Fabian Garcia. "Parallel processing in digital flight control". Thesis, Bangor University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278518.
Pełny tekst źródłaPlummer, Andrew Robert. "Digital control techniques for electro-hydraulic servosystems". Thesis, University of Bath, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280263.
Pełny tekst źródłaMcConnell, George. "Digital bank-to-turn control and guidance". Thesis, Queen's University Belfast, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303013.
Pełny tekst źródłaCraig, Robert George Alexander. "Implementation, control and programming of digital optical systems". Thesis, Heriot-Watt University, 1991. http://hdl.handle.net/10399/879.
Pełny tekst źródłaElphick, Jonathan Richard. "Fault tolerance in rotorcraft digital flight control systems". Thesis, University of York, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296389.
Pełny tekst źródłaSchipman, Kurt. "Control systems and algorithms for active filters". Thesis, Staffordshire University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360218.
Pełny tekst źródłaPetropoulakis, L. "Design of digital trajectory tracking systems for robotic manipulators". Thesis, University of Salford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384976.
Pełny tekst źródłaStroph, Ralf. "Acceptance test design for fault tolerant, digital control systems". Thesis, University of York, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298586.
Pełny tekst źródłaAl-Sadigi, G. M. "Self-tuning digital controllers for servo systems". Thesis, Loughborough University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377008.
Pełny tekst źródłaBarton, Andrew Dennis. "Control of high speed chain conveyor systems". Thesis, University of Southampton, 1999. https://eprints.soton.ac.uk/421466/.
Pełny tekst źródłaVan, Papendorp J. F. "Digital control of line-interactive UPS". Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6537.
Pełny tekst źródłaENGLISH ABSTRACT: The digital control of UPS systems has been difficult in the past due to a lack of DSP technology. It was for this reason not possible to establishing the necessary control to regulate the voltages and currents of the UPS systems. Recent advances in DSP technology have however provided the means of establishing central control of the UPS system as well as incorporating more complex closed-loop control algorithms by utilising a single floating-point DSP. Closed-loop control strategies are investigated and the central control of a line-interactive UPS is established in this study. Both the status of the physical system as well as various system parameters are controlled. The system both regulates and charges the storage batteries when the main utility supply is maintained. In the event that the utility fails, the converter instantaneously changes power flow towards the load with the aim of maintaining an uninterrupted voltage supply. Several closed-loop deadbeat based control strategies are investigated for the regulation of the inductor current. A solution for the regulation of the DC-link is also developed and implemented. Furthermore, an intensive study is done on the regulation of the voltage supplied to the load in the event that the utility supply fails. The investigation is initially approached by considering classical control theory. Although these control strategies provided sufficient results, a predictive strategy that is based on the physical conditions of the switching converter is finally investigated to establish closed loop control of the output voltage. This resulted in a high-bandwidth voltage controller capable of maintaining control under a wide-array of load conditions.
AFRIKAANSE OPSOMMING: Die digitale beheer van UPS stelsels was moeilik in the verlede as gevolg van 'n gebrek aan DSP tegnologie. Dit was vir hierdie rede nie moontlik om beheer te kon bewerkstelling ten einde die spannings and strome in the UPS stelsels te kon reguleer nie. Onlangse vordering in DSP tegnologie het egter dit moontlik gemaak om sentrale beheer van die UPS stelsel te bewerkstellig sowel as om meer komplekse geslote lus beheer algoritmes te inkorporeer met behulp van 'n enkele DSP. Geslote lus beheer strategiëe word ondersoek en die sentrale beheer van die line-interaktiewe UPS word bewerkstellig in hierdie studie. Beide die huidige toestand van die fisiese stelsel sowel as die verskeie parameters word beheer. Die stelsel beide laai en reguleer die batterye terwyl die hooftoevoer onderhou word. In die geval dat die hooftoevoer faal, word die omsetter se rigting van drywingsvloei verander om die las te voorsien van 'n ononderbroke spannings toevoer. Verskeie geslote-lus “deadbeat” beheer strategiëe word ondersoek vir die regulasie van die induktor stroom. 'n Oplossing vir die regulasie van die GS-koppervlak word ook ontwikkel en geïmplementeer. Verder word 'n intensiewe studie gedoen op regulasie van die spanning wat aan die las gevoer word in die geval dat die hooftoevoer faal. Hierdie ondersoek word aanvanklik benader deur klassieke beheer teorie te bestudeer. Alhoewel hierdie beheer strategiëe voldoene resultate gebied het, was 'n voorspel beheerstrategie gebaseer op die fisiese toestand van die omsetter finaal ondersoek. Die resultaat is 'n hoë-bandwydte spannings beheerder wat daartoe instaat is om beheer te handhaaf onder 'n verskeidenheid van lastoestande.
Wang, Xuan. "Verification of digital controller implementations /". Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd1073.pdf.
Pełny tekst źródłaGawlik, Aaron John. "Applied high resolution digital control for universal precision systems". Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/44886.
Pełny tekst źródłaIncludes bibliographical references (p. 223-225).
This thesis describes the design and characterization of a high-resolution analog interface for dSPACE digital control systems and a high-resolution, high-speed data acquisition and control system. These designs are intended to enable higher precision digital control than currently available. The dSPACE system was previously designed within the PMC Lab and includes higher resolution A/D and D/A interfaces than natively available. Characterization on the custom A/D channel demonstrates 20.1 effective bits, or a 121 dB dynamic range, and the custom D/A channel demonstrates 15.1 effective bits, or a 91 dB dynamic range. This compares to a 15.7 effective bits on the A/D dSPACE channel and 12.3 effective bits on the D/A dSPACE channel. The increased resolution is attained by higher performance hardware and oversampling and averaging the A/D channel. The sampling rate is limited to 8 kHz. The high-resolution, high-speed data acquisition and control system can sample two A/D channels at 2.5 MHz and display/save an acquired one second burst. The A/D channel is characterized at 109 dB dynamic range with a grounded input and 96 dB dynamic range, or 0.74 nm RMS over a 50 [mu]m range, with a fixtured capacitive probe. Acquisition at 2.5 MHz and closed-loop control at 625 kHz sampling rate is implemented on a National Instruments FPGA. The A/D circuit was designed and built on a custom printed circuit board around the commercially available AD7760 sigma-delta converter from Analog Devices and includes fully differential ±10 V inputs, a dedicated microcontroller to provide an initialization sequence, and digital galvanic isolation. LabVIEW FPGA code demonstrates arbitrary transfer function control implementation.
(cont.) The digital platform is applied to a 1-DOF positioner to demonstrate 0.10 nm RMS control over a 10 [mu]m mechanical range when filtered to the 1.5 kHz closed-loop bandwidth, which is limited by the A/D converter architecture propagation delay.
by Aaron John Gawlik.
S.M.
Celanovic, Ivan. "A Distributed Digital Control Architecture for Power Electronics Systems". Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/34998.
Pełny tekst źródłaMaster of Science
Hicks, Dawn L. "Optimal design of digital model-following systems". Thesis, University of Salford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284423.
Pełny tekst źródłaMcArdle, M. G. "A digital controller for the small salient-pole alternator". Thesis, Queen's University Belfast, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269154.
Pełny tekst źródłaMerzougui, T. "Design of digital controllers for irregular linear multivariable plants". Thesis, University of Salford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308206.
Pełny tekst źródłaIyer, Gopal Balakrishnan. "Digital communication and control circuits for 60ghz fully integrated CMOS digital radio". Thesis, Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/39589.
Pełny tekst źródłaClark, Kenneth A. "Modeling single-event transients in complex digital systems". Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02Jun%5FClark%5FKenneth%5Fphd.pdf.
Pełny tekst źródłaBainbridge, Christopher James. "Digital control networks for virtual creatures". Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/4812.
Pełny tekst źródłaGrimes, Todd S. "Adaptive Power Analog-to-Digital Interface for Digital Systems". Wright State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1483366560887816.
Pełny tekst źródłaWong, Timothy M. H. "Digital implementation of a feedback controller for scanning probe microscopy". Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240094.
Pełny tekst źródłaAl-Fakhri, Loui Ali Hussain. "ADPCM distortion of digital data transmitted at 9.6 kbit/s". Thesis, Loughborough University, 1989. https://dspace.lboro.ac.uk/2134/10337.
Pełny tekst źródłaHuynh, Nguyen. "Digital control and monitoring methods for nonlinear processes". Link to electronic thesis, 2006. http://www.wpi.edu/Pubs/ETD/Available/etd-100906-083012/.
Pełny tekst źródłaKeywords: Parametric optimization; nonlinear dynamics; functional equations; chemical reaction system dynamics; time scale multiplicity; robust control; nonlinear observers; invariant manifold; process monitoring; Lyapunov stability. Includes bibliographical references (leaves 92-98).
Broos, Elizabeth. "Information, communication and technological competencies in a digital working environment a case study in the Netherlands Defence Organization /". Pretoria : [s.n.], 2007. http://upetd.up.ac.za/thesis/available/etd-06182008-115804/.
Pełny tekst źródłaQuibell, Jason. "Digital control of a Class-D Audio Amplifier". Thesis, Cape Peninsula University of Technology, 2011. http://hdl.handle.net/20.500.11838/1116.
Pełny tekst źródłaModern technologies have led to extensive digital music reproduction and distribution. It is fitting then that digital audio be amplified directly from its source rather than being converted to an analogue waveform before amplification. The benefits of using a digital controller for audio processing include being able to easily reconfigure the system and to add additional functions at a later stage.Digital audio is primarily stored as Pulse Code Modulation (PCM) while Pulse Width Modulation (PWM) is the most popular scheme used to drive a class-D amplifier. The class-D amplifier is selected in many applications due to its very high energy efficiency. Conventional PCM to PWM conversion is inherently nonlinear. Various interpolation schemes are presented in this research project which help to address the nonlinearity.Digitally generated PWM has a limited resolution which is constrained by the system clock. This thesis presents noise shaping techniques which increase the effective resolution of the PWM process without having to use an excessively high system clock. Noise shaping allows a low resolution modulator to be used to reproduce high resolution audio.
Vargas, Henik Vladimir. "Robust damping of a directional microphone using digital feedback". Diss., Online access via UMI:, 2008.
Znajdź pełny tekst źródłaIncludes bibliographical references.
Kozak, Kristopher Charles. "Dynamic analysis of parallel manipulators and digital inut shaper computation using linear optimization". Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/16378.
Pełny tekst źródłaWard, Ronald P. "Software Considerations in the Control of Digital Communications Switching Systems". International Foundation for Telemetering, 1992. http://hdl.handle.net/10150/611926.
Pełny tekst źródłaToday's complex implementations of integrated packet and circuit switched digital communications networks demand that the software used for controlling these systems be robust, fault tolerant, and capable of runtime recovery from all but the most severe of operational errors. The typical modern switched communications system includes the use of multiple circuit switches, each with potentially thousands of end-user interfaces. Further, these switches are often inter-connected to each other via high-capacity trunks. A single connection between two end-user interfaces often traverses a number of intermediate circuit switches in order to effect the end-to-end communications desired. In this complex, distributed environment, the establishment and dissolution of end-to-end user connections involve far more than simple binary connection states indicating the existence, or non-existence, of a link. More commonly, a single end-to-end connection requires multiple node links across multiple, heterogeneous interfaces. The command and control software used to establish, monitor, and dissolve these connections must be capable of dealing with errors which arise at any node along the way in a consistent and reliable manner. Most critically, the system software must be capable of maintaining an accurate, multi-level mapping of distributed resources' availability, allocation, and status. Further, the software must have the capability of "healing itself" during operational run-time when it can, and of accurately reporting the nature of inconsistencies caused by anomalous events that cannot be fixed on the fly. The Edwards Digital Switch (EDS), developed by CSTI, provides a case study of possible solutions, and potential pitfalls, that can arise in the design, development, and implementation of the controlling software in today's dynamic, distributed communications' system architectures.
Abbassi, Hadj Ahmed. "Control of an electromagnetic suspension system using TMS 32020 digital signal processor". Thesis, University of Reading, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303466.
Pełny tekst źródłaLiao, Hao Hsiang. "Digital Timing Generator for Control of Plasma Discharges". Thesis, Linköpings universitet, Elektroniska Kretsar och System, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-161090.
Pełny tekst źródłaAbidin, Zainal. "Design of digital high-accuracy trajectory tracking systems for multivariable plants". Thesis, University of Salford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304589.
Pełny tekst źródłaBorairi, M. "Genetic design of tunable digital set-point tracking controllers for linear multivariable plants". Thesis, University of Salford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262674.
Pełny tekst źródłaCarter, Clinton E. "Susceptibility of a digital turbine control system to IEEE 802.11 compliant emissions". Thesis, University of North Texas, 2003. https://digital.library.unt.edu/ark:/67531/metadc4433/.
Pełny tekst źródłaChrysanthou, A. "Digital control of linear multivariable plants with input and output time delays". Thesis, University of Salford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.353969.
Pełny tekst źródłaMaggard, William P. "Adaptive control of flexible systems using self-tuning digital notch filters". Ohio : Ohio University, 1987. http://www.ohiolink.edu/etd/view.cgi?ohiou1183056097.
Pełny tekst źródłaHossain, Mohammed Alamgir. "Digital signal processing and parallel processing for real-time adaptive noise and vibration control". Thesis, University of Sheffield, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.484164.
Pełny tekst źródłaOliver, Michael Andrew. "Theory and application of error analysis for improving the performance of practical digital controllers". Thesis, Loughborough University, 1997. https://dspace.lboro.ac.uk/2134/13882.
Pełny tekst źródłaWang, Zhongli. "New methods for the direct digital control of discrete-time systems". Thesis, Lancaster University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383582.
Pełny tekst źródłaDworak, Joseph A. (Joseph Alan). "Digital control of the hydraulic actuators of an adaptive suspension vehicle /". The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487259125220105.
Pełny tekst źródłaGee, Alan David. "Digital automatic flight control systems for advanced rotorcraft : an analysis framework". Thesis, University of York, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341474.
Pełny tekst źródłaPitsillides, Andreas, i Andreas Pitsillides@ucy ac cy. "Control structures and techniques for broadband-ISDN communication systems". Swinburne University of Technology, 1993. http://adt.lib.swin.edu.au./public/adt-VSWT20060321.132650.
Pełny tekst źródłaGurrie, Thomas M. "The application of system modelling to digital electronic systems for active control of acoustic noise". Thesis, Royal Holloway, University of London, 1988. http://repository.royalholloway.ac.uk/items/57091fab-773a-4d31-b806-77ba916cb6f9/1/.
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