Dissertations / Theses on the topic 'Testing and simulation'
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Nybacka, Mikael. "Distributed vehicle testing : dynamic simulation for automotive winter testing." Licentiate thesis, Luleå : Luleå University of Technology, 2007. http://epubl.ltu.se/1402-1757/2007/28/.
Full textLe, Gaux Clyde R. III. "STARE CubeSat Communications Testing, Simulation and Analysis." Thesis, Monterey, California. Naval Postgraduate School, 2012. http://hdl.handle.net/10945/17397.
Full textThe Space-based Telescope for the Actionable Refinement of Ephemeris (STARE) CubeSat will play an important role in contributing to this nations space situational awareness (SSA), perhaps one day becoming an integral part of the space surveillance network (SSN) to track orbital debris and satellites, both active and inactive. STARE is a pathfinder mission that is expected to show that CubeSat assets can improve the accuracy of space debris ephemeris data and help national assets avoid conjunction. However, STARE cannot do its job if it cannot communicate effectively with the ground architecture. Knowing the functionality of the on board radio is essential to knowing the capabilities and limitations of the spacecraft. STARE is designed to communicate with the Mobile CubeSat Command and Control (MC3) ground station at the Naval Postgraduate School for data collection and analysis. This thesis shows testing and results, analysis and simulation of the STARE radio and the MC3 ground stations.
Malcolm-Smith, Susan. "Testing Revonsuo's Threat simulation theory of dreaming." Master's thesis, University of Cape Town, 2005. http://hdl.handle.net/11427/12414.
Full textRevonsuo's Threat Simulation Theory of dreaming asserts that dreaming was selected during human evolution because it has the adaptive function of providing a threat-free context in which threat perception and avoidance can be rehearsed. This study aimed to test the prediction that the threat simulation mechanism will activate differently depending on waking exposure to ecologically valid threat cues. It also compared the impact of waking threat events on dream content with that of waking positive events, as TST asserts that only threat impacts on dream content. Data was collected from three contexts: a high threat context (the Western Cape in South Africa; n=208); a medium threat context (a black southern university in the US; n=34); and a low threat context (North Wales; n=116). Questionnaires included a Most Recent Dream report, details of exposure to walking threatening and positive events, and dreams of such events.
Du, Lifang. "A simulation study of global model testing." View electronic thesis (PDF), 2009. http://dl.uncw.edu/etd/2009-3/rp/dul/lifangdu.pdf.
Full textNoone, Estelle S., Kevin Parker, and Janice Swope. "DEVELOPMENT OF PC-BASED SPACECRAFT SIMULATOR FOR EOS GROUND SYSTEM TESTING." International Foundation for Telemetering, 1999. http://hdl.handle.net/10150/606810.
Full textSpacecraft communication simulators are extremely useful for integration and testing of spacecraft control centers and supporting ground systems. To reduce development costs, a Windows NT PC-based simulation system is being developed to support testing for upcoming NASA missions. The spacecraft simulation suite of tools integrates modules within a core infrastructure and is customized to meet mission unique specifications not met by the baseline system.
Gonen, Ofer. "Sequential multiple comparison testing for budget-limited applications." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Dec%5FGonen.pdf.
Full textCedrini, Luca. "Time Sensitive Networks: analysis, testing, scheduling and simulation." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/22305/.
Full textFettig, Heiko M. "Design, simulation and testing of micromachined flexible joints." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ63476.pdf.
Full textWhaballa, Ala. "Reservoir simulation and well testing of compartmentalized reservoirs." Thesis, Heriot-Watt University, 1991. http://hdl.handle.net/10399/1493.
Full textPeterson, Andrew William. "Simulation and Testing of Wave-Adaptive Modular Vessels." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/54555.
Full textPh. D.
Acevedo-Hueso, Luis-Francisco. "Optical simulation and testing of an optical encoder." Thesis, Heriot-Watt University, 2015. http://hdl.handle.net/10399/2977.
Full textTaylor, Rick, Neal Redmond, and Jeff Balding. "Temporal, Spectral, and Spatial Treat Simulation Using a Towed Airborne Plume Simulator (TAPS)." International Foundation for Telemetering, 2009. http://hdl.handle.net/10150/606036.
Full textEfforts are underway to develop Infrared countermeasure (IRCM) systems to defend aircraft against IR guided surface-to-air (SAM) and air-to-air (AAM) missiles. One such system is the Large Aircraft Infrared Counter Measure (LAIRCM) which employs temporal, spatial, and spectral missile warning techniques. There is no current technique however, for installed system flight testing of such countermeasures in a realistic temporal, spatial, and spectral environment. This paper is an introduction to the Towed Airborne Plume Simulator (TAPS), a system designed to address this test shortfall. The TAPS operational concept is described as well as techniques for simulating missile signatures.
Lewsey, James Daniel. "Hypothesis testing in unbalanced experimental designs." Thesis, Glasgow Caledonian University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322213.
Full textPeyrow, Farzad. "Field testing of an agricultural land drainage computer model." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66172.
Full textWeekley, Christopher D. "Aircraft simulation validation using an instrumental variable approach." Thesis, Virginia Tech, 1992. http://hdl.handle.net/10919/41517.
Full textMaster of Science
Vedder, Benjamin. "Testing Safety-Critical Systems using Fault Injection and Property-Based Testing." Licentiate thesis, Högskolan i Halmstad, Centrum för forskning om inbyggda system (CERES), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-28173.
Full textThis research has been funded through the PROWESS EU project (Grant agreement no: 317820), the KARYON EU project (Grant agreement no: 288195) and through EISIGS (grants from the Knowledge Foundation).
PROWESS
KARYON
Truong, Henry. "SIMULATION FOR COMMERCIAL DRIVER LICENSE THIRD PARTY TESTER TESTING." Doctoral diss., University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3480.
Full textPh.D.
Other
Engineering and Computer Science
Modeling and Simulation PhD
Spinks, Stephen James. "Fault simulation for structural testing of analogue integrated circuits." Thesis, University of Hull, 1998. http://hydra.hull.ac.uk/resources/hull:8047.
Full textHay, Neil Conway. "The simulation of random environments for structural dynamics testing." Thesis, Edinburgh Napier University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328063.
Full textVoutsis, Kimon. "Human motion modelling for simulation testing of GNSS equipment." Thesis, University College London (University of London), 2017. http://discovery.ucl.ac.uk/1570999/.
Full textLouw, Nicolaas Hendrik. "Real time full circuit driving simulation system." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/50077.
Full textENGLISH ABSTRACT: The requirements regarding the quality of engines and vehicles have increased constantly, requiring more and more sophisticated engine testing. At the same time, there is a strong demand to reduce lead time and cost of development. For many years steady state engine testing was the norm using standard principles of power absorption. Since the mid 1980's increasing importance has been attached to the optimisation of transient engine characteristics and the simulation of dynamic real world driving situations on engine test stands. This has led to the use of bi-directional DC or AC regenerative dynamometers a practice now known as dynamic engine testing. Interfacing a computer with vehicle simulation software to an engine on a dynamic test stand and using "hardware in the loop" techniques, enables the simulation of real world driving situations in a test facility. In dynamic engine testing a distinction can be made between simulation testing and transient testing. In simulation testing the set point values are predetermined whereas in transient testing a model generates set point values in real time. Speeds and loads are calculated in real time on the basis of real time measurements. The model can be in the form of a human or driver simulation. This project involved the application of dynamic engine testing to simulating a racing application. It is termed Real Time Full Circuit Driving Simulation System due to the simulation of a race car circling a race track, controlled by a driver model and running the engine on a dynamic test bench in real time using "hardware in the loop" techniques. By measuring the simulated lap times for a certain engine configuration on the test bench in real time, it is possible to select the optimal engine set-up for every circuit. The real time nature of the simulation subjects the engine on the test bench to similar load and speed conditions as experienced by its racing counterpart in the race car yielding relevant results. The racing simulation was achieved by finding a suitable dynamic vehicle model and a three dimensional race track model, developing a control strategy, programming the software and testing the complete system on a dynamic test stand. In order to verify the simulation results it was necessary to conduct actual track testing on a representative vehicle. A professional racing driver completed three flying laps of the Killarney racing circuit in a vehicle fitted with various sensors including three axis orientation and acceleration sensors, a GPS and an engine control unit emulator for capturing engine data. This included lap time, vehicle accelerations, engine speed and manifold pressure, an indicator of driver input. The results obtained from the real time circuit simulation were compared to actual track data and the results showed good correlation. By changing the physical engine configuration in the hardware and gear ratios in the software, comparative capabilities of the system were evaluated. Again satisfactory results were obtained with the system clearly showing which configuration was best suited for a certain race track. This satisfies the modem trend of minimizing costs and development time and proved the value of the system as a suitable engineering tool for racing engine and drive train optimisation. The Real Time Full Circuit Driving Simulation System opened the door to further development in other areas of simulation. One such area is the driveability of a vehicle. By expanding the model it would be possible to evaluate previously subjective characteristics of a vehicle in a more objective manner.
AFRIKAANSE OPSOMMING: Die vereistes om die kwaliteit van enjins en voertuie te verhoog, word daagliks hoër. Meer gesofistikeerde enjintoetse word daarom vereis. Terselfdertyd is dit 'n groot uitdaging om die tydsduur en koste van ontwikkeling so laag as moontlik te hou. Gestadigde toestand enjintoetse, wat op die prinsiep van krag absorpsie werk, was vir baie jare die norm. Vanaf die middel tagtigerjare het die optimering van dinamiese enjinkarakteristieke en die simulasie van werklike bestuursituasies op enjintoetsbanke van al hoe groter belang geword. Die gevolg was die gebruik van twee rigting wisselof gelykstroomdinamometers en staan vandag bekend as dinamiese enjintoetsing. Deur 'n rekenaar met simulasiesagteware aan 'n enjin op 'n dinamiese toetsbank te koppel, word die moontlikheid geskep om enige werklike bestuursituasies van 'n voertuig te simuleer in die enjintoetsfasiliteit. Dinamiese enjintoetse kan opgedeel word in simulasietoetse en oorgangstoestandtoetse. By laasgenoemde genereer 'n "bestuurdersmodel" die beheerwaardes intyds deur te kyk na intydse metings terwyl by simulasietoetse die beheerwaardes vooraf bepaal word. Die "bestuurder" kan in die vorm van 'n persoon of rekenaarsimulasie wees. Die projek behels die toepassing van dinamiese enjintoetse vir renbaansimulasie en staan bekend as'n Intydse, Volledige Renbaansisteem weens die simulasie van 'n renmotor om 'n renbaan, onder die beheer van 'n bestuurdersmodel. Dit geskied terwyl die enjin intyds op 'n dinamiese enjintoetsbank loop en gekoppel is aan die simulasie. Deur die intydse, gesimuleerde rondtetye te analiseer, word die moontlikheid geskep om die enjinkonfigurasie te optimeer vir 'n sekere renbaan. Dit is bereik deur die keuse van 'n gepaste dinamiese voertuigmodel, 'n driedimensionele renbaanmodel, ontwikkeling van 'n beheermodel, programmering van die sagteware en integrasie van die dinamiese enjintoetsstelsel. Die simulasieresultate verkry is gestaaf deur werklike renbaantoetse. 'n Professionele renjaer het drie rondtes van die Killarney renbaan voltooi in 'n verteenwoordigende voertuig wat toegerus was met verskeie sensors o.a. drie as versnellings- en orientasiesensors, GPS en 'n enjinbeheereenheidemmuleerder vir die verkryging en stoor van enjindata. Die sensors het data versamel wat insluit rondtetyd, voertuigversnellings, enjinspoed en inlaatspruitstukdruk. Die korrelasie tussen die simulasie waardes en werklik gemete data was van hoë gehalte. Deur die fisiese enjinkonfigurasie te verander in die hardeware en ratverhoudings in die sagteware, is die vergelykbare kapasiteite van die renbaansimulasie geevalueer. Die resultate was weer bevredigend en die simulasie was in staat om die beste enjinkonfigurasie vir die renbaan uit te wys. Dit bevredig die moderne neiging om koste en ontwikkelingstyd so laag as moontlik te hou. Sodoende is bewys dat die stelsel waarde in die ingenieurswêreld het. 'n Intydse, Volledige Renbaansisteem die skep die geleentheid vir verdere ontwikkeling op verskeie terreine van simulasie. Een so 'n veld is die bestuurbaarheid van 'n voertuig. Deur die model verder te ontwikkel word die moontlikheid geskep om voorheen subjektiewe karakteristieke van 'n voertuig meer wetenskaplik te analiseer.
Williams, Steve. "Advanced Hardware-in-the-Loop Testing Assures RF Communication System Success." International Foundation for Telemetering, 2010. http://hdl.handle.net/10150/604299.
Full textRF Communication (COMMS) systems where receivers and transmitters are in motion must be proven rigorously over an array of natural RF link perturbations such as Carrier Doppler shift, Signal Doppler shift, delay, path loss and noise. These perturbations play significant roles in COMMS systems involving satellites, aircraft, UAVs, missiles, targets and ground stations. In these applications, COMMS system devices must also be tested against increasingly sophisticated intentional and unintentional interference, which must result in negligible impact on quality of service. Field testing and use of traditional test and measurement equipment will need to be substantially augmented with physics-compliant channel emulation equipment that broadens the scope, depth and coverage of such tests, while decreasing R&D and test costs and driving in quality. This paper describes dynamic link emulation driven by advanced antenna and motion modeling, detailed propagation models and link budget methods for realistic, nominal and worst-case hardware-in-the-loop test and verification.
Wu, Weixin. "Mining constraints for Testing and Verification." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/31056.
Full textMaster of Science
Shipway, Philip Howard. "Erosive wear of brittle materials and its laboratory simulation." Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282026.
Full textHill, Carlo Alexander Kim. "Simulation and testing of metallic aperture arrays at terahertz frequencies." Thesis, Durham University, 2016. http://etheses.dur.ac.uk/11624/.
Full textVanichkobchinda, Pongtana. "Numerical simulation of the dynamic impact breakage testing of rock." Thesis, University of Nottingham, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.420378.
Full textKilic, Yavuz. "Testing techniques and fault simulation for analogue CMOS integrated circuits." Thesis, University of Southampton, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390727.
Full textWang, Yuemiao. "Simulation combined model-based testing method for train control systems." Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8323/.
Full textFlowers, Susan Caroline. "Design of a laparoscopic simulation device for testing and training." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/92177.
Full textCataloged from PDF version of thesis.
Includes bibliographical references (page 38).
This thesis describes the development by Caroline Flowers of two prototypes of a benchtop laparoscopy simulator that mechanically simulates access ports using outer 'tissue' samples for port insertion and an inner cavity region where ex-vivo organs can be placed and operated on using laparoscopic tools. The alpha prototype was designed for testing tools for an MIT medical device design class, while the beta prototype was designed as a low-cost and more realistic substitute to simulators currently on the market.
by Susan Caroline Flowers.
S.B.
Gallant, Andrew. "The simulation, fabrication and testing of widely tunable micromachined capacitors." Thesis, Durham University, 2005. http://etheses.dur.ac.uk/1771/.
Full textBreckwoldt, William Andrew. "The Simulation and Testing of Fast Locomotion with Wheel-Legs." Case Western Reserve University School of Graduate Studies / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case153428064749947.
Full textBek, Jeremy. "Design, simulation, and testing of an electric propulsion cluster frame." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-300970.
Full textGenerellt erbjuder elektrisk framdrivning hög verkningsgrad men relativt låg dragkraft. För att avhjälpa detta kan flera jonmotorer sättas samman i en klusterkonfiguration och drivs parallellt. Detta kräver en noggrann utformning av en ram för att rymma de enskilda framdrivningssystemen. Denna ram måste vara modulär för att kunna användas i olika klusterstorlekar och verifiera termiska och mekaniska krav för att säkerställa den nominella driften av motorerna. Föreliggande rapport syftar till att visa designprocessen för en sådan ram, från preliminär modellering till experimentell studie av en prototyp. Detta dokument innehåller en översikt över den iterativa designprocessen, driven av termiska simuleringar gjorda med COMSOL Multiphysics, som ledde till uppfattningen av en 2 motorer och 4 motorer ram. En klumpelementmodell av jonmotorn skapades också för att modellera dess komplexa termiska beteende. Dessutom var den 2 motorer ram studeras mekaniskt med analytiska beräkningar och simuleringar av enkla laddafall med SolidWorks. Slutligen monterades en prototyp baserad på den 2 motorer rammodellen. Prototypen användes för att göra temperaturmätningar medan den är värd för 2 jonmotorer i en vakuumkammare. Temperaturfördelningen i klustret mättes och jämfördes med simuleringsresultat. Termiska simuleringar av den 2 motorer och 4 motorer ramen visade lovande resultat, medan mekaniska simuleringar av den 2 motorer versionen klarade alla krav. Dessutom överensstämde experimentella resultat till stor del med termiska simuleringar av prototypen. Slutligen var klumpelementmodellen mycket användbar för att kalibrera de andra modellerna med sin höga flexibilitet och snabba beräkningstid.
Sunneborn, Gudnadottir Olga. "Testing a generic GEANT4 detector simulation using H→γγ events." Thesis, Uppsala universitet, Högenergifysik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-364860.
Full textBagiev, Marat. "Gyroplane handling qualities assessment using flight testing and simulation techniques." Thesis, University of Glasgow, 2005. http://theses.gla.ac.uk/30918/.
Full textHeywood, James K. "AUTOMATED TESTING OF THE ADVANCED DATA ACQUISITION AND PROCESSING SYSTEM." International Foundation for Telemetering, 2001. http://hdl.handle.net/10150/606456.
Full textSoftware and techniques are described for testing the Advanced Data Acquisition and Processing System (ADAPS), the primary flight test telemetry system used at Edwards AFB, California. The software described acts as an additional simulation capability and moves the simulation definition process into a realm where data is formed by means of a high-order language. The potential for creation of more sophisticated simulated test data is thus enabled. Extension of the techniques described in this paper to applications other than testing is discussed.
VERHAEGHE, Jacques. "TESTING THE QUALITY OF A PCM OR PAM TELEMETRY SYSTEM." International Foundation for Telemetering, 1989. http://hdl.handle.net/10150/614495.
Full textVerifying the quality of a PCM (or PAM) telemetry system is an important concern before any launch. A frame simulator generated test is definitely inchoate to exercise the link’s real world disturbances response behavior. It should be completed with tests involving some disturbances measurements.
Smith, Joan M. "A business case for using modeling and simulation in developmental testing." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2001. http://handle.dtic.mil/100.2/ADA396695.
Full textThesis advisor(s): Boudreau, Michael ; Brown, C. David. "June 2001." Includes bibliographical references (p. 123-127). Also available in print.
Skjølberg, Ole Georg, and Anders Hansson. "Hybrid Concrete Structures : Experimental Testing and Numerical Simulation of Structural Elements." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for konstruksjonsteknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-12455.
Full textLiu, Fu. "Comparisons of subscoring methods in computerized adaptive testing| A simulation study." Thesis, The University of North Carolina at Greensboro, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=3745565.
Full textLIU, FU, Ph.D. Comparisons of Subscoring Methods in Computerized Adaptive Testing: A Simulation Study. (2015) Directed by Dr. Terry A. Ackerman. 187 pp. Given the increasing demands of subscore reports, various subscoring methods and augmentation techniques have been developed aiming to improve the subscore estimates, but few studies have been conducted to systematically compare these methods under the framework of computerized adaptive tests (CAT). This research conducts a simulation study, for the purpose of comparing five subscoring methods on score estimation under variable simulated CAT conditions. Among the five subscoring methods, the IND-UCAT scoring ignores the correlations among subtests, whereas the other four correlation-based scoring methods (SEQ-CAT, PC-MCAT, reSEQ-CAT, and AUG-CAT) capitalize on the correlation information in the scoring procedure. By manipulating the sublengths, the correlation structures, and the item selection algorithms, more comparable, pragmatic, and systematic testing scenarios are created for comparison purposes. Also, to make the best of the sources underlying the assessments, the study proposes a successive scoring procedure according to the structure of the higher-order IRT model, in which the test total score of individual examinees can be calculated after the subscore estimation procedure is conducted. Through the successive scoring procedure, the subscores and the total score of an examinee can be sequentially derived from one test. The results of the study indicate that in the low correlation structure, the original IND-CAT is suggested for subscore estimation considering the ease of implementation in practice, while the suggested total score estimation procedure is not recommended given the large divergences from the true total scores. For the mixed correlation structure with two moderate correlations and one strong correlation, the original SEQ-CAT or the combination of the SEQ-CAT item selection and the PC-MCAT scoring should be considered not only for subscore estimation but also for total score estimation. If the post-hoc estimation procedure is allowed, the original SEQ-CAT and the reSEQ-CAT scoring could be jointly conducted for the best score estimates. In the high correlation structure, the original PC-MCAT and the combination of the PC-MCAT scoring and the SEQ-CAT item selection are suggested for both the subscore estimation and the total score estimation. In terms of the post-hoc score estimation, the reSEQ-CAT scoring in conjunction with the original SEQ-CAT is strongly recommended. If the complexity of the implementation is an issue in practice, the reSEQ-CAT scoring jointly conducted with the original IND-UCAT could be considered for reasonable score estimates. Additionally, to compensate for the constrained use of item pools in PC-MCAT, the PC-MCAT with adaptively sequencing subtests (SEQ-MCAT) is proposed for future investigations. The simplifications of item and/or subtest selection criteria in a simple-structure MCAT, PC-MCAT, and SEQ-MCAT are also pointed out for the convenience of their applications in practice. Last, the limitations of the study are discussed and the directions for future studies are also provided.
Deetlefs, Ivan Niell. "Design, simulation, manufacture and testing of a free-piston Stirling engine." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/95922.
Full textENGLISH ABSTRACT: The aim of this study was to design and manufacture an experimentally testable free-piston Stirling engine (FPSE), including a linear electric generator; to develop and validate a theoretical simulation model; to identify problem areas pertaining to its manufacture; and finally to assess the work undertaken, to lay out the groundwork for the future development of a 3 kWe FPSE suitable for incorporation in a solar Stirling dish power generator. A redesigned version of the Beale B- 10B demonstrator engine was manufactured to overcome design diffculties and to simplify testing. The design made use of an electric generator designed at the Department of Electrical and Electronic Engineering at Stellenbosch University. Experimental measurements included piston and displacer motions, hot side and cold side temperatures, working space pressure, electric generator output, as well as heat rejection via a water jacket. Experimental measurements were taken prior to and subsequent to the addition of the electric generator. Indicated power was calculated as 0,659 W at a frequency of 10,99 Hz prior to the addition of the electric generator. The addition of the electric generator was unsuccessful since it was not well matched with the engine. The indicated power calculated was between 0,138 W and 0,144 W for different loads on the electric generator, while the electrical output power ranged from 1,23 mWe to 1,79 mWe. The addition of the electric generator produced non-continuous motion caused by magnetic forces instead of engine pressure variations. The major manufacturing diffculty was the attachment of magnets for the electric generator, but this was overcome with the manufacture of a special assembly jig. The theoretical simulation model was a combination of a third-order and dynamic analysis. Working space values were solved by the application of the conservation of mass, momentum and energy equations for a one-dimensional discretised model of the engine, while the motion of the piston and displacer was determined by applying the equations of motion. The majority of experimental measurements were predicted more accurately when higher heat transfer coeficients were used between the working space and wall temperatures. The theoretical simulation model was used to gain insight into the effect of input parameters on engine operation. The displacer rod diameter was shown to have implications on output power and stability, while it was shown that there is a natural tendency to deliver constant output power at a near-constant frequency over a range of piston loads for an FPSE. It was also shown that the design of an FPSE is complex and that the design of all components should be done in parallel. The control of an FPSE was seen to be both a necessity and can be used to exploit the advantages of the uncoupled nature of an FPSE.
AFRIKKANSE OPSOMMING: Die doel van hierdie studie was om 'n eksperimentele toetsbare vrye-werksuier Stirling enjin te vervaardiging, wat 'n lineêre elektriese kragopwekker insluit; om 'n teoretiese simulasie model te ontwikkel en te yk; om vervaardiging probleme te identi seer; en om die ondernemende werk te assesseer om 'n fondasie te lê vir die toekomstige ontwikkeling van 'n 3 kWe vrye-werksuier Stirling enjin wat by 'n Stirling sonskottel ingelyf kan word. 'n Herontwerpte weergawe van die Beale B-10B demonstrasie enjin was vervaardig om ontwerp probleme te bowe te kom en om die toets daarvan te vereenvoudig. Die ontwerp het gebruik gemaak van 'n elektriese kragopwekker wat by die Departement Elektriese en Elektroniese Ingenieurswese aan die Universiteit van Stellenbosch ontwerp is. Eksperimentele metings het die werksuier en verplaser bewegings ingesluit, sowel as die warm kant en koue kant temperature, die werkruimte druk, die elektriese uitset van die kragopwekker, sowel as die hitteuitruiling wat met 'n water verkoelingskringloop gepaard gaan. Eksperimentele metings was geneem voor en na die byvoeging van die elektriese kragopwekker. Kraglewering was bereken op 0,659 W teen 'n frekwensie van 10,99 Hz voordat die elektriese kragopwekker bygevoeg is. Die byvoeging van die elektriese kragopwekker was onsuksesvol omdat die nie gepas was vir die enjin nie. Die kraglewering is bereken op vlakke wat gewissel het tussen 0,138 W en 0,144 W vir die verskillende belastings op die elektriese kragopwekker, terwyl die elektriese uitset gewissel het tussen 1,23 mWe en 1,79 mWe. Die byvoeging van die elektriese kragopwekker het 'n nie-aaneenlopende beweging veroorsaak weens die magnetiese kragte wat dit beinvloed het in plaas van enjindruk variasies. Die belangrikste ontwerpuitdagings was die ontwerp van 'n werksuier en verplaser wat 'n klein toleransie passing kon handhaaf om sodoende 'n seël te verseker terwyl dit aan temperatuur variasies blootgestel was. Die grootste vervaardigingsprobleem was die aanheg van magnete vir die elektriese kragopwekker, maar dit is te bowe gekom deur 'n spesiale voeg te vervaardig. Die teoretiese simulasie model was 'n kombinasie van 'n derde-orde en 'n dinamiese analise. Werkruimte waardes was opgelos deur die toepassing van die behoud van massa, momentum en energie vergelykings vir 'n een-dimensionele gediskretiseerde model van die enjin, terwyl die beweging van die werksuier en verplaser bepaal was deur die toepassing van die bewegingvergelykings. Die meerderheid van die eksperimentele metings was meer akkuraat voorspel wanneer hoër warmteoordrag koë siënte tussen die werkruimte en muurtemperature gebruik was. Die teoretiese simulasie model was gebruik om insig in terme van die e ek van invoer veranderlikes op die enjin gedrag te toon. Daar was getoon dat die verplaserstaaf diameter implikasies het op kragoplewering en stabiliteit, terwyl die natuurlike tendens van 'n vrye-werksuier Stirling enjin gewys was om 'n konstante kraguitvoer te lewer op 'n naby-konstante frekwensie oor 'n reeks werksuier laste. Daar was ook gewys dat die ontwerp van 'n vryewerksuier Stirling enjin kompleks is en dat die ontwerp van alle komponente in parallel gedoen moet word. Die beheer van 'n vrye-werksuier Stirling enjin was gewys om beide noodsaaklik te wees, sowel as gebruik kan word om die unieke voordele van 'n vrye-werksuier Stirling enjin se ongekoppelde natuur te ontgin.
Larsson, Viktor, and L. Viktor Larsson. "Simulation and Testing of Energy Efficient Hydromechanical Drivlines for Construction Equipment." Thesis, Linköpings universitet, Fluida och mekatroniska system, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-107495.
Full textUnthank, Gary. "An investigation into logistic centre design tools." Thesis, University of Sunderland, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326329.
Full textTang, Chao. "Computational models for mining online drug reviews." HKBU Institutional Repository, 2014. https://repository.hkbu.edu.hk/etd_oa/87.
Full textQiu, Wangqi. "Fault simulation and test generation for small delay faults." Texas A&M University, 2006. http://hdl.handle.net/1969.1/4966.
Full textHou, Junwei. "Concurrent fault simulation for mixed-signal circuits." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/15735.
Full textSchrock, Ken, Todd Freestone, and Leon Bell. "GPS RECEIVER SELECTION AND TESTING FOR LAUNCH AND ORBITAL VEHICLES." International Foundation for Telemetering, 2000. http://hdl.handle.net/10150/608283.
Full textNASA Marshall Space Flight Center’s Bantam Robust Guidance Navigation & Control Project is investigating off the shelf navigation sensors that may be inexpensively combined into Kalman filters specifically tuned for launch and orbital vehicles. For this purpose, Marshall has purchased several GPS receivers and is evaluating them for these applications. The paper will discuss the receiver selection criteria and the test equipment used for evaluation. An overview of the analysis will be presented including the evaluation used to determine their success or failure. It will conclude with goals of the program and a recommendation for all GPS users.
van, Der Westhuizen Dean. "Construct validity testing of a low cost vitreoretinal surgical simulator." Master's thesis, Faculty of Health Sciences, 2021. http://hdl.handle.net/11427/33090.
Full textSawyers, William Alan. "Performance testing for the Marine Air Ground Task Force Tactical Warfare Simulation." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA304338.
Full textChoi, Seong Yeon. "Stochastic modeling in fault testing of decomposable sequential circuits through computer simulation." Thesis, University of Ottawa (Canada), 1992. http://hdl.handle.net/10393/7621.
Full textMastbergen, Daniel Blair. "Simulation and Testing of Resin Infusion Manufacturing Processes for Large Composite Structures." Thesis, Montana State University, 2004. http://etd.lib.montana.edu/etd/2004/mastbergen/MastbergenD0805.pdf.
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