简介：分析了电力电子控制系统中可能发生的各种故障，针对三相逆变器进行详细的理论分析和研究，并提出了一种基于观测器的故障诊断方法。仿真结果了这种方法的实用性和有效性。

简介：摘要－本文探讨了感应电动机传动装置直接场取向控制（FOC）之闭环转子磁通观测仪和参考模型自适应系统（MRAS）的实施和实验结果。该电动机是通过一个以MDS控制的可控硅（MCT）为基础的双向换流器，从一个高频（20kHz)交流谐振全连线获得电力的。本文介绍了多种电动机控制功能的硬件和软件实现方式。闭环观测仪通过一种依赖转速的增量（SDG）将电流和电压模型结合起来。电流模型确定后在转子参考系中运行，并且只要求有一个编码器角度，而不是实现用的实际转子转速。该闭环观测仪允许使用一个纯模拟积分器来计算适当的定子磁通。使用交流谐振连线，使定子磁通的全数字计算更加复杂。在一台400Hz2马力的感应电动机上，对观测仪和自适应控制器进行了低速和高速试验。在低速时，闭环观测仪显示出了对起因于电流模型转子磁通估算的转子电路时间常数的敏感性。在高速时，闭环观测仪追踪到了电压模型转子磁通估算特性。MRAS能够通过校正电流模型转子磁通观测仪在估算其参数时的误差，以改进整个转速响应。

简介：石佛寺水库系辽河干流上的唯一控制性工程,一期规模最大库容为1.85亿m3,相应水位50.69m.工程由拦河主坝、泄洪闸及左右岸副坝等组成,主要建筑物级别为Ⅱ级,主、副坝均为均质土坝,最大坝高12.1m,拦河主坝长12.433km,副坝总长度为29.953km.由于水库属平原区水库,主、副坝非常长,其位移观测与一般土石坝比较而言有其特殊性及相应难度.

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简介：A3Dcontact-frictionmodelforpoundingatbridgesduringearthquakes;ANovelConceptforFaultCurrentTolerableContactors;Astudyofsurfacechangeforelectromagneticcontactor;Anexperimentalstudyabouteffectoffarinfraredradiantceramicsonefficientmethanefermentation;DynamicanalysisandsimulationofelectromagneticcontactorswithACsolenoids;DynamicsimulationofmagneticcontactorswithACsolcnoids;

简介：""""Sensorless""""Controlof4-Quadrant-RectifiersforVoltageSourceInverters(VSI);1kV4H-SiCJBSRectifiersFabricatedUsinganAIMCappedAnneal;1MHzSelf-DrivenZVSFull-BridgeConverterfor48VPowerPods;3-levelthreephasesoft-switchingPWMrectifierwithsingleauxiliaryresonantcommutatedsnubbercircuit;3-phaseconvertermodelingforunbalancedradialsystems;A100kWHigh-PerformancePWMRectifierWithaZCTSoft-SwitchingTechnique;

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简介：3DSoundLocalizationBasedonAudioandVideo;A1.5-GHzI30-nmItanium2ProcessorWith6-MBOn-dieL3Cache;A1.5GHzThirdGenerationItanium2Processor;A60.5GHzmillimeterwavespreadspectrumradarandcommunicationsystemusingaCo-useantenna;Acontourcharacterextractionapproachinconjunctionwithaneuralconfidencefusiontechniqueforthesegmentationofhandwritingrecognition;ADiscussionontheClassifierProjectionSpaceforClassifierCombining;

简介：A10mW,4GHzCMOSPhase-LockedLoopwithDual-ModeTuningTechniqueandPartly-lntegratedLoopFilter;Aclean,quiet,environmentallyfriendlysnowmobile;Acomputer-controllersystemforstudyingthethermodesorptionofdeuterium;AcontrolofvehicleusingSteer-by-WiresystemwithHardware-In-the-Loop-Simulationsystem;AcorrdinatcdcontrolofSTATCOMtoimprovevoltagestability;ADesignofReflection-TypePolarizationControlDeviceUsingFerroelectricLiquidCrystals;

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简介：HYDROGENINDUCEDCRACKINGFAILUREOFSA516GRADE70STEELINNEARNEUTRALTOHIGHPHSOLUTION:PART1FIELDINVESTIGATION,InvestigationsoilMassChangeandSurfaceMorphologyofContactsinElectromagneticContactor,Masschangeandsurfacemorphologyofcontactinelectromagneticcontactor

简介：Afirewhilstchargingabatchreactor,Ahybridmathematicalmodelforathree-phaseindustrialhydrogenationreactor,AkineticstudyoftheeffectofSO{sub}2onNO-rebumingbyhydrocarbons.Amultivariablefuzzycontrollerforacontinuousstirredtankreactor

简介：AhighlymanufacturablehighdensityembeddedSRAMtechnologyfor90nmCMOS,AhighlymanufacturablehighdensityembeddedSRAMtechnologyfor90nmSRAM,AMission-Impact-BasedApproachtoINFOSECAlarmCorrelation,Amodifiedevolutionaryprogrammingforflowshopscheduling,

简介：Aproof-of-conceptstudyoftheuseofcomplexboridesfordisassemblyofdecommissionednuclearreactorcontainmentvessels，Areactorsystemcombiningreductivedechlorinationwithco-metabolicoxidationforcompletedegradation,oftetrachloroethylene，AReduced-BasisDiscretizationMethodforChemicalVaporDepositionReactorSimulation，Astrategyforsupervisorycontrolofbatchreactors:anexperimentalstudy，ASTUDYOFBENZENEFORMATIONINALAMINARFLOWREACTOR，AtheoreticalmodelOfcriticalheatfluxinflowboilingatlowqualities。

简介：A8192ComplexPointFFT/IFFTforCOFDMModulationSchemeinDVB-TSystem,Acomparisonofvariousbuck-boost,convertersandtheirapplicationtoPFC,AControlMethodind-qSynchronousFrameforPWMBoostRectifierunderGeneralizedUnbalancedOperatingConditions,ADCmodelfortransientanalysisofaseriesactivefilterintegratedwithadouble-seriesdioderectifier

简介：AFullyDigitalRapidChargerforElectricScooters，Afuzzy-controlledsingle-phaseactivepowerfilteroperatingwithfixedswitchingfrequencyforreactivepowerandcurrentharmonicscompensation，Afuzzy-logic-basedcontrollerforactiverectifier，AHighPerformanceCMOSCurrent-ModePrecisionFull-WaveRectifier(PFWR)，Ahighpoweractivefilterforharmoniccompensationinanelectriclocomotive，Ahigh-power-factor,three-phaseisolatedAC-DCconverterusinghigh-frequencycurrentinjection，AHybridCompensationSystemwithAnActiveFilterandDistributedPassiveFiltersinPowerSystemswithDispersedGeneration。