无速度传感器直接转矩智能控制算法及优化

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1、沈阳工业大学硕士学位论文无速度传感器直接转矩智能控制算法及优化姓名：李海平申请学位级别：硕士专业：检测技术及自动化装置指导教师：曹承志20030301沈阳工业大学硕士学位论文———————————————————————————————————————●———————————————————————————————————————————一IntelligenceAlgorithmandOptimizingMethodAppliedinSpeed-sensorlessDTCSystemWitllthedevelopmentofthecomputer,autocontroltech

2、nologyandtheelectronandelectricpowertechnology，theperformanceofthefrequencyconversionofACdrivehasbeenimprovedgreatly，andsomenewtechniquesuchasVectorControlandDirectTorqueControlhavebeenappliedwidely．Atthesametime，thetechniqueofthefrequencyconversionofACdrivehasbeenmoreandmoreconsummate．Recent

3、lyartificialintelligencehasshoweditspowerinthefieldoftheACdrivecontr01．ItisprovedbysomeresearcherthattheACsystemcangethighperformanceinself-adapt,self-diagnose，self-protectanddynamiccapability．Inthispaper,someartificialintelligence，suchasFuzzyControl，GeneticAlgorithmandNeuralNetwork,areapplie

4、dinDirectTorqueControl0yrc)system，andlotsofemulatioilsaredoneunderMATLAB／SIMULINK．Asaexcellentcontrolmethod，DirectTorqueConUoltakestheparameteroftorqueasitscontrolobject。anditbasedonstatorcoordinate．Asaresult，DTCsystemisaffectedbyfewerparameterofthemotorandhaslesscomplexstructureandfewercalcu

5、lations．Sinceitwasbroughtforward，DirectTorqueControlhasbeentookseriousattentionbydomesticandforeignscholarsbecauseofitsnoveltyidea,simplestructureandwonderfulproperty．ThispaperadoptstheFuzzycontrollertoselectthevoltagevectorsafterexpoundthebasictheoryofDTC，andthismethodisimprovedtobeeffective

6、bytheresultoftheemulation．However，thedesignofFuzzycontrollerisalwayssubjectiveandblindness，amethodusedGeneticAlgorithmt0optimizetheFuzzycontrollerisbroughtforward．Inordertoobtainahighqualityinthelow—speedareaofDICsystem，aprecisionmodelofmotorinthelow—speedareaisnecessaryofwhichaimportantparam

7、eterisrotatespeed．Becausetheinstallationandthemaintenanceofthespeedsensorhavebroughtaboutmanytroublestopeoplewhouseit，furthermore，ithaslessaccuracy．Theexploitationofthespeed—sensorlessisabletonotonlyreducethecostofthewholesystembutalsoenhance