永磁交流伺服系统及其控制策略研究

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1、浙江大学博士学位论文永磁交流伺服系统及其控制策略研究姓名：许振伟申请学位级别：博士专业：控制理论与控制工程指导教师：蒋静坪20030701浙江大学博士学位论文ABSTRACTInthelastseveraldecades，thePMSMisrapidlyimpliedonmanykindsofdrivesvstems，comparedwithothermotors，thePMSMhasmanyindividualfeatures．AtthesaiTietimeinviewofthedevelop

2、menttrendsofelectricdrives，thenovelcontrolstrategies，whichareaimedattheunsolvedproblemsintheconventionalPMSMservosystem，areappliedtodrives，atthispaperthetheoryandindustrialapplicationarestudied．Atfirst．themathematicalmodelofPMSMiSpresentedwhichisbase

3、donthestudyofthephysicalandtorqueequation．Thenthebasesimulationtechniqueispresented．，由edecouplingcontrollerofcurrentloopisdesignedbasedontheintemalmodelcontr01．，andthecontrollerhasonlyoneadjustableparameteranddesignprocedureisverysimple．Accordingtoth

4、erelationshipoftheangleofthemaximumtorqueandtheqaxis，thereluctancetorquefursallentPMSMismadefulluseofandthesatorcurrentamplitudeisreducedbyalargepercentage，SOthatthesystemrobustnessisgreatlyincreased．Atthespeedloop，thispaperpresentsasinglevaluemodela

5、lgorithmiccontrolstrategywhichisthesirnpliedformofnormalmodelalgorithmiccontrolandhaslesscomputationworkthanthelatter,SOthereal-timeperformanceisverygood．Theconventionalcontrolstrategiesrestonaccuratemotormodelsandparametersanditssystemisverycomplex．

6、Inordertoovercomethisdisadvantage，thispapercombinefuzzycontrolwithpredictivecontrolformthefuzzypredictivecontroller,whichIIlakesbestuseoftherobustnessoffozzycontrolandthestabilityofpredi【ctivecontr01．andthes37stemhasverylittleevernnostableerror．Atthe

7、sametimedesigntheswitchcontrolstrategybasedonfuzzyrulestodecreasetheswitchdisturbance．Inordertodecreasethecost、simplifythestructureofthePMSMservosystemmadatthesamehasrioeffectonthesystemperformance，thisPaDeruseshallelementas也epositionsensor．whiehhasv

8、erylowsolutionbutverylowCOst．andinordertorealizesinusoidalcurrentdriveofPMSM．thisPaDerpresentsanewrotorpositionestimatorbasedonfluxestimation．Thetheoryandsimulationresultsverifythecorrectofthecontrolstrategy．CombinedwiththeZhejiangprovinceimportantsc