基于自適應WNN的無位置傳感器無刷直流電機控制研究.pdf

1、中南大學碩士學位論文基于自適應WNN的無位置傳感器無刷直流電機控制研究姓名：陳佳鋒申請學位級別：碩士專業(yè)：電氣工程指導教師：黃摯雄201105ABSTRACTSensorlessBmshlessDCmotor洫出estluctureandper南rmanceforitsmanyadVantages，greatdeVelopmentpotential，istheresearchfocusinrecentyearsA1thou曲ithasd

2、oneunderitscontrol，alotofresearchwork，butstilltherearesomeimportantissueisnotmoresatis白cto眄solution，thuslimitingthesensorlessbrushlessDCmotorwidelyusedinindust取Theseincludelaunchcontrol，rotorpositionestimation，loaddistur

3、bancecontrol，indus砸alcontrolandother矗elda_ppIicationsInthispaper，therotorpositionestimationc廁edoutrelevantresearch’111jsin—depthanalysisofthebrushlessDCmotorthebasicstmctureand、vorkingprinciple，amathematicalmodel，deriVed

4、outletandmotorbackEMFzerocrossingpointofthedirectrelationshipbetweentllecommutation，the1inevoltageandlinethatexiStsbetweenthebackEMFl訪earrelationshipLinevoltageauldthusestablisheda1im(betweentherotorposition，Whichgreatly

5、simplifiesthecalculationofsystemanalysisdimcultSystemidentificationmeory’thebmshlessDCmotorasanonlinearsystem，systemidentificationtogetmrou曲therotorpositionsignalConstructionofa￡I印tiVeneuralnetworktopologyofsystemidentif

6、icationinordergradientdescentmethodandvariablestepsizecontr01methodforo船inetIainingandonlinetrainingnetworkparametersThrou曲simulationanalysis，theproposedmodelstructure，whenthemotorisrunningsmoothly，thesystemcanaccurately

7、estimatetherotorpositionsignalformecontrolofthemotorcommutationtoprovideareliableguaranteeThismodelwithothermodelsthroughtheanalysisoftheresultswerecompared，theproposedmethodestimatesmoreaccurate，thee啪rrateisIower，andthe

8、stllJctureismoresimpleBuildexperimentalhardwarecircuitbyusingtheT】MS320F2812asthecontrollerofthemethodsofexperimentaltestingTheexperimentalresultsshowthatthestableoperationofthemotor，thesystemcangiveanaccuratenumberforsu