基于四线旋转变压器及AD2S1200的叉车线控转向永磁同步电机角度解码研究汪剑鸣;袁臣虎;刘瑞;李凯【摘要】Therotorpositiondecodingwasstudiedinthispaperforcontrollingthepermanentmagneticsynchronousmachine(PMSM)oftheforkliftsteer-by-wiresystembasedonthefour-lineresolverandthechipAD2S1200
Firstly,anamplifyingcircuitwasdesignedtoamplifyandfilterthesinewavesignalofthechipAD2S1200,andthissignalwasusedforthesineexcitationsignalofresolver
Thesingle-endedoutputsignalofrotarytransformerisasineandcosinesignalwithangleinformation
Then,thissignalwasprocessedintoadifferential-modeinputsignalneededbythechipAD2S1200throughtheconditioningcircuit
TheangleinformationprocessedbyinterfacecircuitalsowasobtainedbytheDSPchipMC56F8367ofFreescale
Andadigitalfilteringmethodwasappliedtoprocesstheangleinformation
Finally,thePMSMrotorpositionwasobtainedexactly
Theexperi