电子设计工程
電子設計工程
전자설계공정
ELECTRONIC DESIGN ENGINEERING
2012年
2期
104-107,111
,共5页
无刷直流电机%反电动势(BEMF)%无位置传感器%数字信号控制器
無刷直流電機%反電動勢(BEMF)%無位置傳感器%數字信號控製器
무쇄직류전궤%반전동세(BEMF)%무위치전감기%수자신호공제기
BLDC motor%Back-EMF%sensorless%digital signal controller
针对电机应用场合、体积缩小与节约成本等诸多问题,采用反电动势过零点检测方法,设计了基于dsPIC30F3010芯片的无刷直流电机无位置传感器控制系统。分析了dsPIC30F3010外围电路,逆变及其驱动电路,反电动势检测电路,电流采样与过流保护电路,开发了主程序和中速事件处理程序,并给出了电机正常运行时端电压的波形。实验结果表明系统能够控制电机顺利起动,而且实现了电机正确的换相和正常运行,证明了系统设计的可行性。
針對電機應用場閤、體積縮小與節約成本等諸多問題,採用反電動勢過零點檢測方法,設計瞭基于dsPIC30F3010芯片的無刷直流電機無位置傳感器控製繫統。分析瞭dsPIC30F3010外圍電路,逆變及其驅動電路,反電動勢檢測電路,電流採樣與過流保護電路,開髮瞭主程序和中速事件處理程序,併給齣瞭電機正常運行時耑電壓的波形。實驗結果錶明繫統能夠控製電機順利起動,而且實現瞭電機正確的換相和正常運行,證明瞭繫統設計的可行性。
침대전궤응용장합、체적축소여절약성본등제다문제,채용반전동세과영점검측방법,설계료기우dsPIC30F3010심편적무쇄직류전궤무위치전감기공제계통。분석료dsPIC30F3010외위전로,역변급기구동전로,반전동세검측전로,전류채양여과류보호전로,개발료주정서화중속사건처리정서,병급출료전궤정상운행시단전압적파형。실험결과표명계통능구공제전궤순리기동,이차실현료전궤정학적환상화정상운행,증명료계통설계적가행성。
Aiming at motor applications,size dwindling and cost saving,and many other problems,with the method of Back-EMF zero crossing detection,established a set of sensorless brushless DC motor control system which was based on dsPIC30F3010 chip.Analysed the control chip and its peripheral circuit,the inverter and the MOS-FET driver circuit,three Phase BEMF detective circuit,current sampling and over voltage protection circuit,developed the main Program and medium_event_handler program,the normal running waveform is shown.The result of the experiment showed that the control system can make the motor start successfully and achieved the correct commutation and normal running.It proved design of the system is feasible.
