Low Speed Compound Direct-drive Permanent Magnet Synchronous Motor Control System with Load Torque Compensation

摘要：

　　Effected by sensor measurement noise,system noise and load disturbance torque,dynamic performance of low speed compound direct-drive permanent magnet synchronous machine(PMSM) decreased and speed fluctuation increased,which result in creeping phenomenon and unstable working state of servo system directly driven by PMSM.A load torque observer based on extended kalman filter(EKF) is proposed here,which gives correct estimation of rotor position,rotor speed and load torque through electromagnetic torque and encoder signal.A control strategy using estimated load torque for forward feedback compensation is also discussed with no need of extra hardware equipment.Simulation results showed that PMSM can operate steadily at the speed of 2.5r/min with less speed fluctuation only using a low resolution encoder,which verified the effectiveness and practicability of the method mentioned in this paper.

关键词： compound direct-drive permanent magnet synchronous machine (CDDPMSM) extended kalman filter (EKF) forward feedback compensation load torque observer

作者: Liang Cheng Xiaojie Ye Dongru Sun Yunyue Ye Yong Jin

作者单位: College of Electrical Engineering, Zhejiang University, No.38, Zheda Road, Hangzhou, China Zhejiang Institute of Quality Inspection Science, No.222, Tianmushan Road, Hangzhou, China

会议类型: 国际会议

会议名称: 第九届国际直线电机驱动与工业应用会议(LDIA2013)

会议地点: 杭州

会议语种:英文

页码: 1-4

在线出版日期: 2013-07-07（万方平台首次上网日期，不代表论文的发表时间）