Sensorless Control of Permanent-Magnet Synchronous Motor Based on High-Frequency Signal Injection and Kalman Filter
This paper presents a method for permanent magnet synchronous motor rotor position estimation at low speed with high accuracy. The high-frequency voltage signal is injected into motor stator windings， and the corresponding current signal containing information of rotor position estimation error is demodulated. A Kalman filter is chosen as the rotor position observer to depress the nonlinear effect caused by inverter and improve the estimation accuracy at low speed. Simulation results show that this method is applicable to both steady state and dynamic state estimation of rotor position. With the method proposed, a DSP (TMS320F2812) based position control system is implemented and tested. The experimental results are also presented in this paper, which show that the proposed scheme can achieve high accuracy at low speed.
high-frequency signal injection Kalman filter sensorless control
QI Xin ZHOU Xiao-min WANG Chang-song ZHONG Li-ping WANG Hui
Department of Mechatronics,School of Mechanical Engineering,University of Science and Technology Beijing 656 Mailbox,30 Xue Yuan Road，Beijing,100083,P.R.China
国际会议
深圳
英文
1191-1195
2008-12-10（万方平台首次上网日期，不代表论文的发表时间）