Abstract：In order to improve the accuracy of rotor position detection for permanent magnet synchronous motor (PMSM) and guarantee reliable operation of PMSM control system, an adaptive calibration method of reference signal for PMSM hybrid encoder was proposed. Based on analyzing the absolute and incremental modes of PMSM rotor position hybrid detection, the reference signal of encoder was pre-calibrated and error analysis was conducted. Then, combined with the characteristics of current vector angle in PMSM vector control strategy, the pre-calibration results of reference signal were adaptively optimized by the combination of fixed-step and variable-step adjustment methods. Simulation and experimental results show that the reference signal of encoder can be calibrated exactly and quickly, and the rotor position is acquired accurately through the proposed method. Besides, the proposed method is suitable for PMSM whether the motor is loaded or not.
王要强, 马小勇, 曹冲, 彭金柱. 永磁同步电机复合编码器参考信号自适应标定方法[J]. 电工技术学报, 2018, 33(10): 2383-2391.
Wang Yaoqiang, Ma Xiaoyong, Cao Chong, Peng Jinzhu. Adaptive Calibration of Reference Signal for Permanent Magnet Synchronous Motor Hybrid Encoder. Transactions of China Electrotechnical Society, 2018, 33(10): 2383-2391.
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2018, Vol. 33 
