针对永磁同步电机(PMSM)低速运行时的速度跟踪精度差,使用输入输出精确反馈线性化控制,以探索高精度的PMSM低速运行控制特性。为了获取更好的精确控制性能,首先采用微分同胚变换和反馈线性化理论得到PMSM的输入输出精确反馈线性化的解耦模型,然后基于其解耦模型,实现了PMSM低速运行时的精确控制。仿真和试验结果表明:该方法能够快速跟踪负载转矩和指令速度,具有过冲小、静态误差小、鲁棒性强、控制精确性高等优点。

In view of the poor speed tracking accuracy of permanent magnet synchronous motor (PMSM) under low speed operation, inputoutput precise feedback linearization control was used to explore highprecision PMSM lowspeed operation characteristics. In order to obtain better precise control performance, the decoupling model of PMSM inputoutput precision feedback linearization was obtained by differential homeomorphic transformation and feedback linearization theory. Then, based on this decoupling model, precise control of PMSM at low speed was achieved. Simulation and experimental results applied to PMSM showed that the proposed approach could quickly track load torque and command speed, and the system had advantages of small overshoot, small static error, high robustness and high control accuracy.

TM 351:TP 273

国家自然科学基金项目(51867006,61861007)；贵州省科技厅贵大联合基金项目(黔科合LH字[2017]7229号)7224,黔科合平台人才[2017]5788)