[关键词]
[摘要]
电流环的响应速度决定永磁同步电机伺服系统的响应速度。无差拍电流控制可以使电流环具有良好的响应速度,但当电机参数与控制算法中电机参数不匹配时电流会产生稳态误差,无法输出期望转矩。针对该问题将离散积分加入无差拍电流控制算法中并且给出积分系数的取值范围,消除了因电机参数变化而引起的电流稳态误差,提高了电流跟踪精度。最后通过仿真与试验验证了所提算法的有效性和实用性。
[Key word]
[Abstract]
The response specd of current loop of permanent magnet synchronous motor (PMSM) servo system determines the servo system response speed. The deadbeat current control allowed PMSM current control loop to have a good response speed. However, when the actual motor parameters did not match the motor parameters in the control algorithm, current steady error would be produced, and the desired torque could not be output. The discretetime integral was added to the deadbeat current control algorithm and the range of integral coefficients was given, which eliminated the current steady error caused by the change of motor parameters and the accuracy of current tracking was improved. Finally, the validity and practicability of the proposed algorithm were verified by experiments.
[中图分类号]
TM 351
[基金项目]