永磁直线电动机的内模PID控制和抗干扰能力分析

Internal Model PID Control and Anti-Interference Ability Analysis of Permanent Magnet Linear Machine

为了提高永磁直线电动机在运行过程中的稳定性和精确性,采用内模PID方法对永磁直线的运行过程进行优化控制。首先,采用内模PID和q轴电流相结合的方法,建立永磁直线电动机的控制模型;其次,在改变内模PID的控制参数情况下,分析永磁直线电动机的运行性能;最后,在各种类型干扰信号的情况下,研究内模PID控制在永磁直线电动机运行过程中的可靠性。理论分析和仿真计算结果表明,内模PID控制不仅有利于提高永磁直线电动机在运行过程中的稳定性和精确性,也能提高整个运动系统的抗干扰能力。

Internal model PID method was proposed to optimal the operation process of permanent magnet linear machineand to improve its accuracy and stability. Firstly, a control model of permanent magnet linear machine was constructedwith the combination of internal model PID and q -axis current. Secondly, the operational performance of permanentmanger linear machine was analyzed based on the control parameter of internal model PID. Finally, considering the kinds ofanti-interference signal, the operational reliability of permanent magnet linear machine was researched. The theory analysisand simulation results show that internal model PID is benefit to improve the accuracy and stability of permanent magnet linearmachine, and the anti-interference ability of whole motion system is also improved.