直线电机的基于模型扰动抑制设计

摘要

This paper adopts Model- Based Disturbance Attenuation (MBDA) method to attenuates external disturbances such as frictional forces, cutting forces, load variations for a permanent magnet linear AC synchronous motor (PMLSM) with high precision and micro -feed. The MBDA uses the nominal plant which is in parallel form with the plant and the output feedback. The error signal, which is the difference between the plant output and the nominal plant output, is fed back through a compensator. (IP) controller is designed in velocity loop so as to meet the requirement of fast tracking and resist disturbance greatly. Simulation results verify that this control method has fast response speed and strong disturbance attenuation, it also can effectively increase processing precision.%针对高精度、微进给永磁直线交流同步电机驱动系统，采用基于模型的扰动抑制方法，对诸如摩擦力、切削力、负载变动之类的扰动进行抑制.同时针对速度环设计了积分-比例(IP)控制器，以满足系统快速跟踪指令的要求，并具有较强的抗扰动能力.仿真结果表明，该控制方法响应速度快，抗干扰能力强，且能有效地提高加工精度.