Phase-lead Linear Active Disturbance Rejection Controller of Permanent Magnet Synchronous Linear Motor Platform

Abstract

In order to solve the problem that the nonlinear interference of the ironless permanent magnet synchronous linear motor (ILPMSLM) platform affects the motion control system. In this paper, an improved linear active disturbance rejection controller (LADRC) algorithm based on phase-lead compensator is proposed, which is based on the principle of phase-lead compensator and LADRC technology. By improving the feedback control rate in combination with the phase-lead component, the system bandwidth is expanded, so that the extended state observer can estimate the phase of the disturbance, and the tracking accuracy and anti-disturbance capability of the system are improved. The motion performance of the system under the point signal, periodic signal and ramp signal is studied separately. The simulation results show that the improved phase-lead LADRC can improve the motion control performance of linear motor more effectively, compared with the conventional LADRC and the traditional the phase-lead PI controller.