关键词: 机床进给;自抗扰, 扩张状态观测器, 永磁直线同步电动机, 矢量控制

Abstract:

According to the nonlinear and variable coupling of AC permanent magnet linear synchronous motor(PMLSM) with unknown modeling dynamic state and uncertain destabilization,a improved first-order auto-disturbance rejection controller(ADRC) with its discrete model was proposed ,which could overcome the rough of non-linear function in nonlinear state error feedback of conventional ADRC.The inner disturbance and outside disturbance could be observed with the extend state observer of ADRC, and used it to offset the disturbance of system, and the real-time dynamic linearization of the non-linear speed regulation system of PMLSM was realized. The simulation result indicates the system based on this improved ADRC has better dynamic and static and robust characteristics. 

Key words: machine tool feeding, auto-disturbances-rejection, extended state observer, permanent magnet linear synchronous motor, vector control