电励磁直线电动机磁悬浮系统的非线性自适应反步控制  

Nonlinear adaptive backstepping control of magnetic levitation system of electrically excited linear motor

作　　者：邢艺馨 蓝益鹏[1] 雷城 XING Yixin;LAN Yipeng;LEI Cheng(School of Electrical Engineering,Shenyang University of Technology,Shenyang 110870,CHN)

机构地区：[1]沈阳工业大学电气工程学院,辽宁沈阳110870

出　　处：《制造技术与机床》2023年第2期104-108,共5页Manufacturing Technology & Machine Tool

基　　金：国家自然科学基金资助项目(51575363)。

摘　　要：为提高电励磁直线电动机(electrically excited linear motors,EELM)驱动的数控机床磁悬浮平台控制系统的性能,提出一种非线性自适应反步控制方法。研究EELM的结构与运行机理,该EELM的定子由铁心和励磁绕组组成,动子由动子铁心和电枢绕组组成,与数控机床进给平台固定连接驱动平台运动,励磁磁场对动子铁心的单边磁拉力实现平台的悬浮;建立EELM磁悬浮平台控制系统的数学模型与状态方程;对电励磁直线电动机磁悬浮平台运行过程中存在的不确定性扰动,设计非线性自适应反步控制器,对未知扰动进行估计,采用李雅普诺夫理论证明系统的稳定性;用MATLAB/Simulink对控制系统进行计算机仿真,验证所提方法的有效性。In order to improve the performance of the magnetic levitation platform control system of NC machine tool driven by electrically excited linear motors(EELM),a nonlinear adaptive backstepping control method is proposed.The structure and operation mechanism of EELM are studied.The stator of EELM is composed of iron core and excitation winding,and the mover is composed of iron core and armature winding.It is fixedly connected with the feed platform of NC machine tool to drive the movement of the platform.The suspension of the platform is realized by the suspension of the excitation magnetic field on the unilateral magnetic pulling platform of the mover iron core;The mathematical model and state equation of the control system of the EELM maglev platform are established;For the uncertain disturbance existing in the operation of the magnetic levitation platform of electrically excited linear motor,The unknown disturbance is estimated by designing a nonlinear adaptive backstepping controller,and the Lyapunov theory is used to verify the stability of the system.The computer simulation of the control system is carried out with MATLAB/Simulink to verify the effectiveness of the proposed method.

关 键 词：电励磁 直线电动机 磁悬浮系统 非线性自适应控制 

分 类 号：TM383[电气工程—电机]