基于反馈线性化的永磁直线同步电机自适应动态滑模控制  

Adaptive Dynamic Sliding Mode Control of Permanent Magnet Linear Synchronous Motor Based on Feedback Linearization

作　　者：张康 王丽梅[1] Zhang Kang;Wang Limei(School of Electrical Engineering Shenyang University of Technology,Shenyang 110870 China)

机构地区：[1]沈阳工业大学电气工程学院,沈阳110870

出　　处：《电工技术学报》2021年第19期4016-4024,共9页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(51875366)。

摘　　要：在高速、高精度永磁直线同步电机伺服系统中,直轴电流和交轴电流之间、线速度和电流之间存在的非线性耦合及参数摄动和负载扰动等不确定因素,严重影响速度跟踪精度和响应速度。为此,该文采用反馈线性化控制方法,通过坐标变换和状态反馈,将电机仿射非线性模型解耦线性化为独立的电流子系统和线速度子系统。在线性化模型的基础上,设计动态滑模控制器,降低反馈线性化控制对直线电机数学模型的依赖性,提高伺服系统的鲁棒性。同时设计自适应控制律估计系统不确定性扰动,削弱系统抖振现象。仿真和实验结果表明,所提出的控制策略能有效提高速度跟踪性能,增强系统的鲁棒性。In the high-speed and high-precision permanent magnet linear synchronous motor servo system,the nonlinear coupling between direct axis current and quadrature axis current,linear speed and current,as well as parameter perturbation and load disturbance,seriously affected the speed tracking accuracy and response speed.In this paper,the feedback linearization control method was used to decouple and linearize the affine nonlinear model of the motor into independent current subsystem and linear speed subsystem through coordinate transformation and state feedback.Based on the linearization model,a dynamic sliding mode controller was designed to reduce the dependence of the feedback linearization control on the linear motor mathematical model and improve the robustness of the servo system.At the same time,an adaptive control law was designed to estimate the uncertain disturbance and weaken the chattering phenomenon.Simulation and experimental results show that the proposed control strategy can effectively improve the speed tracking performance and enhance the robustness of the system.

关 键 词：永磁直线同步电机 速度跟踪 反馈线性化 动态滑模控制 自适应 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]