改进的永磁同步直线电机直接推力控制策略  

Improved control strategy of permanent magnet synchronous linear motor direct thrust

作　　者：陈浩然[1] 汪旭东[1] 许孝卓[1] 

机构地区：[1]河南理工大学电气工程与自动化学院,焦作454000

出　　处：《电子测量技术》2017年第2期38-41,45,共5页Electronic Measurement Technology

基　　金：国家自然科学基金项目(U150410164);教育部高校博士点基金项目(20114116110003);河南省教育厅自然科学研究项目(13A470337);河南省国际合作项目(144300510014)资助

摘　　要：针对传统直接推力控制策略的瞬态响应慢和稳态误差大的问题,提出基于线性二次调节器的永磁同步直线电机直接推力控制策略,建立新型的多输入输出的空间状态电机模型,以定子磁链和推力作为状态量,设计线性二次调节器来获得线性状态反馈控制律,并用来取代传统的定子磁链、推力PI调节模块。通过增广的电机空间状态模型达到减小稳态误差和推力波动的目的。通过MATLAB/Simulink仿真,其结果表明,改进的控制策略可以得到更快的动态响应,同时具有减少推力、磁链脉动的效果,所设计的控制系统达到更好的稳态特性和动态特性,具有良好的控制性能。To solve the problems of slow transient response and big steady-state error of traditional direct thrust control strategy.In this paper,the linear quadratic regulator of permanent magnet synchronous linear motor direct thrust control strategy is presented,a new type of multiple input and output space state model which has the stator flux linkage and thrust as states is established.A linear state feedback control law is gained through the design of the linear quadratic regulator and replaces traditional stator flux linkage,thrust PI modules.The purpose of reducing steady-state error and thrust ripple is achieved in augmented state space model of the motor.MATLAB/Simulink simulation,simulation results show that the presented control strategy can get faster dynamic response,both reduce the thrust and flux linkage ripple effect,the designed control system can achieve better steady-state and dynamic characteristic and get good control performance.

关 键 词：直接推力控制 永磁同步直线电机 仿真 线性二次调节器 

分 类 号：TP241.3[自动化与计算机技术—检测技术与自动化装置] TN305.7[自动化与计算机技术—控制科学与工程]