基于TNESO的PMSLM分数阶自抗扰控制  

Fractional-Order Active Disturbance Rejection Controller of PMSLM Based on TNESO

作　　者：林健[1] 孙冀婷 周磊[1] 张树龙 姜武杰 LIN Jian;SUN Jiting;ZHOU Lei;ZHANG Shulong;JIANG Wujie(Key Laboratory of Advanced Numerical Control Technology of Jiangsu Province,Nanjing Institute of Technology,Nanjing Jiangsu 211167,China)

机构地区：[1]南京工程学院,先进数控技术江苏省高校重点建设实验室,江苏南京211167

出　　处：《机床与液压》2024年第8期14-18,共5页Machine Tool & Hydraulics

基　　金：国家自然科学基金项目(62203211);江苏省高等学校自然科学研究重大项目(20KJA460010);南京工程学院创新基金重大项目(CKJA202104)。

摘　　要：线性自抗扰控制(LADRC)以结构简单、易于实现且抗干扰能力强的特点在永磁同步直线电机(PMSLM)中得到广泛应用,但电机启动和负载突变会导致LADRC系统中的线性扩张状态观测器(LESO)扰动估计精度下降。为此,提出一种基于时变增益非线性扩张状态观测器(TNESO)的PMSLM分数阶自抗扰控制策略。结合LESO和非线性扰动观测器(NDOB),并根据误差与增益的关系构建动态增益函数,设计新型状态观测器TNESO;在此基础上,以分数阶PDμ控制律代替线性状态误差反馈控制律(LSEF),建立改进型自抗扰速度控制系统,以进一步提高电机控制的实时性和鲁棒性。仿真与实验结果表明:所设计的速度控制系统可以有效减少直线电机启动、负载突变时的观测响应时间,抑制观测初始时刻扰动峰值,从而满足高性能的PMSLM速度控制要求。The linear active disturbance rejection control(LADRC)is widely used in permanent magnet synchronous linear motors(PMSLM)due to its simple structure,easy implementation and strong anti-interference ability.However,the motor start-up and load mutation will lead to the decrease of the disturbance estimation accuracy of linear extended state observer(LESO)in LADRC system.Therefore,a PMSLM fractional order active disturbance rejection control based on time-variable gain nonlinear extended state observer(TNESO)was proposed.Combining LESO with nonlinear disturbance observer(NDOB),a dynamic gain function was constructed according to the relationship between error and gain,and a new state observer TNESO was designed;on this basis,the fractional order PDμcontrol law was used to replace the linear state error feedback control law(LSEF),and an improved active disturbance rejection speed control system was established,to further improve the real-time and robustness of motor control.The simulation and experimental results show that the designed speed control system can effectively reduce the observation response time when the linear motor starts and the load changes suddenly,and suppress the disturbance peak at the initial observation time,so as to meet the high-performance PMSLM speed control requirements.

关 键 词：永磁同步直线电机 线性自抗扰控制 时变增益非线性观测器 分数阶控制律 

分 类 号：TM359.4[电气工程—电机]