基于变增益扩张状态观测器的永磁同步电机转速环自抗扰控制器设计  

Design of Active Disturbance Rejection Controller for PMSM Speed Loop Based on Time-Varying Gain Extended State Observer

作　　者：王发良 曾岳南[1] 谢传林 许小龙[1] 沈志峰 WANG Faliang;ZENG Yuenan;XIE Chuanlin;XU Xiaolong;SHEN Zhifeng(School of Automation,Guangdong University of Technology,Guangzhou 510006,China)

机构地区：[1]广东工业大学自动化学院,广东广州510006

出　　处：《电机与控制应用》2018年第11期56-60,共5页Electric machines & control application

摘　　要：线性扩张状态观测器(LESO)在观测初始阶段,系统状态量实际值与估计值误差较大。由于LESO高增益的影响,导致LESO在初始时刻的扰动估计输出出现很大的峰值,而且观测器增益越大,峰值现象越严重。针对上述问题,设计了一种变增益扩张状态观测器(TESO),其增益是一个时变函数,在初始时刻为较小的函数值,随着时间逐渐增大,直至趋于一个较大常数。利用李雅普诺夫变换和微分代数谱理论给出了参数整定公式。将线性自抗扰控制器(LADRC)中的扩张状态观测器替换为TESO,并将其应用于永磁同步电机转速控制中,计算机仿真和系统试验验证了该控制器设计的有效性。The difference between the actual value and the estimated value of the system variable was large in the initial stages of observation using linear extended state observer(LESO).Since the gain of LESO was large,there was obvious peaking phenomenon,which affected the measurement of the disturbance.The larger the gain of the observer,the more severe of the peaking phenomenon.In order to solve the problems,a time-varying gain extended state observer(TESO)was designed.Its gain was a time varying function,which was a smaller value at the initial time,and then the function value increased with time to a larger constant.The parameters tuning formula was given based on Lyapunov transform and differential algebraic spectral theory.Replacing the extended state observer in the linear active disturbance rejection controller(LADRC)with TESO,the controller was applied to the speed control of permanent magnet synchronous motor regulation system.The effectiveness of the controller design was verified by the simulation and experimental results.

关 键 词：永磁同步电机 自抗扰控制器 变增益扩张状态观测器 参数整定 

分 类 号：TM351[电气工程—电机]