基于改进型滑模观测器的PMSM无位置传感器控制  

Sensorless Control of Permanent Magnet Synchronous Motor Based on the Improved Sliding Mode Observer

作　　者：华志广[1] 窦满峰[1] 赵冬冬[1] 颜黎明[1] 姬军鹏[2] 杨剑威[1] Hua Zhiguang;Dou Manfeng;Zhao Dongdong;Yan Liming;Ji Junpeng;Yang Jianwei(School of Automation,Northwestern Polytechnical University,Xi＇an 710072,China;China 2.School of Automation and Information Engineering,Xi＇an University of Technology,Xi＇an 710048,Chin)

机构地区：[1]西北工业大学自动化学院,陕西西安710072 [2]西安理工大学自动化与信息工程学院,陕西西安710048

出　　处：《西北工业大学学报》2018年第4期754-760,共7页Journal of Northwestern Polytechnical University

基　　金：国家自然科学基金(51507143);中央高校基本科研业务费(3102017zy014);陕西省高校科协青年人才托举计划资助

摘　　要：针对经典滑模观测器在永磁同步电机无位置传感器控制过程中的抖振问题,研究了一种改进型滑模观测器。分析了经典滑模观测器产生抖振的原因,采用饱和函数代替符号函数实现抖振的抑制,结合磁场定向控制技术实现永磁同步电机的转速估计,在1台2.7 kW,10 000 r/min的永磁同步电机硬件平台上进行实验验证。仿真分析和实验结果表明,改进后的滑模观测器能够准确估计转速并减弱转子位置估计过程中的抖振。Sliding mode observer （SMO） which has a strong robustness is used in the sensorless control system of permanent magnet synchronous motor （PMSM）. The method is usually used to estimate the rotor position although it has the chattering problem. According to the causes of the chattering in traditional SMO, the method of improved sliding mode observer （ISMO） is proposed in this paper. Sign function is replaced by the saturation function to sup- press the chattering problem, and the speed of PMSM is estimate when combined with field oriented control （ FOC ） method. A hardware platform of 2.7 kW, 10 000 r/min PMSM is built to verify the control effectiveness of ISMO. Simulation analysis and experimental result show that ISMO can estimate the rotor speed accuracy and reduce the chatting at the same time.

关 键 词：永磁同步电机 无位置控制 滑模观测器 抖振 实验设计 

分 类 号：TM341[电气工程—电机] TM301.2