基于新型自适应滑模观测器的PMSM无传感器控制  

Research of Position Sensorless Control of PMSM Based on Improved Adaptive Sliding Mode Observer with PLL

作　　者：王淑旺[1] 杨光 王强[1] WANG Shuwang;YANG Guang;WANG Qiang(School of Mechanical Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]合肥工业大学机械工程学院,合肥230009

出　　处：《组合机床与自动化加工技术》2024年第1期88-91,96,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：安徽省科技重大专项项目(202103a05020019)。

摘　　要：为了实现无位置传感器控制策略在永磁同步电机中的应用,在传统滑模观测器的基础上提出了一种改进型的自适应滑模观测器算法。提出的改进型自适应滑模观测器中使用更平滑的sigmoid函数取代了传统的符号函数,并结合反电动势的自适应律有效地减少了提取的反电动势中包含的高频分量,避免了低通滤波器在使用过程中带来的抖振和相位延迟现象。最后反电动势中包含的转子位置信息与速度信息通过锁相环提取。为了验证模型的可行性,基于MATLAB/Simulink搭建了仿真模型进行了仿真分析,并以TMS320F28377芯片为核心搭建了永磁同步电机硬件实验平台进行实验验证,仿真与实验结果验证了该方法的有效性和实用性。For the purpose of realizing the sensorless control strategy of permanent magnet synchronous motor(PMSM),an improved adaptive sliding mode observer(SMO)algorithm according to the classical SMO is referred.The improved adaptive sliding mode observer proposed in this paper uses a smoother sigmoid function instead of the traditional symbol function,combined with the adaptive rate of the back EMF,the high frequency component of the extracted back emf is effectively reduced,and the chattering and phase delay of the low-pass filter are avoided.Finally,the rotor position and velocity information contained in the back EMF are extracted by PLL.Stemmed from MATLAB/Simulink,the simulation model is established and analyzed,and the hardware experiment platform of PMSM is built with TMS320F28377 chip as the core,the availability and practicability of this method is testified from analysis simulation and experimental results.

关 键 词：无位置传感器 永磁同步电机 自适应滑模观测器 SIGMOID函数 锁相环 

分 类 号：TH165[机械工程—机械制造及自动化] TG659[金属学及工艺—金属切削加工及机床]