摘要
为精确实现对永磁同步电动机转速的辨识,提出一种基于变结构MRAS的转速识别方法,通过建立PMSM的数学模型,以电机本体作为参考模型,采用定子电流作为可调模型的方法,在参考模型自适应的基础上,加入滑模变结构控制,设计滑模观测器。在MATLAB/Simulink中对整个永磁同步电动机无速度传感器模型参考自适应系统进行仿真试验,通过对转子实际转速和估计转速曲线的观测和比对,以及对转速误差曲线分析,得出该系统能够精准估算出转子转速,具有较好的静态性能的结论。
Aiming at identifying motor speed of the permanent magnet synchronous motor in an accurate manner,a method based on variable structure MARS is proposed.The sliding-mode observer is designed and the sliding mode variable structure is added by establishing mathematical models of PMSM,using the motor as a reference model,and adopting stator current as an adjustable model.In the MATLAB/Simulink,make an emulation test for the adaptive system of the nosensor controller in PMSM model.Through observation and analysis of the rotator＇s actual speed and the estimated speed curve,a conclusion is drawn that this system can accurately estimate rotor speed with static performance.
出处
《电子测量技术》
2017年第7期40-42,47,共4页
Electronic Measurement Technology
关键词
无速度传感器
永磁同步电动机
变结构
模型参考自适应系统
speed-sensor-less
permanent magnet synchronous motor
variablestructure
model reference adaptive system
