一种复合式变结构MRAS无速度传感器转速辨识  

A Compound Variable-structure MRAS Speed Identification for Speed Sensorless

作　　者：张斌[1] 袁亮[1] 张增华[1] ZHANG Bin YUAN Liang ZHANG Zeng-hua(Lanzhou Jiao Tong University, Lanzhou 730070, Chin)

机构地区：[1]兰州交通大学,自动化与电气工程学院,甘肃兰州730070

出　　处：《电力电子技术》2017年第3期78-80,共3页Power Electronics

摘　　要：采用变结构滑模技术和自适应控制理论,提出一种新型复合式滑模变结构模型参考自适应系统(MRAS)无速度传感器转速观测器。该方法利用转子磁链电压和电流两个模型输出的偏差构造了复合切换函数,对其存在性和可达性给予证明,采用代数方法确定等效速度。分别对系统的空载加速运行和加载阶跃响应进行了仿真分析,结果表明所提复合式变结构MRAS速度观测器动态性能良好,实验结果表明此系统正确可行且满足控制需求,具有实用工程价值。Based on the variable-structure sliding mode control method and the adaptive control theory,a new compound sliding mode variable-structure model reference adaptive system （MRAS） speed observer is proposed.In this method, the compound switching function is constructed according to the output errors of the rotor flux voltage model and current model, and its existence and accessibility are proved ,the estimated speed is calculated by using algebraic method.That has one simulation analysis on no-load acceleration phase and load step response of the system, the results show that the proposed compound variable-structure MRAS speed observer has good dynamic performance.Experimental results show that the system is feasible and meets the control requirements, it has practical engineering value.

关 键 词：无速度传感器 滑模变结构 模型参考自适应系统 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]