摘要
针对异步感应电动机无速度传感器情况下的速度辨识问题,将模型参考自适应(MRAS)方法用于感应电动机矢量控制系统中,提出一种利用电动机定子电流构造转速辨识模型的方法,这种方法不含积分环节,并且对电动机参数的依赖性小,能够通过电动机的可测量较好的辨识电机转速。最后在推导和分析的基础上通过MATLAB/SIMULINK对系统进行了建模和仿真研究,结果表明,此控制系统具有较好的辨识精度,并且对定子电阻有较强的鲁棒性,在实际工程中有一定实用价值。
Model reference adaptive system(MRAS)is used in vector control system of induction motor without speed sensors.A method of speed identification by stator current is presented.It does not contain any integrators in the system and has little reliant to the motor parameters. Then the system model is established and simulated in MATLAB/SIMULINK based on the system analysis.The result shows that this speed-sen- sorless system of vector control has preferably precision and robustness for stator resistance,so it can be used in practical project.
出处
《控制工程》
CSCD
2007年第S3期189-191,共3页
Control Engineering of China
