无轴承异步电机的无速度传感器与容错控制分析

Analysis of Speedless Sensor and Fault-tolerant Control of Bearingless Induction Motor

阐述在线估计转子电阻的方法,通过电压型转子磁链模型估计转子磁链,根据无轴承异步电机模型推出包含转子电阻的表达方式,得到转子电阻与转速的解析式,构建无速度传感器的控制系统。

This paper describes the method of on-line estimation of rotor resistance.The rotor flux is estimated through the voltage type rotor flux model.According to the bearingless asynchronous motor model,the expression of rotor resistance is derived,and the analytical expression of rotor resistance and speed is obtained.The speed sensorless control system is constructed.