一种无位置传感器SRM位置检测方法的研究

文章在利用ANSYS有限元分析软件得到开关磁阻电机(Switched Reluctance Motor,简称SRM)磁化曲线Ψ-i-θ的基础上,设计了一种基于模糊推理规则的电机转子位置估算方法,此方法定义磁链和电流为输入,相应的位置角为输出,把这些输入、输出数据对系列用作为训练数据,建立模糊模型。经过训练后,利用产生的模糊逻辑规则库就可以定义从输入磁链和电流到输出转子位置角的映射函数。仿真证明在电机运行的不同速度区间中,该方法均能对转子位置进行识别且具有较高的可靠性。

Study on a Sensorless Detecting Method to Measure the Position of the Switched Reluctance Motor

Based on obtained magnetic curve of SRM from ANSYS software,a method of sensorless rotor positon angle estimation is established by means of the fuzzy logic. In this method,flux and current are inputs,while angle is output,the training task involves creating a fuzzy model of this function from the training data.After training,the mapping function to define the both inputting flux current and rotor position angle can be achieved by utilizing the formed fuzzy logic rule base.The results of simulation in- dicate that the position obtained by this method is accurate at different operating conditions with high reliability.