基于PID控制器的无轴承异步电机控制策略研究

Research on Control Strategy of Bearingless Asynchronous Motor Based on PID Controller

无轴承异步电机(Bearingless Induction Motor,BIM)具有摩擦小、无需润滑、运转速度高等优点,具有重要的研究和应用价值。但是相对于传统异步电机,无轴承异步电机的数学模型是一个强耦合、多变量、非线性的高阶函数,导致其控制策略相对复杂。为此,本文研究了一种基于PID控制器的无轴承异步电机气隙磁场定向控制策略,对其控制原理和实现方法进行了详细的论述,采用Matlab仿真软件对其有效性进行了验证,并基于TMS320F28335搭建了实验平台,对控制效果进行了验证。

Bearingless Induction Motor(BIM)has important research and application value due to its advantages of low friction,no need for lubrication,and high operating speed.However,compared to traditional asynchronous motors,the mathematical model of BIM is a strongly coupled,multivariate,and nonlinear high-order function,resulting in relatively complex control strategies.Therefore,this article studied a BIM air gap magnetic field orientation control strategy based on PID controller,and discussed its control principle and implementation method in detail.Its effectiveness was verified using Matlab simulation software,and an experimental platform was built based on TMS320F28335 to verify the control effect.