To achieve high reliability and miniaturization of the rotor position measurement of brushless motors,a non-contact magnetic rotary encoder is applied to the rotor angle detection of brushless motors.On the basis of analyzing the working principle and application characteristics of the magnetic rotary encoder,the interface and communication mode between the magnetic rotary encoder and the brushless motor digital controller are discussed.A miniaturized rotor position sensing component is designed,and an experimental platform is built and TMS320F2812 is used as the controller.The drive and control tests of brushless motor are carried out,and the results are discussed.The experimental results show that the non-contact rotor position detection method has the advantages of high measurement accuracy,fast response speed and small size,and can obtain good motor control effect with digital controller.
关键词
磁旋编码器/直流无刷电动机/数字控制器/同步串行接口/非接触位置检测
Key words
magnetic rotary encoder/BLDC motor/digital controller/synchronous serial interface(SSI)/non-contact position detection
维普
万方数据