基于Mlx90316的电-机械转换器角位移测控系统

为提高电液伺服控制系统的响应速度和精度,将角位移测控技术应用到电-机械转换器控制闭环中,增加步进电机位置信号作为控制参数,实现了位置闭环控制。开展了基于霍尔技术位移测量技术的研究及其解码原理的分析;根据Mlx90316芯片的时序要求,设计了一种电-机械转换器角位移测控系统,实现了角位移的非接触式测量;测控系统以TMS320F2812 DSP作为主控器,开发了相关功能模块,进行了位移闭环PID控制策略的研究,以及软硬件的设计与测试,实现了步进电机的位置反馈与闭环控制。测试结果表明,该系统测量速度可达2 800 fp/s,精度可达12 bit,系统具有测速范围宽、控制精度高等特点。

Angular position test system of electromechanical convertor based on Mix90316

In order to improving the response speed and accuracy of the electro-hydraulic servo control system, the angular position test technique was investigated into the closed-loop control of the electromechanieal converter. The signal of the stepper motor＇s position was added as the control parameter, and the position closed-loop control was made.After the analysis of Hall＇s angular position test and decoding technique, according to the timing requirements of Mlxg0316, a non-contact angular position test system of the electromechanical convertor was established. Within the TMS320F2812 DSP as the master controller,the related functional modules were developed, the PID control strategy was used, the software and the hardware were done, a system that has stepper motor＇s position feedback and control circuit was built. The results show that the test speed is 2 800 fp/s, and the accuracy is as high as 12 bit. The system fits wide speed range and has high measurement speed and accuracy.