直行程电子式电动执行器控制器的设计

Design of Direct Stroke Electric Actuator Controller

为了提高电动执行器的控制精度和解决小步长控制电机振荡的问题,基于32位ARM高速处理器设计一套高精度直行程电子式电动执行器控制器。首先,为提高控制器的抗干扰能力,避免采集的信号失真,在硬件电路设计上采用二阶RC滤波电路,在软件程序设计上采用中值滤波和去极值均值滤波算法;其次,为了克服电机惯性的影响,提出一种自适应学习控制算法,能有效避免电动执行器调节过程中的小步长振荡,提高其控制精度。目前,研制的控制器已经量产。结果表明,该控制器精度高、可靠稳定,满足工业现场使用要求。

In order to improve control precision of electric actuator and solve the problem of the small step control motor concussion,a set of direct stroke electronic electric actuator controller which has high precision was designed with 32-bit ARM.Firstly,in order to improve the anti-interference ability of the controller,two order RC filter circuit was designed to avoid distortion of sampling signal,besides algorithm of median filter and extreme mean filter was programmed to improve anti-interference level of the controller.Secondly,a kind of adaptive learning control algorithm was proposed to eliminate influence of motors＇ inertia.Problem of motor oscillation during adjusting process was solved effectively and control precision of electric actuator was improved greatly.At present,the designed controller has already been in mass production.The results indicate that the controller has high precision and reliability which can meet industrial demand.