Abstract:

 With the advent of the information age, satellite communications play an increasingly important role. As a typical representative of this field, SOTM (Satellite communication on-the-move) system has been widely used. Based on the analysis and study of servo control subsystem of the vehicle SOTM, a stepper motor servo control system is designed. The mathematic model of the actuator in the system is established by using the system identification toolbox in MATLAB. The servo system is simulated in MATLAB/Simulink. The speed-position dual closed-loop PID with disturbance compensation control algorithm is designed. The experimental results show that the proposed stepping motor servo control system can significantly suppress the disturbance of the carrier and meets the performance requirements.

Key words: SOTM, stepper motor, system identification, PID, disturbance compensation

摘要： 随着信息时代的到来，卫星通信发挥着越来越重要的作用。“动中通”系统作为该领域的典型代表，得到了广泛的应用。在对车载“动中通”伺服系统进行了分析和研究之后，设计了一种步进电机伺服控制系统。通过系统辨识工具箱建立了该系统中执行机构的数学模型，并在Simulink在中对伺服系统进行了仿真，设计了速度-位置双闭环PID-扰动补偿的复合控制算法，并应用到实际当中。实验表明，所设计的步进电机伺服控制系统能抑制载体的扰动，动态性能良好，满足性能指标要求。

关键词: “动中通”；步进电机；系统辨识, PID；扰动补偿