快速反射镜系统的扰动抑制控制研究

The Research of Disturbance Rejection Control for Fast Steering Mirror System

快速反射镜(Fast Steering Mirror,FSM)作为惯性稳定平台的精跟踪控制系统,能够进一步提高惯性稳定平台的视轴稳定精度。针对FSM在工作过程中受到的外界风力干扰、载机姿态变化和内部摩擦力等多源扰动,设计基于干扰观测器(Disturbance Observer,DOB)的抗扰控制方法。先建立FSM的数学模型,对实体快反镜进行模型辨识,然后设计基于干扰观测器的速度环扰动抑制控制方法。通过仿真实验验证了所设计干扰抑制方法的有效性,可为扰动抑制方法的工程应用奠定基础。

Fast Steering Mirror(FSM),as a fine tracking control system for inertial stabilized platform,can further improve the line of sight stabilization accuracy of inertial stabilized platform.The Disturbance Observer(DOB)based disturbance rejection control method is designed for the multi-source disturbances such as external wind disturbance,carrier attitude change and internal friction during the operation of FSM.Firstly,the mathematical model of FSM is established,and the model identification of the solid FSM is carried out,based on which the DOB-based velocity loop disturbance suppression control method is designed.The effectiveness of the designed disturbance suppression method is verified by simulation experiments,which lays the foundation for the application of the disturbance suppression method in engineering.