基于变参数控制的复合导引头伺服系统设计

Design of Compound Seeker Servo System Based on Variable Parameter Control

针对可见光和红外复合制导导引头在不同的工作模式下,因探测器分辨率、视场角及光学设计指标的不同导致两种模式输出的跟踪偏差信息存在较大差别的问题,提出了一种变参数复合导引头PID控制方案。首先,通过分析导引头的伺服控制系统工作原理;然后,建立位置环、速度环、电流环控制回路模型;最后,对常规控制方法和复合导引头变参数PID控制方案进行仿真分析比较。结果表明,采用变参数复合导引头PID控制方案能提有效升复合导引头动态性能,上升时间缩短了50 ms,超调量下降了5%;稳态时间缩短了90 ms。

In view of the visible light and infrared composite guidance seeker under different operating modes,Due to the difference of detector resolution,field Angle and optical design index,the tracking deviation information output of the two modes is quite different,A PID control scheme of compound seeker with variable parameters is presented.Firstly,by analyzing the working principle of the servo control system of the seeker,the control loop models of position loop,speed loop and current loop are established.Secondly,the conventional control method and the compound seeker variable parameter PID control scheme are simulated and compared.The results show that the PID control scheme of the compound seeker with variable pa-rameters can improve the dynamic performance of the compound seeker and reduce the tracking error.The rise time increased by 50 ms,and the overshoot decreased by 5%;Steady state time accelerated by 90 ms.