动能拦截器姿态控制与振动的若干问题

Analysis of Attitude Control and Elastic Vibration of Kinetic-kill Vehicle

动能拦截器姿态控制采用发动机产生的脉宽调制的脉冲力,容易诱发弹体产生弹性振动,拦截器的弹性振动信号会被弹上敏感元件测量到,并被引入制导控制闭环回路,形成反馈作用,使控制系统的动态品质变差,甚至会因失稳而导致拦截失败。因此研究末制导拦截器的弹性振动与控制的耦合问题,以及将弹性振动引入控制系统的方法,对拦截器的精确控制具有重要意义。

The factors are studied which lead to a disturbance of abnormal frequency added into the gyro-output signal during the control section flight of the KKV in some special conditions. Analysis the coupling system of attitude and control of KKV considered elastic vibrancy,simulink the model of KKV,the results show that elastic vibrancy has obviously effect on attitude control system.