摘要
研究优化制导系统性能,越肩发射空空导弹的特点,要求转向准确攻击目标。为了优化制导系统,用最优控制和H∞控制理论设计全弹道复合制导规律。根据极小值原理,在推力矢量控制下设计了以在给定的时间内,使平行于初始视线方向上的速度分量达到最大,并使终端速度最大为指标的最佳快速转弯的初制导律。对末制导律是利用H∞鲁棒控制理论设计,对目标机动不作任何限制的鲁棒制导规律;然后用这两种制导律的加速度指令为参量构造了一个连续函数作为交接班的导引规律,实现弹道的平滑过渡,并对对全制导段弹道进行数字仿真,结果表明所设计的复合制导律为优化制导系统提供了参考。
Using the optimal control and H∞ control theory,the compound guidance law of the whole trajectory is designed for over the shoulder of air-to-air missile.First,using the minimum principle,under thrust vector control,the index of the optimal turn law is demanded to maximize the velocity component in parallel director of initial sight in given time,so that its final velocity becomes maximum.Then the robust guidance law is designed using H∞ robust control theory for the terminal guidance,and the terminal guidance law does not restrict the maneuver ability of the target.Then a handing-off law is designed using the acceleration command of two guidance laws above to construct a continuous function to realize the trajectory handing-off.Finally,the whole trajectory simulation showed that the compound guidance law is satisfied.
出处
《计算机仿真》
CSCD
北大核心
2011年第4期82-86,共5页
Computer Simulation
关键词
越肩发射
最优控制
推力矢量控制
复合制导
交接班
Over the shoulder
Optimal control
Thrust vector control
Compound guidance
Handing-off
