拦截弹自适应最优滑模制导和控制一体化设计

Design of Integrated Adaptive Optimal Sliding-Mode Guidance and Control for Interceptor

针对传统制导和控制分开设计在拦截高速机动目标时的缺陷,设计了一种自适应最优滑模制导和控制一体化算法。首先基于零化视线角速率的思想,建立了制导和控制一体化模型;然后选取视线角速率为滑模面,结合HOSM鲁棒精确微分器参数,提出了一种最优滑模一体化制导和控制算法;最后设计了一种不确定性上界的自适应估计算法。仿真结果表明,与传统的制导和控制分开设计相比,所设计的一体化方法使得拦截弹具有更小的脱靶量,且姿态变化更加平稳。

With considering the disadvantages of traditional two-loop guidance and control system against highly maneuverable targets, an integrated adaptive optimal sliding mode guidance and control algorithm is derived. Firstly, integrated guidance and control （IGC） model is given based on the principle of zeroing the rate of line of sight （LOS）. Then, choosing the rate of LOS as sliding-mode surface and combining the parameters of HOSM robust differentiator, the optimal sliding-mode control algorithm is derived. And finally, an adaptive estimation algorithm for the upper bound estimation of uncertainty is designed. Simulation results show that the IGC method can make the interceptor get smaller miss distance and more smoothly changes of attitude than the traditional two-loop design.