基于奇异摄动与反馈线性化的滑翔制导律

针对高超声速再入飞行器最远距离滑翔制导关键技术,设计了一种新型制导律.首先,利用奇异摄动理论对再入飞行器状态变量进行两个时间尺度的划分,将系统状态方程分解成两个低维子系统.然后,应用最优控制理论得出慢时间尺度上的解,并将其作为降维后的最优参考轨迹;在此基础上,利用非线性微分几何反馈线性化方法,设计快时间尺度制导指令,实...

Gliding Guidance Law Based on Singular Perturbation and Feedback Linearization

A novel guidance law is devised for developing the guidance technology of optimal glide of a hypersonic reentry vehicle.Firstly,the state variables of the reentry vehicle are decomposed into two sub-systems of different time scales using the singular perturbation theory.Then,through solving the slow time-scale problem by optimal control theory,the optimal reduced-order reference trajectory is obtained.Furthermore,the tracking law in the fast time-scale model is designed using the feedback linearization meth...