高超声速飞行器的滑模观测器设计

对一个高超声速飞行器设计了滑动模态观测器来估计攻角和航迹倾角。通过实时的求解一个极点配置问题,使观测器的切换增益能够根据观测器状态的变化而改变,从而保证了观测误差的动态特性在整个飞行包线内的一致性,给出了单输出和多输出非线性系统的滑模观测器设计过程。设计和仿真算例验证了这种方法的有效性。

Sliding-Mode Observer Design for a Hypersonic Vehicle

A sliding mode observer is designed to estimate the angle of attack and flight path angle for a hypersonic vehicle. By solving an eigenvalue assignment problem in real time, the switching gains of the observer on the sliding surface are determined according to observer states and desired dynamic performance. Hence uniform dynamic performance of observer can be guaranteed in the full flight envelope. The design procedures for both single-output and multi-output nonlinear systems are presented. Application of the observer to a benchmark hypersonic vehicle to demonstrate its construction and performance is also presented.