一种再入飞行器鲁棒控制器软切换方法  

Method for soft switching of re-entry vehicle's robust controllers

作　　者：罗建军[1,2] 常江[1,2] 王章磊[1,2] 闵昌万 黄兴李 

机构地区：[1]西北工业大学航天学院,陕西西安710072 [2]航天飞行动力学技术国家重点实验室,陕西西安710072 [3]空间物理重点实验室,北京100076

出　　处：《飞行力学》2014年第4期329-333,共5页Flight Dynamics

基　　金：国家自然科学基金资助(61004124)

摘　　要：为研究再入飞行器大包线鲁棒控制系统设计,提出了一种再入飞行器鲁棒控制器软切换方法。首先,采用μ综合鲁棒控制方法设计了再入飞行器大包线姿态控制系统;然后考虑到多模型鲁棒控制中飞行包线上不同工作区对应控制器的切换问题,提出了一种结合软化环节的基于实时姿态信息赋值的鲁棒控制器软切换方法;最后进行了再入飞行器偏航/滚转通道μ综合鲁棒控制器切换仿真,仿真结果验证了所提出的再入飞行器鲁棒控制器切换方法的有效性。A new soft switching method for robust controllers was proposed for the study of the control system designing of the re-entry vehicle in the wide flight envelope. Firstly,attitude control system was designed using the μ-synthesis theory. Then,considering the switching problem of the robust controllers designed for different work spaces in the flight envelope,a new soft switching method was proposed by a combination of the structure for softening and the evaluation based on real-time attitude angle. Finally,the proposed new method was adapted to robust controllers switching for the re-entry vehicle and the simulation results prove the effectiveness of the new method.

关 键 词：再入飞行器 多模型鲁棒控制 Μ综合控制 软切换 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计]