自适应时变滑模再入姿态控制设计  

Design of Adaptive Time-Varying Sliding Mode Reentry Attitude Control

作　　者：韩嘉俊 王小虎[3] 吴旭忠 HAN Jia-jun;WANG Xiao-hu;WU Xu-zhong(Beijing System Design Institute of Electro-Mechanic Engineering, Beijing 100854,China;The Second Research Academy of CASIC, Beijing 100854,China;Beijing Institute of Control and Electronic Technology,Beijing 100038,China)

机构地区：[1]北京机电工程总体设计部,北京100854 [2]中国航天科工集团有限公司第二研究院,北京100854 [3]北京控制与电子技术研究所,北京100038

出　　处：《现代防御技术》2018年第2期62-67,共6页Modern Defence Technology

摘　　要：为了提高再入控制鲁棒性和适应性,结合高阶滑模观测器提出一种基于反馈线性化的时变滑模控制方法。首先,根据时变滑模面推导出控制律,引入了自适应算法获得控制律中的切换增益,消除了对系统不确定性上界已知这一条件的依赖;其次,利用高阶滑模观测器对姿态角导数信息进行观测,同时获得系统扰动估计值,消除了控制器对较难直接测量的姿态角导数信息的依赖。最后,通过数值算例验证了所提控制方法的有效性。To improve system＇s robustness and the adaptability of entry control,a time-varying sliding mode control method based on feedback linearization is introduced. According to the time-varying sliding mode surface,the control algorithm is proved. To avoid the dependence on uncertain upper boundary,the control gain is switched by the self-adaptive algorithm. The derivative information of attitude angle and estimated value of system disturbances are acquired by utilizing the high-order sliding mode observer. The control algorithm is proved satisfactory performance by analyzing simulation examples.

关 键 词：姿态控制 时变滑模 自适应 滑模观测器 再入控制 增益切换 鲁棒控制 

分 类 号：V529.1[航空宇航科学与技术—人机与环境工程] TJ765.2[兵器科学与技术—武器系统与运用工程]