摘要
针对卫星姿态控制系统中的执行机构和敏感器故障问题,将系统不确定性参数作为在线估计自适应参数,并考虑系统故障检测与诊断结果的不确定性,基于逆最优原理采用积分反推方法求解辅助系统的自适应控制Lyapunov函数,设计了能够确保原系统鲁棒稳定的自适应逆最优控制器并给出了详细的证明。最后进行了数学仿真,仿真结果表明文中设计的容错控制方法合理有效。
The robust adaptive inverse optimal fault-tolerant control problem of satellite attitude control system was studied. Considering the faults of actuators and sensors and uncertainty in fault detection and diagnosis （FDD）, the adaptive inverse optimal fault-tolerant controller was designed by using the uncertainty parameter as the on-line estimated adaptive parameter. The design of the adaptive inverse optimal fault-tolerant controller was based on the inverse optimal principle to solve the adaptive control Lyapunov function （ACLF） of auxiliary system. The robustness of system under fault conditions was proved. The simulations validate that this solution is effective and more suitable for on-board real-time computation.
出处
《中国空间科学技术》
EI
CSCD
北大核心
2008年第2期35-41,共7页
Chinese Space Science and Technology
基金
973国家安全重大基础研究(5131201)
863国家高技术支持(2002AA715021)资助项目
关键词
逆最优
积分反推
鲁棒容错控制
自适应控制
卫星姿态控制
Inverse optimal Integrator backstepping Robust fault-tolerant control Adaptive control Satellite attitude control
