摘要
研究反作用飞轮(RW)在故障情形下的三轴稳定卫星姿态控制系统的在线故障诊断、辨识和重构(FDIR)问题。首先针对RW数学模型,分析其故障模式,并建立故障的参数化描述方法。系统采用局部故障诊断与辨识(FDI)方法对飞轮进行故障诊断,其诊断结果为与飞轮故障相关的参数。重构控制器的设计以动态逆为基础,并引入飞轮数学模型,对飞轮的故障进行补偿。最后,针对卫星姿控系统的3种典型故障模式的仿真结果表明该FDIR方法有效可行。
The design of on-line fault detection, identification and reconfiguration(FDIR) for three-axis-stabilized satellite attitude control system with reaction wheel(RW) fault was presented. Firstly, the fault pattern of RW was analyzed and a parameterized description for fault was established based on its dynamic model. Then, local FDI was used to diagnose the fault of RW by parameter identification. Based on the method of dynamic inversion, by introducing the model of reaction wheel, the reconfigurable controller was obtained to deal with RW fault. Finally, numerical simulation results with three fault patterns demonstrate that the proposed approach is effective and feasible.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第S1期191-199,共9页
Journal of Central South University:Science and Technology
基金
国家自然科学基金资助项目(60874055)
关键词
容错控制
故障诊断与辨识
重构
动态逆
飞轮
fault tolerant control
fault detection and identification
reconfiguration
dynamic inversion
wheels
