摘要
研究了反作用飞轮的故障诊断问题.针对反作用飞轮的非线性数学模型,分析了其故障模式,建立了故障的参数化描述方法,并在此基础上提出了一种基于参数自适应投影的反作用飞轮故障诊断方法,通过构造观测器,利用参数自适应投影算法更新参数信息,以保证观测器稳定及与故障相关的参数收敛到其真值.最后对飞轮的各种故障模式进行了仿真,结果表明提出的方法有效可行.
The design of fault diagnosis for reaction wheel(RW) is presented in this paper.First,based on nonlinear RW mathematic model,the failure modes of RW is analyzed and a parameterized description for fault is established.By using an adaptive algorithm with projection,the observer for fault diagnosis of RW is brought forward then.The parameters are updated by the adaptive algorithm,which ensure the observer to be stable and the parameters related to fault converge to the actual value.Finally numerical simulations with the entire failure modes demonstrate that the proposed approach is effective and feasible.
出处
《华中科技大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
2009年第S1期184-186,193,共4页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(60874055)
关键词
故障诊断
自适应算法
投影
故障模式
飞轮
fault detection
adaptive algorithms
projection
failure modes
wheels