Nonlinear adaptive observer-based fault diagnosis for satellite actuator

摘要：

The multi-fault mode of satellite actuators is researched and numbers of unknown parameters are used as fault indicators. Applying Lypunov method, the problem of adaptive state observer design for nonlinear systems with unknown parameters is dealt with. The nonlinear object is firstly linearized into Lipschitz system. Then by analyzing the sufficient condition for asymptotic convergence of the observer, the structure of observer and the adaptive laws for parameter estimations are given. Finally, the adaptive observer is employed to estimate the faults of satellite actuator. Numerical simulation results show that this method is effective and able to quickly detect faults.

关键词： satellite actuator Fault diagnosis nonlinear system adaptive observer

作者: Wang Zhi Shi Jun

作者单位: Computer Science and Engineering College Xian Technological University Xian 710032, China

会议类型: 国际会议

会议名称: 2010 International Conference on Measurement and Control Engineering(2010年IEEE测量与控制工程国际会议 ICMCE2010)

会议地点: 成都

会议语种:英文

页码: 276-279

在线出版日期: 2010-11-16（万方平台首次上网日期，不代表论文的发表时间）