Fault diagnosis and fault tolerant control for a class of nonlinear singular systems
Fault diagnosis and fault tolerant control for a class of nonlinear singular systems
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DOI：
10.1109/icca.2010.5524262
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发表时间：
2010-06
期刊：
影响因子：
--
通讯作者：
L. Yao;V. Cocquempot
中科院分区：
文献类型：
--
作者：
L. Yao;V. Cocquempot
本文通过使用自适应更新规则为一类非线性奇异系统开发了一种新的故障检测和诊断方法。建立了检测和诊断观察者，其中使用Lyapunov稳定性理论来获得所需的自适应调整规则以估计执行器断层。这导致了用于故障检测和诊断的稳定观察错误系统。基于故障估计信息，可以构建重新配置控制器以保持违反后系统稳定，从而导致对非线性单数系统的主动容错控制。包括一个模拟的数值示例，以证明所提出的方法的使用并获得了令人鼓舞的结果。
A new fault detection and diagnosis approach is developed in this paper for a class of nonlinear singular systems via the use of adaptive updating rules. Both detection and diagnostic observers are established, where Lyapunov stability theory is used to obtain the required adaptive tuning rules for the estimation of the actuator faults. This has led to stable observation error systems for both fault detection and diagnosis. Based on the fault estimation information, a reconfiguration controller can be constructed to keep the post-fault system stable, leading to active fault tolerant control of the nonlinear singular system. A simulated numerical example is included to demonstrate the use of the proposed methods and encouraging results have been obtained.