Robust sliding mode observer-based actuator fault detection and isolation for a class of nonlinear systems
Robust sliding mode observer-based actuator fault detection and isolation for a class of nonlinear systems
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DOI：
10.1080/00207720701778395
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发表时间：
2005-12
期刊：
影响因子：
--
通讯作者：
Xing-gang Yan;C. Edwards
中科院分区：
文献类型：
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作者：
Xing-gang Yan;C. Edwards
针对一类不确定非线性系统，提出了一种执行器故障检测与隔离方案。允许不确定性具有作为状态变量的一般函数的非线性界。首先基于约束Lyapunov方程建立滑模观测器。然后，利用滑模观测器的特性和不确定性的结构，利用等效输出误差注入信号重构故障信号。最后，通过对HIRM飞机系统的仿真研究，验证了该方案的有效性。
In this paper, an actuator fault detection and isolation scheme for a class of nonlinear systems with uncertainty is considered. The uncertainty is allowed to have a nonlinear bound which is a general function of the state variables. A sliding mode observer is established first based on a constrained Lyapunov equation. Then, the equivalent output error injection signal is employed to reconstruct the fault signal using the characteristics of the sliding mode observer and the structure of the uncertainty. Finally, a simulation study of the HIRM aircraft system is presented to show the effectiveness of the scheme.