Design of high-gain observers with sliding mode for the actuator robust fault detection of nonlinear system

被引：2

作者：

Liu, Cong ^{[1
]}

Li, Ying-Hui ^{[1
]}

机构：

[1] Aeronautics and Astronautics Engineering Institute, Air Force Engineering University, Xi'an

来源：

Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics | 2014年 / 36卷 / 08期

关键词：

Diffeomorphism; Fault detection; High-gain observer; Sliding mode;

D O I：

10.3969/j.issn.1001-506X.2014.08.28

中图分类号：

学科分类号：

摘要：

The hign-gain observer with sliding mode used for the actuator robust fault detection is designed for the simulating mapped nonlinear system with unknown disturbances. Firstly, the system is transformed into a whole standard observed system by means of global diffeomorphic coordination transformation. Then, according to the transformed system with the Lipschitz item, the high-gain observer with sliding mode is designed, the calculating method of plus gene is presented and the condition of convergence on the state error of the observer is put forward and proved according to Lyaponov stable theories. Meanwhile, the sliding control item is designed to restrain the effect of disturbances and the condition of convergence on the sliding which makes the observer robust is presented and testified. Finally, an example of a three order motor model is given to testify the effectiveness of the proposed method.

引用

页码：1626 / 1631

页数：5

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