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Journal of Control Science and Engineering
Volume 2015, Article ID 985135, 6 pages
Research Article

Robust Fault Diagnosis Algorithm for a Class of Nonlinear Systems

Henan Mechanical and Electrical Engineering College, Xinxiang 453002, China

Received 2 March 2015; Accepted 7 October 2015

Academic Editor: James Lam

Copyright © 2015 Hai-gang Xu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A kind of robust fault diagnosis algorithm to Lipschitz nonlinear system is proposed. The novel disturbances constraint condition of the nonlinear system is derived by group algebra method, and the novel constraint condition can meet the system stability performance. Besides, the defined robust performance index of fault diagnosis observer guarantees the robust. Finally, the effectiveness of the algorithm proposed is proved in the simulations.