Evaluation of fault diagnosability for nonlinear uncertain systems with multiple faults occurring simultaneously  

作　　者：LIN Lixiong WANG Qing HE Bingwei PENG Xiafu 

机构地区：[1]School of Mechanical Engineering and Automation,Fuzhou University,Fujian 350000,China [2]Department of Automation,Xiamen University,Xiamen 361005,China

出　　处：《Journal of Systems Engineering and Electronics》2020年第3期634-646,共13页系统工程与电子技术（英文版）

基　　金：the Natural Science Foundation of Fujian Province,China(2019J05024);the Education Department Foundation of Fujian Province,China(JAT170091).

摘　　要：Up to present,the problem of the evaluation of fault diagnosability for nonlinear systems has been investigated by many researchers.However,no attempt has been done to evaluate the diagnosability of multiple faults occurring simultaneously for nonlinear systems.This paper proposes a method based on differential geometry theories to solve this problem.Then the evaluation of fault diagnosability for affine nonlinear systems with multiple faults occurring simultaneously is achieved.To deal with the effect of control laws on the evaluation results of fault diagnosability,a design scheme of the evaluation of fault diagnosability is proposed.Then the influence of uncertainties on the evaluation results of fault diagnosability for affine nonlinear systems with multiple faults occurring simultaneously is analyzed.The numerical simulation results are obtained to show the effectiveness of the proposed evaluation scheme of fault diagnosability.

关 键 词：fault diagnosability multiple faults occurring simultaneously uncertain affine nonlinear system 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置]