Robust Fault Diagnosis of Nonlinear System Based on Analytical Models:a Survey

Studies on robust fault diagnosis of nonlinear systems based on analytical models are of great significance. This paper mainly concerns two kinds of approaches:nonlinear unknown input observer scheme and the method based on adaptive learning, and summarizes some other approaches. In addition, we also discuss some applications of robust fault diagnosis of nonlinear systems, and point out some key issues and the future research direction.