Fault Diagnosis and Reconfigurable Control of Singularly Perturbed Systems using GIMC Structure

Abstract

This paper proposes the extension of generalized internal model control (GIMC) based diagnosis and fault tolerant control to singularly perturbed system. This control method consists of two parts: a controller which guaranties nominal performance and works in the fault free case and a robustness controller to compensate the fault when a sensor failure is detected. This work describes the way to design such controllers for singularly perturbed systems so that the performance with the nominal controller may be guaranteed in the case of sensor failure.

Fault estimation and optimization for uncertain disturbed singularly perturbed systems with time-delay

“…In singularly perturbed systems, faults may also cross time scales due to the existence of small perturbed parameter, which increases the difficulty of fault diagnosis. At the beginning of the study, it can only detect whether the fault occurs or not without obtaining the information about the shape and magnititude [17,18], and then the conservative fault diagnosis can be realized along with the further research [19,20]. Recently, with the gradual improvement of the theoretical system, the research on fault estimation has yielded fruitful results [5], [9]- [27].…”