Residual generation with enhanced robustness against model uncertainties

Abstract

In this chapter, we shall deal with robustness problems met by generating residual signals in uncertain systems. As sketched in Fig.8.1, model uncertainties can be caused by changes in process and in sensor, actuator parameters. These changes will affect the residual signal and complicate the FDI process. The major objective of addressing the robustness issues is to enhance the robustness of the residual generator against model uncertainties and disturbances without significant loss of the faults sensitivity.