Admissible Model Matching Fault Tolerant Control based on LPV Fault Representation

Abstract: In this paper, an approach to design an Admissible Model Matching (AMM) Fault Tolerant Control (FTC) based on Linear Parameter Varying (LPV) fault representation is proposed. The main contribution of this approach is to consider the fault as a scheduling variable that allows the controller reconfiguration online. The fault is expressed as a change in the system dynamics (in particular, in the model parameters). The suggested strategy is an active technique that requires the fault to be detected, isolated and estimated by the FDI scheme. In case the fault estimation is not available, a passive strategy based on a single AMM FTC controller could be designed. The FTC controller is designed using LMI regional pole placement. The effectiveness and performances of the method have been illustrated in simulation considering a thermal hydraulic system