Finite memory state observer design for polytopic systems. Application to actuator fault diagnosis

This paper addresses the Finite Memory Observer (FMO) design applied to polytopic models. After a brief introduction on FMO for linear systems, the nonlinear models represented in a Takagi-Sugeno (T-S) or Poly-topic form are then considered. The considered observer design will be applied to investigate the fault diagnosis for nonlinear discrete-time systems subject to unknown input where joint system states and unknown inputs estimation is proposed.