Adaptive Observer Design for Actuator and Sensor Faults Estimations: VTOL Air Craft System Application

The work develloped in this paper treat the problems of simultaneous actuator and sensor fault estimation for an Air Craft System. The original system can often be modeled as polytopic linear parameter varying (LPV) plants for which some estimation techniques of fault and state still hard to solve. Here, we propose a new approach to design an adaptive observer based on quadratic Lyapunov approach. The solution is described as an optimization problem formulated in terms of Linear Matrix Inequalities (LMI) techniques. A simulation design shows that the new algorithm yields to reliable state estimation and simultaneous fault detection of the LPV model of Air Craft System which illustrate the validation of the proposed method.