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A Novel Simultaneous Fault Detection and Control Approach Based on Dynamic Observer

Abstract In this paper, the problem of simultaneous fault detection and control (SFDC) for linear time invariant (LTI) systems is considered. A mixed H 2 / H ∞ formulation of the SFDC problem using dynamic observer is used. In essence, a single unit called detector/controller is designed where the detector is a dynamic observer and the controller is a state feedback controller based on the dynamic observer. Hence, the detector/controller unit produces two signals, i.e. the detection and control signals. Unlike previous approaches for SFDC problem, the observer parameters and controller gain are all obtained via Linear Matrix Inequality (LMI) feasibility conditions. Simulation results illustrate the effectiveness of the proposed design technique.