FAULT DETECTION OF A NONLINEAR SWITCHING SYSTEM USING FINITE MEMORY OBSERVERS

摘要

This paper is devoted to the design of a fault detection strategy for nonlinear switching discrete-time systems using Finite Memory Observers (FMO). Using both the past input/output measurements and the model equations, state estimation is expressed as a minimization problem of a cost function. Gauss-Newton's optimization method is investigated in a diagnosis purpose. Performances of FMO observers for residual generation on hybrid systems will be illustrated through numerical simulations on a benchmark two tank system.