“…For nonlinear systems, the design of Fault Tolerant controller is far more complicated. Nonlinear systems based on multiple linear models, represents an attractive solution to deal with the control of nonlinear systems (Leith and Leithead, 2000), (Banerjee et al, 1995) or FDI methods as in the chapter nine of (Chen and Patton, 1999) where nonlinear dynamic systems are described by a number of locally linearized models based on the idea of Tagaki-Sugeno fuzzy models or as interpolated multiple linear models (Murray-Smith and Johansen, 1997). Various recent FDI/FTC studies, based on a multiple model method have been developed in order to detect, isolate and estimated an accurate state of a system in presence of faults/failures around an operating point (Maybeck, 1999), (Zhang and Jiang, 2001).…”