This paper presents a new FDI scheme based on dynamic fuzzy model(DFM) for the unknown nonlinear
system, which can detect and isolate process faults continuously over all ranges of operating condition. The
dynamic behavior of a nonlinear process is re...
This paper presents a new FDI scheme based on dynamic fuzzy model(DFM) for the unknown nonlinear
system, which can detect and isolate process faults continuously over all ranges of operating condition. The
dynamic behavior of a nonlinear process is represented by a set of local linear models. The parameters of the
DFM are identified by an on-line methods. The residual vector of the FDI system is consisted of the parameter
deviations from nominal model and the set of grade of membership values indicating the operating condition
of the nonlinear process. The detection and isolation of faults are performed via a neural network classifier
that are learned the relationship between the residual vector and fault type. We apply the proposed FDI scheme
to the FDI system design for a two-tank system and show the usefulness of the proposed scheme.