Two stages nonlinear systems identification

Abstract: The problem of identifying nonlinear systems is proposed in the presence of hard nonlinearity. The nonlinear systems considered in this paper is structured by Hammerstein systems. The identification is studied in presence of possibly infinite-order linear dynamics and static nonlinearity. Hammerstein models consist of a series connection including a nonlinear element and a linear subsystem. The Identification problem is addressed in the presence of hard nonlinearity.