Szukana fraza: [Abstract = "A simple semi\-recursive routine for nonlinearity recovery in Hammerstein systems is proposed. The identification scheme is based on the Haar wavelet kernel and possesses a simple and compact form. The convergence of the algorithm is established and the asymptotic rate of convergence \(independent of the input density smoothness\) is shown for piecewise\-Lipschitz nonlinearities. The numerical stability of the algorithm is verified. Simulation experiments for a small and moderate number of input\-output data are presented and discussed to illustrate the applicability of the routine."]