A constructive approach for nonlinear system identification using multilayer perceptrons

Abstract

This paper combines a conventional method of multivariable system identification with a dynamic multi-layer perceptron (MLP) to achieve a constructive method of nonlinear system identification. The class of nonlinear systems is assumed to operate nominally around an equilibrium point in the neighborhood of which a linearized model exists to represent the system, although normal operation is not limited to the linear region. The result is an accurate discrete-time nonliner model, extended from a MIMO linear model, which captures the nonlinear behavior of the system.