1999 Volume 12 Issue 2 Pages 82-89
In this paper, we propose an identification method of discrete-type nonlinear systems with additive measurement noises using Chebyshev polynomials. A nonlinear function is assumed to be approximately described by a linear combination of some Chebyshev polynomials. Each coefficient of the polynomials is easily evaluated by the least squares method. An error bound of the identification is also estimated here. Moreover, the optimal order of the Chebyshev polynomials is determined by using the Akaike's information criterion. The paper includes simulation experiments to demonstrate the effectiveness of the proposed method.
