Structure identification criteria of nonlinear systems via bispectrum

الملخص EN

Models, which are composed of cascades of linear dynamie and static nonlinear blocks, are considered.

These models, known in the literature as generalized Wiener-Hammerstein models, are extensively used to represent nonlinear dynamic systems.

The bispeetrum characteristics of the output sequenee are investigated, and useful results are obtained which facilitate the structure identification of the underlying nonlinear system.

Numerical examples are simulated by using noisy output measurements to illustrate the results.