作者: Jiong Tang , Rajamani Doraiswami , Chris P. Diduch
DOI: 10.1109/ICCA.2009.5410381
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摘要: It is shown that the output of a certain class nonlinear dynamic systems can match arbitrarily close linear system if spectral content probing input same as system. The with cascade or feedback combination static elements and considered. If nonlinearity odd symmetric, signal periodic, persistently exciting only harmonics then it an between may be achieved. proposed method differs from traditional approximation model in captures behavior over larger region operating point. scheme verified on simulated systems, tested physical system, finds application identification for control design, fault diagnosis, analysis