Identification of Nonlinear Systems from Steady-state Frequency Response

✍ Scribed by Y.C. Wu; P.L. Lin; S.C. Lee

• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 815 KB
• Volume: 316
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/0016-0032(83)90042-x

✦ Synopsis

Methods are proposed for identifying the NL, LN and LNL models. The nonlinearity is assumed to be independent offrequency. For each model, the linear part isjrst identified based on extracting the amplitude andJor phase responses due to linear systems from the overall response. After the linear system has been identified, the nonlinearity is identijied graphically. An advantage of the proposed methods is that multiple-valued nonlinearity can also be considered. An application of identifying a unity feedback nonlinear system is also discussed.