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Article type: Research Article
Authors: Liang, Yanchun | Zhen, Qiang | Wang, Zaishen
Affiliations: Mathematics Department, Jilin University, Changchun 130023, People's Republic of China | Open Laboratory of CAD/CAM, Technology for Advanced Manufacturing, Academia Sinica, Shenyang 110003, People's Republic of China
Abstract: An on-line least squares algorithm has previously been successfully applied to linear vibration systems in order to identify time varying parameters. In this article the limitations of the approach and the factors affecting the identification are further examined. The existence of the nonlinear term is determined by means of the time varying characteristics of the estimated linear parameters using the linear model and the data from a time invariant nonlinear system. The identification of the time varying linear parameters is also examined in accordance with the linear model by using the data with nonlinear elements.
DOI: 10.3233/SAV-1997-4106
Journal: Shock and Vibration, vol. 4, no. 1, pp. 69-76, 1997
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