Identification of nonlinear vibrating structures by polynomial expansion in the z-domain
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- 作者：Alessandro Fasana ; alessandro.fasana@polito.it" class="auth_mail" title="E-mail the corresponding author ; Luigi Garibaldi ; Stefano Marchesiello
- 关键词：Linear and nonlinear identification ; Frequency domain ; Z-transform ; MDOF system
- 刊名：Mechanical Systems and Signal Processing
- 出版年：2017
- 出版时间：1 February 2017
- 年：2017
- 卷：84
- 期：part_PB
- 页码：21-33
- 全文大小：799 K
文摘
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Frequency domain method for the identification of nonlinear vibrating structures.
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z-domain formulation of the FRF of the linear underlying system.
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Least squares approach to derive a compact and well conditioned problem.
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Robustness and numerical performances of the method demonstrated on simulated data.
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Examples with 1 and 2 degree of freedom systems with typical nonlinearities.