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Parameter Identification Method Based on Model Degradation
Science Discovery
Volume 6, Issue 6, December 2018, Pages: 489-494
Received: Dec. 10, 2018; Published: Dec. 12, 2018
Views 693      Downloads 33
Author
Xiaoxia Tian, Computer and Information Engineering College, Hanshan Normal University, Chaozhou, China
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Abstract
Vortex-induced resonance is a complex coupling phenomenon. Vortex-induced vertical force (VIVF) model describes the characteristics of the vortex-induced force in resonance. Improper parameters can distort the model, so accurately identifying the parameters of the model is a current research hotspot. In this paper, a parameter identification method based on model degradation is proposed. A constant term is used to replace the harmonic force term in the model. The degenerated model is a linear combination of the nonlinear basis functions. Therefore, the linear fitting method is used to identify the model parameters. Based on the fit of VIVF, the performance of identification algorithm is evaluated. The results of Wilcoxon’s and Friedman’s nonparametric tests show that the identification algorithm is the best.
Keywords
Long-Span Bridge, Vortex Induced Resonance, Parameter Identification, Nonparametric Test
To cite this article
Xiaoxia Tian, Parameter Identification Method Based on Model Degradation, Science Discovery. Vol. 6, No. 6, 2018, pp. 489-494. doi: 10.11648/j.sd.20180606.28
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