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Nonlinear System Identification of Folding Fins with Freeplay Using Direct Parameter Estimation
Joint Authors
Ma, Zhi-Sai
Ding, Qian
Wang, Bo
Zhang, Xin
Source
International Journal of Aerospace Engineering
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-11-15
Country of Publication
Egypt
No. of Pages
8
Abstract EN
Folding fins are widely adopted in missiles for the efficient use of space during storage and transportation, while nonlinear behavior of freeplay is inevitable due to the factors such as mismachining tolerance, assembly error, and abrasion.
The problem of nonlinear system identification of folding fins with freeplay is considered in this paper.
A direct parameter estimation method which can identify the nonlinear system with freeplay under base excitation is proposed and subsequently applied to establish the nonlinear dynamic model of a folding fin.
The best set of coefficients is selected by using the significance test, allowing the proposed method to detect and locate the most relevant nonlinearities of the practical structure.
Experimental results demonstrate that the proposed method is able to decouple the linear and nonlinear dynamics of a nonlinear structure and estimate natural frequencies of the derived linear system along with nonlinear internal forces in one computational step, even if no a priori knowledge of the type of nonlinearities is given.
American Psychological Association (APA)
Ma, Zhi-Sai& Wang, Bo& Zhang, Xin& Ding, Qian. 2019. Nonlinear System Identification of Folding Fins with Freeplay Using Direct Parameter Estimation. International Journal of Aerospace Engineering،Vol. 2019, no. 2019, pp.1-8.
https://search.emarefa.net/detail/BIM-1156419
Modern Language Association (MLA)
Ma, Zhi-Sai…[et al.]. Nonlinear System Identification of Folding Fins with Freeplay Using Direct Parameter Estimation. International Journal of Aerospace Engineering No. 2019 (2019), pp.1-8.
https://search.emarefa.net/detail/BIM-1156419
American Medical Association (AMA)
Ma, Zhi-Sai& Wang, Bo& Zhang, Xin& Ding, Qian. Nonlinear System Identification of Folding Fins with Freeplay Using Direct Parameter Estimation. International Journal of Aerospace Engineering. 2019. Vol. 2019, no. 2019, pp.1-8.
https://search.emarefa.net/detail/BIM-1156419
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1156419