Structural system identification with extended Kalman filter and orthogonal decomposition of excitation
type: Item
instance of: scholarly article
title: Structural system identification with extended Kalman filter and orthogonal decomposition of excitation
zbMATH Open document ID: 1407.93403
DOI: 10.1155/2014/987694
author: Xianqiang Yang
published in: Mathematical Problems in Engineering
publication date: 2019-02-08T00:00:00Z
review text: Summary: Both the structural parameter and external excitation have coupling influence on structural response. A new system identification method in time domain is proposed to simultaneously evaluate structural parameter and external excitation. The method can be used for linear and hysteresis nonlinear structural condition assessment based on incomplete structural responses. In this method, the structural excitation is decomposed by orthogonal approximation. With this approximation, the strongly time-variant excitation identification is transformed to gentle time-variant, even constant parameters identification. Then the extended Kalman filter is applied to simultaneously identify state vector including the structural parameters and excitation orthogonal parameters in state space based on incomplete measurements. The proposed method is validated numerically with the simulation of three-story linear and nonlinear structures subject to external force. The external force on the top floor and the structural parameters are simultaneously identified with the proposed system identification method. Results from both simulations indicate that the proposed method is capable of identifing the dynamic load and structural parameters fairly accurately with contaminated incomplete measurement for both of the linear and nonlinear structural systems.
Mathematics Subject Classification ID: 93E12
Mathematics Subject Classification ID: 93E11
zbMATH DE Number: 7017794
Wikidata QID: Q59071464
MaRDI profile type: Publication
full work available at URL: https://doi.org/10.1155/2014/987694
OpenAlex ID: W1991544796
cites work: Simultaneous identification of structural parameters and input time history from output-only measurements
cites work: On-line identification of non-linear hysteretic structures using an adaptive tracking technique
cites work: Equivalent Linearization for Hysteretic Systems Under Random Excitation
description: scientific article; zbMATH DE number 7017794