一种运载火箭时变结构模态参数辨识的确定性演化方法

Translated title of the contribution: A Time-Varying Structure Modal Parameter Estimation Method in Deterministic Evolution for Launch Vehicle

Lei Yu, Li Liu*, Ying Cui, Zhen Jiang Yue, Jie Kang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Focusing on the problems of time-varying structure modal parameter estimation for a launch vehicle, a novel time-varying structure modal parameter estimation method in deterministic evolution based on the time-varying auto- regressive moving average (TARMA) model is proposed. The method takes the advantage of a wavelet function in detail representation and uses it as the basis function of time-varying parameters in the TARMA model, and the wavelet basis based FS-TARMA model is finally established. In order to estimate the time-varying parameters in a linear manner, the two-step least square estimation method is proposed. The proposed method is verified by the core stage of Ariane V time-varying finite element model with its counterpart Fourier basis FS-TARMA method, and the comparative identification results demonstrate that the superior achievable accuracy and enhanced tracking capabilities of the Mexican wavelet basis FS-TARMA method.

Translated title of the contributionA Time-Varying Structure Modal Parameter Estimation Method in Deterministic Evolution for Launch Vehicle
Original languageChinese (Traditional)
Pages (from-to)379-388
Number of pages10
JournalYuhang Xuebao/Journal of Astronautics
Volume41
Issue number4
DOIs
Publication statusPublished - 30 Apr 2020

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