噪声与振动控制2025，Vol.45Issue(2)：32-38,51,8.DOI:10.3969/j.issn.1006-1355.2025.02.006
基于自适应改进多重同步挤压变换的结构响应重构
Structural Response Reconstruction Based on Adaptive Improved Multi-synchrosqueezing Transform
摘要
Abstract
Aiming at the problem that the structural response reconstruction method based on empirical mode decompo-sition needs to set more bandpass filter parameters and has low robustness to noise,a structural response reconstruction meth-od based on adaptive improved multi-synchrosqueezing transform was proposed.Firstly,the window length and iterations number of the improved multi-synchrosqueezing transform were selected adaptively according to Rayleigh entropy,and the optimal window length and the number of iteration were used to perform the time-frequency analysis.Then,the Crazy Climber algorithm was introduced to improve the accuracy of the ridge extraction,and the vibration response component sig-nals was reconstructed through the ridges.Finally,the response components at the response-unknown points were calculated using the modal transform matrix,and the structural response was reconstructed by means of the modal superposition meth-od.The effectiveness of the method was verified by numerical simulation of cantilever beams and experimental measure-ment of simply supported beams.The results show that the reconstructed response time-history curves of the proposed meth-od are in good agreement with the real response time-history curves.Compared with the traditional response reconstruction method based on empirical mode decomposition,the proposed method has strong noise robustness without needing the pre-set parameters.关键词
振动与波/自适应改进多重同步挤压变换/Crazy Climber算法/模态转换矩阵/模态叠加法/响应重构Key words
vibration and wave/adaptive improved multi-synchrosqueezing transform/Crazy Climber algorithm/mod-al transformation matrix/modal superposition method/response reconstruction分类
机械制造引用本文复制引用
窦文,殷红,彭珍瑞..基于自适应改进多重同步挤压变换的结构响应重构[J].噪声与振动控制,2025,45(2):32-38,51,8.基金项目
国家自然科学基金资助项目(62161018) （62161018）
甘肃省优秀研究生"创新之星"资助项目(2023CXZX-568) （2023CXZX-568）
