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논문 기본 정보

자료유형
학술저널
저자정보
Ping-Ping Yuan (Jiangsu University of Science and Technology) Dong-Yan Xue (Jiangsu University of Science and Technology) Zhou-Jie Zhao (Jiangsu University of Science and Technology) Wei-Xin Ren (Shenzhen University)
저널정보
국제구조공학회 Smart Structures and Systems, An International Journal Smart Structures and Systems, An International Journal 제33권 제6호
발행연도
2024.6
수록면
385 - 398 (14page)

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초록· 키워드

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To improve the accuracy of time-frequency analysis (TFA) and instantaneous frequency (IF) extraction of structural dynamic response signals, this paper improves the spline-kernelled chirplet transform, and a new form of modified spline-kernelled chirplet transform (MSCT) based on revised Gaussian window function and energy concentration principle is put forward. The effectiveness of the proposed method is verified by numerical examples of single-component signal, multi-component signal, single-degree-of-freedom Duffing nonlinear system and two-layer shear frame structure model. Then, a time-varying cable test is designed to collect the acceleration response signals under linear changing tension, and the IF extraction of these signals is performed by using MSCT, which further verifies the effectiveness and accuracy of this method. Through numerical simulation and experimental verification, it is proved that the proposed method can effectively extract the IF of nonlinear structure and time-varying structure.

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