Real-Time Tracking of Time-Varying Cable Frequency Based on a Time-Domain Signal Processing Method

被引：1
|
作者：
Shi, Zhongqi [1 ,2 ,3 ]
Zhong, Rumian [1 ,2 ,3 ]
Jin, Nan [1 ,2 ,3 ]
机构：
[1] Minist Emergency Management, Key Lab Urban Safety Risk Monitoring & Early Warni, Shenzhen 518055, Peoples R China
[2] Shenzhen Technol Inst Urban Publ Safety, Shenzhen 518000, Peoples R China
[3] Natl Sci & Technol Inst Urban Safety Dev, Shenzhen 518000, Peoples R China
来源：
SUSTAINABILITY | 2023年 / 15卷 / 02期
基金：
中国国家自然科学基金;
关键词：
time-domain signal processing; conjugate-pair decomposition; cable frequency; intrinsic mode functions; MODE DECOMPOSITION; IDENTIFICATION; TRANSFORM;
D O I：
10.3390/su15021700
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this paper, a time-domain signal processing method is proposed to extract the real-time time-varying cable frequency. The proposed conjugate-pair decomposition (CPD) method uses empirical mode decomposition (EMD) to obtain intrinsic mode functions (IMFs), and then the instantaneous frequency can be extracted by post-processing the conjugate-pair of IMFs. Several numerical simulations and a composite cable-stayed bridge experiment are used to validate the accuracy and capability of the proposed method for tracking time-varying cable frequency. Moreover, the proposed method may be further used to assess cable fatigue damage.
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页数：12
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