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Study on vibration detection System of Wind-driven Generator based on Virtual Instrument

International Journal of Plant Engineering and Management 2021年第1期26卷 57-64页

作者： WEI Xieben LU Xujin LI Tongbin Shantou Polytechnic Shantou 515000GuangdongChina Jieyang Polytechnic Jieyang 522000GuangdongChina

This study analyzes the structural characteristics of wind-driven generator,concludes its comment malfunctions and proposes effective methods by general fault analysis methods,so as to design online detection and fault diagnosis system of wind-driven generator in virtual *** work will realize real-time detection,help engineers to proceed remote fault diagnosis,reduce maintenance time and increase production *** study is meaningful and practical to develop a fault diagnosis system for wind-driven generators,which shows professionalization of fault diagnosis system.

关键词： wind-driven generator virtual instrument vibration detection fault diagnosis system

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Accurate vibration detection of a Rough Surface

Accurate Vibration Detection of a Rough Surface

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2007亚洲光电子会议纳米光子学/纳米结构/纳米计量学分会场

作者： Hualin Zeng,Yan Zhou,Songtao Fan,Jun He Institute of Semiconductors,Chinese Academy of.Sciences

Based on the semiconductor laser whose spectral line with width is compressed to be less than 1.2Mhz,a system was designed to measure and improve the amplitude and frequency of the real-time microvibration with sinusoidal ***-time microvibration measurement was executed without alignment problem in the interferometry;and low-frequency disturbance of environment could be *** were also given to consummate the *** system also has resistance against the low frequency disturbance of the environment.

关键词： measurement of microvibration nanometrology interferometry vibration detection

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Development of a software platform for bridge modal and damage identification based on ambient excitation

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High-Speed Railway 2023年第3期1卷 162-170页

作者： Jiahuan Li Li Zhu Wenyu Ji Sunfeng You School of Civil Engineering Bejing Jiaotong UniversityBeijing 100044China

Modal and damage identification based on ambient excitation can greatly improve the efficiency of high-speed railway bridge vibration *** paper first describes the basic principles of stochastic subspace identification,peak-picking,and frequency domain decomposition method in modal analysis based on ambient excitation,and the effectiveness of these three methods is verified through finite element calculation and numerical simulation,Then the damage element is added to the finite element model to simulate the crack,and the curvature mode difference and the curvature mode area difference square ratio are calculated by using the stochastic subspace identification results to verify their ability of damage identification and ***,the above modal and damage identification techniques are integrated to develop a bridge modal and damage identification software *** final results show that all three modal identification methods can accurately identify the vibration frequency and mode shape,both damage identification methods can accurately identify and locate the damage,and the developed software platform is simple and efficient.

关键词： vibration detection Software development Modal identification Damage identification Numerical verification

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