Theories and its Developments of Vision-based Displacement-sensitive Fringe Pattern for Multi-dimensional Dynamic Measurement

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Theories and its Developments of Vision-based Displacement-sensitive Fringe Pattern for Multi-dimensional Dynamic Measurement
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                        Zhong Jianfeng1Zhong Jianfeng
School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, China
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Li Siyu1Li Siyu
School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, China
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Wu Shengyuan1Wu Shengyuan
School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, China
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Chen Xinwei2Chen Xinwei
Fujian Provincial Key Laboratory of Information Processing and Intelligent Control, Minjiang University, Fuzhou 350121, China
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Luo MantingLuo Manting
1. School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, China; 3. Modern Precision Measurement and Laser Nondestructive Testing Key Laboratories of Universities in Fujian Province, Putian 351100, China
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Zhong Shuncong1Zhong Shuncong
School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, China
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Affiliation:1. School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, China; 2. Fujian Provincial Key Laboratory of Information Processing and Intelligent Control, Minjiang University, Fuzhou 350121, China; 3. Modern Precision Measurement and Laser Nondestructive Testing Key Laboratories of Universities in Fujian Province, Putian 351100, China
Clc Number:TH212
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Abstract:

Aiming at the problem of existing monocular vision measuring technique in synchronously measurement for structural 3D vibration and rotation parameters measurement, a series of novel vision displacement-sensitive fringe pattern (DSFP) based dynamic measurement methods were proposed. Multi-dimensional and multi-parameter synchronous measurement for non-rotating structural 3D displacement, rotating shaft 3D displacement, rotation angle and rotation speed could be realized by using the novel DSFPs as vibration displacement or rotation angular displacement sensors and using a high-speed camera as a detector. The evolution and measurement principle of different DSFPs were well descried. The feasibility and accuracy of the vision DSFP-based measurement methods for the measurement of non-rotating structural 3D displacement, rotating shaft 3D displacement and rotation parameters were verified by experimental results, which provides a series of measurement solution for structural condition monitoring and faults diagnosis.

Key words:displacement-sensitive fringe pattern; high-speed camera; vision measurement; three-dimensional vibration; rotation parameters

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Online: October 18,2024
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