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Robotics 2016, 5(2), 9;

Vibration Measurement in High Precision for Flexible Structure Based on Microscopic Vision

Research Center of Precision Sensing and Control, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China
Research Center of Laser Fusion, Chinese Academy of Engineering Physics, Mianyang 621900, China
Author to whom correspondence should be addressed.
Academic Editor: Huosheng Hu
Received: 13 January 2016 / Revised: 25 February 2016 / Accepted: 28 March 2016 / Published: 30 March 2016
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Vibration measurement for flexible structures is widely used in various kinds of precision engineering fields. However, it is a challenge to measure vibration in special applications, such as cryogenic, dangerous and magnetic interference. In this paper, a high-precision vibration measurement system based on machine vision is designed. The circle center on the target is employed as the image feature. The circle feature is extracted using the improved algorithm based on gradient Hough transform. Then the image Jacobian matrix is used to compute the vibrations in Cartesian space from the image feature changes. Experiments verify the effectiveness of the proposed methods. View Full-Text
Keywords: flexible structure; vibration measurement; machine vision flexible structure; vibration measurement; machine vision

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Tao, X.; Xu, D.; Zhang, Z.; Wang, K.; Qi, X. Vibration Measurement in High Precision for Flexible Structure Based on Microscopic Vision. Robotics 2016, 5, 9.

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