北京航空航天大学学报 ›› 2021, Vol. 47 ›› Issue (2): 207-212.doi: 10.13700/j.bh.1001-5965.2020.0211

• 论文 • 上一篇    下一篇

基于机器视觉的轻型梁三维振动测量方法

彭聪, 缪卫东, 曾聪   

  1. 南京航空航天大学 自动化学院, 南京 211106
  • 收稿日期:2020-05-25 发布日期:2021-03-08
  • 通讯作者: 彭聪 E-mail:pengcong.2006@163.com
  • 作者简介:彭聪,女,博士,教授,硕士生导师。主要研究方向:振动测量及振动控制、视觉测量、视觉重建;缪卫东,男,硕士研究生。主要研究方向:视觉测量技术;曾聪,男,硕士研究生。主要研究方向:视觉测量技术。
  • 基金资助:
    国家自然科学基金(61703203);江苏省自然科学基金(BK20170812);中央高校基本科研业务费专项资金(56XAA19040)

Three-dimensional vibration measurement method for lightweight beam based on machine vision

PENG Cong, MIAO Weidong, ZENG Cong   

  1. College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
  • Received:2020-05-25 Published:2021-03-08

摘要: 振动测量是状态检测和故障诊断的方法之一,针对传统接触式测量方法中存在负载效应等问题,对基于机器视觉的三维振动测量方法进行了研究。首先,基于视频相位的二维振动测量方法,提取出相机所采集图像中被测目标的二维振动数据。然后,在二维振动测量方法的基础上,结合双目立体视觉,设计了一种基于机器视觉的三维振动测量方法。最后,进行了悬臂梁的振动测量实验。结果表明:所提方法可以实现无接触和无标记的振动测量,并能准确测量出三维的振动信息。

关键词: 振动测量, 三维振动信号, 机器视觉, 图像处理, 轻质结构

Abstract: Vibration measurement is one of the methods of state detection and fault diagnosis. In view of the loading effect in the current contact vibration measurement method and other problems, this paper studies the three-dimensional vibration measurement method based on machine vision. First, based on the two-dimensional vibration measurement method of video phase, the two-dimensional vibration data of the measured object in the image collected by the camera is extracted. Then, on the basis of two-dimensional vibration measurement method, combined with binocular stereo vision, a three-dimensional vibration measurement method based on machine vision is designed. Finally, the vibration measurement experiment of cantilever beam is performed. The experimental results show that the proposed method can realize non-contact and label free vibration measurement, and can accurately measure the three-dimensional vibration information.

Key words: vibration measurement, three-dimensional vibration signal, machine vision, image processing, lightweight structure

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