离面振动光流分析方法研究  

Analysis of out-of-plane vibration using optical flow

作　　者：尹爱军[1,2] 张泉[2] 戴宗贤 薛磊[2] 

机构地区：[1]重庆大学煤矿灾害动力学与控制国家重点实验室,重庆400044 [2]重庆大学机械传动国家重点实验室,重庆400044 [3]重庆市计量质量检测研究院第一分院,重庆402260

出　　处：《振动与冲击》2016年第10期18-23,共6页Journal of Vibration and Shock

基　　金：中央高校基本科研业务费专项资金资助项目(CDJZR13115501);重庆大学煤矿灾害动力学与控制国家重点实验室开放课题(2011DA105287-FW201505)

摘　　要：视觉振动检测方法因大范围、非接触等特点,已得到广泛的研究和应用。研究了结构离面振动视觉检测的基本原理,建立了检测模型。根据光流法运动估计的基本原理及离面振动视觉检测模型,研究了离面振动光流分析方法,提出了两种离面振动的光流检测模型。最后,对悬臂梁进行了视觉振动检测实验,并与有限元仿真进行了对比,结果表明该方法无需图像的特征提取,能够有效地识别结构的振动参数。Visual vibration measurement has been extensively researched and applied due to its large range and non-contact characteristics.The principle of vibration detection based on the out-of-plane vision under conventional imaging condition was investigated.Models of vibration detection based on the out-of-plane vision were developed. According to these models and the principle of optical flow motion estimation,vibration measurement methods based on the out-of-plane vision using optical flow were discussed.Two basic models of vibration detection based on the out-of-plane vision using optical flow were proposed.The results of visual vibration detection experiments on a cantilever beam were rigorously compared with those of a finite element simulation to verify the efficacy of the proposed methods.It turns out that the proposed methods can effectively identify the vibration parameters of a structure without its image feature extraction.

关 键 词：光流 离面视觉 振动分析 

分 类 号：TH113[机械工程—机械设计及理论]