| 基于双色光干涉的面接触润滑油膜在线测量 |
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| 引用本文： | 白清华,郭峰,姜培刚,黄柏林.基于双色光干涉的面接触润滑油膜在线测量[J].摩擦学学报,2017(3):283-289. |
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| 作者姓名： | 白清华 郭峰 姜培刚 黄柏林 |
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| 作者单位： | 1. 青岛理工大学计算机工程学院,山东青岛266520;青岛理工大学机械工程学院,山东青岛266520;2. 青岛理工大学机械工程学院,山东青岛,266520;3. 香港城市大学机械与生物医学工程系,香港九龙,999077 |
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| 基金项目： | 国家自然科学基金项目（51275252）和国家教育部博士点基金（20133721110002）项目资助 |
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| 摘 要： | 根据面接触润滑油膜红绿双色光干涉强度调制信号,构造了基于光流和动态时间弯曲技术的追踪算法,对一维调制光强曲线上与膜厚具有对应关系的特定目标区域进行实时追踪,从而实现了在线实时膜厚测量.通过与稳态离线测量结果对比,验证了该在线测量系统的准确性和可靠性.利用该系统对三角波形式变速过程中流体动压润滑瞬时膜厚进行了测量,揭示了膜厚滞后于速度变化的规律.
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| 关 键 词： | 光干涉 油膜厚度 面接触 在线测量 |
| 收稿时间： | 2016/12/27 0:00:00 |
| 修稿时间： | 2017/2/20 0:00:00 |
On-Line Measurement of Lubricant Film Thickness in a Flat-on-Flat Contact by Dichromatic Interferometry |
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| BAI Qinghua,GUO Feng,JIANG Peigang,WONG Pat Lam.On-Line Measurement of Lubricant Film Thickness in a Flat-on-Flat Contact by Dichromatic Interferometry[J].Tribology,2017(3):283-289. |
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| Authors: | BAI Qinghua GUO Feng JIANG Peigang WONG Pat Lam |
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| Institution: | 1. School of Computer Engineering, Qingdao University of Technology, Shandong Qingdao 266520, China;2. School of Mechanical Engineering, Qingdao University of Technology, Shandong Qingdao 266520, China,School of Mechanical Engineering, Qingdao University of Technology, Shandong Qingdao 266520, China,School of Mechanical Engineering, Qingdao University of Technology, Shandong Qingdao 266520, China and Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Hong Kong 999077, China |
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| Abstract: | In modulated intensity signals generated by dichromatic interferograms from lubricating film in the flat-on-flat contact, some characteristic target fringes can be found which correspond to constant film thickness. Based on optical flow calculation and dynamic time warping (DTW) technique, an algorithm was presented for tracking those target fringes in the 1-D modulated intensity signals, and then the on-line film thickness measurement was achieved. Under the condition of constant speed, this approach was validated by data comparison with previous off-line measurement system. In addition, with the present approach, transient film thickness under triangular wave speeds was measured, and some lubrication behaviours that the change of film thickness lagging behind the speed were revealed. |
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| Keywords: | optical interference lubricant film thickness flat-on-flat contact on-line measurement |
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