膜反射特性对轴系光学弯扭测量的影响研究

发布时间：2018-03-09 09:06

本文选题：激光多普勒　切入点：扭转振动　出处：《机械设计与制造》2016年09期 　论文类型：期刊论文

【摘要】：针对目前弯扭振动一般采用独立检测的方式,基于激光多普勒效应,提出一种同时测量弯曲振动和扭转振动的方法。通过构建测量原理方案,推导出光路部分的数学模型。同时对影响弯扭振动测量的主要因素进行了分析,详细论述了反光膜回归反射特性对轴系振动的影响。分析了玻璃微珠反光膜和微棱镜反光膜定向反射的原理,并对不同反射性能、不同单元结构反光膜对多普勒信号的影响进行了测试与对比,实验结果表明:选择布珠率高、布珠均匀、反射特性显著的玻璃微珠反光膜能够有效改善因转轴表面纹理结构导致的散斑效应对多普勒频移的影响,提高信号的质量。
[Abstract]:In view of the current commonly used independent bending and torsional vibration detection, based on laser Doppler effect, a method is proposed for simultaneous measurement of bending vibration and torsional vibration. Through the construction scheme of the measurement principle, deduced the mathematical model of optical parts. At the same time, the main factors of influencing the torsional vibration measurement are analyzed, the effect of reflective film reflection characteristics for a detailed description of the shafting vibration was analyzed. The principle of glass bead reflective film and micro prism reflective film directional reflection, and reflection of different performance, different unit structure of reflective film on the impact of Doppler signals were tested and compared, the experimental results indicate that the Bju Bju rate, uniform, glass reflection characteristics significantly beads of reflective film can effectively improve the effect of speckle effect caused by the shaft surface texture on the structure of Doppler frequency shift and improve signal quality.

【作者单位】：西南科技大学制造科学与工程学院;
【基金】：四川省教育厅重点项目(15ZA0116) 国家自然科学基金资助(51375410) 四川省省部共建教育部重点实验室资助课题(13zxzk06)
【分类号】：TH113.1;TN249

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