光学精密工程2016，Vol.24Issue(11)：2672-2682,11.DOI:10.3788/OPE.20162411.2672
基于工业摄像技术的动态轴功率测量
Measurement of dynamic shaft power based on industrial photography
摘要
Abstract
On the basis of the industrial photography ,a non-contact measurement method for dynamic shaft power of a transmission shaft was proposed .Firstly ,a measurement system of shaft power was designed ,and the measurement method of shaft rotational speed and shaft torque was put forward . Then the shaft rotational speed and torque were measured by digital image correlation method and sub pixel computation . Finally , the shaft power was figured out . To validate the accuracy of this measurement method ,a test system mounted on a vehicle was set up ,and the actual test was carried out on a chassis dynamometer .The test results show that the measurement results by proposed shaft power measurement method and the chassis dynamometer have the same trend ,and the average of relative error is 9 .37% .The measuring range of the shaft rotational speed covers the whole process , and the fluctuation of measurement results is smaller . The measurement results are basically consistent with that of the chassis dynamometer ,and the average of relative error is 0 .73% ,which verifies its strong anti-noise ability .Moreover ,the measuring range of the shaft torque covers the part of the high torque ,and the measurement results is in a larger fluctuation .The measurement results have the same trend with that of the chassis dynamometer , and the average of relative error is 15.15% ,the anti-noise ability is weaker .The method proposed in this paper overcomes shortcomings of some traditional measurement methods ,and provides a new way to solve the measurement problem of dynamic shaft power .关键词
数字图像相关/轴功率测量/转速测量/转矩测量/梯度法/工业摄像Key words
digital image correlation/shaft power measurement/rotational speed measurement/torque measurement/gradient method/industrial photography分类
机械制造引用本文复制引用
资新运,钱仁军,赵姝帆,耿帅,张卫锋..基于工业摄像技术的动态轴功率测量[J].光学精密工程,2016,24(11):2672-2682,11.基金项目
国家863高技术研究发展计划资助项目（No ．2013AA065303）；国家自然科学基金重点资助项目（No ．91120306）；天津市自然科学基金资助项目 （）
