Measurement of dynamic shaft power based on industrial photography

Xin-yun ZI; Ren-jun QIAN; Shu-fan ZHAO; Shuai GENG; Wei-feng ZHANG

doi:10.3788/OPE.20162411.2672

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Measurement of dynamic shaft power based on industrial photography

Modern Apploed Optics | 更新时间：2020-07-07

- Measurement of dynamic shaft power based on industrial photography
- Editorial Office of Optics and Precision Engineeri Vol. 24, Issue 11, Pages: 2672-2682(2016)
- 作者机构：
  
  1.军事交通学院工程实验中心, 天津 300161
  2.海军航空工程学院飞行器工程系, 山东烟台 264000
  3.中国人民解放军94303部队, 山东潍坊 261000
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20162411.2672
  CLC： TH133.3;TB971
- Received：25 April 2016，
  
  Accepted：02 July 2016，
  
  Published：25 November 2016
- 稿件说明：
移动端阅览
Xin-yun ZI, Ren-jun QIAN, Shu-fan ZHAO, et al. Measurement of dynamic shaft power based on industrial photography[J]. Editorial office of optics and precision engineeri, 2016, 24(11): 2672-2682.
DOI：

Xin-yun ZI, Ren-jun QIAN, Shu-fan ZHAO, et al. Measurement of dynamic shaft power based on industrial photography[J]. Editorial office of optics and precision engineeri, 2016, 24(11): 2672-2682. DOI： 10.3788/OPE.20162411.2672.

摘要

基于工业摄像技术提出一种非接触测量传动轴动态轴功率的方法。首先设计了轴功率测量系统，提出了测量轴转速和轴转矩的方法。通过数字散斑的相关搜索和亚像素计算等手段，测得轴转速和转矩值，最终计算得出轴功率。为验证本文方法的测量精度，搭建了车载试验系统，并在底盘测功机上对其进行了实际测量试验。试验结果表明：提出的轴功率测量方法得到的结果与底盘测功机测量结果变化趋势一致，其相对误差平均值为9.37%。其中轴转速的测量范围可以覆盖整个过程，测量值波动较小，与底盘测功机测量结果基本一致，其相对误差平均值为0.73%，抗噪能力强；轴转矩的测量范围可覆盖部分高转矩，测量值波动较大，两者测量结果趋势一致，其相对误差平均值为15.15%，抗噪能力较弱。本文方法克服了一些传统测量方法的不足，为解决轴功率动态测量提供了一种新思路。

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

Keywords

references

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