柔性质心测量方法及不确定度评定

王梅宝; 张晓琳; 唐文彦; 王军

doi:10.3788/OPE.20192707.1500

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柔性质心测量方法及不确定度评定

微纳技术与精密机械 | 更新时间：2020-08-13

- 柔性质心测量方法及不确定度评定
- Flexible center of gravity measurement method and uncertainty evaluation
- 光学精密工程 2019年27卷第7期页码：1500-1507
- 作者机构：
  
  哈尔滨工业大学仪器科学与工程学院，黑龙江哈尔滨 150001
- 作者简介：
  
  [ "王梅宝 (1989-)，女，黑龙江密山人，博士研究生，2012年于青岛理工大学获得学士学位，2015年于中国计量大学获得硕士学位，主要从事质量特性测量方面的研究。E-mail:meibao_wang@163.com" ]
  张晓琳 (1976-)，女，吉林人，博士，副教授，2000于浙江大学获得学士学位，2006年、2010于哈尔滨工业大学分别获得硕士及博士学位，主要从事质量特性测量、激光干涉测量等方面的研究。E-mail：zhangxiaolin@hit.edu.cn ZHANG Xiao-lin, E-mail: zhangxiaolin@hit.edu.cn
- 基金信息：
  
  上海航天科技创新项目(SAST2015029)
- DOI：10.3788/OPE.20192707.1500
  中图分类号： TH89
- 收稿日期：2019-01-09，
  
  录用日期：2019-2-20，
  
  纸质出版日期：2019-07-15
- 稿件说明：
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王梅宝, 张晓琳, 唐文彦, 等. 柔性质心测量方法及不确定度评定[J]. 光学精密工程, 2019,27(7):1500-1507.

Mei-bao WANG, Xiao-lin ZHANG, Wen-yan TANG, et al. Flexible center of gravity measurement method and uncertainty evaluation[J]. Optics and precision engineering, 2019, 27(7): 1500-1507.
王梅宝, 张晓琳, 唐文彦, 等. 柔性质心测量方法及不确定度评定[J]. 光学精密工程, 2019,27(7):1500-1507. DOI： 10.3788/OPE.20192707.1500.

Mei-bao WANG, Xiao-lin ZHANG, Wen-yan TANG, et al. Flexible center of gravity measurement method and uncertainty evaluation[J]. Optics and precision engineering, 2019, 27(7): 1500-1507. DOI： 10.3788/OPE.20192707.1500.

摘要

为了实现大尺寸飞行器质心的测量，提出了一种柔性质心测量方法。对该方法的重力作用线测量、坐标转换、质心合成等问题进行了研究并进行了不确定度分析。首先，测量被测件在任意一个状态下质心在测量设备中的投影，建立通过该投影的重力作用线并通过坐标转换将重力作用线转换到被测件坐标系下。然后，将被测件旋转或倾斜任意一个角度，测量该状态下重力作用线并转换到被测件坐标系中，通过求得两条重力作用线的交点获得质心。最后，采用蒙特卡洛仿真分析法对该测量方法进行了不确定度评定。仿真分析表明，该方法的测量误差≤0.3 mm，实验结果表明，质心测量误差≤0.3 mm，可以在被测件与测量设备相对位置关系未知的情况下实现质心的高精度测量。

Abstract

To measure the center of gravity of a large-sized aircraft

a flexible center of gravity measurement method is proposed. A method to obtain the line that passes through the center of gravity

the coordinate transformation

and the means to obtain the center of gravity itself are also proposed. First

the projection of the line that passes through the center of gravity is measured

and a line that passes through this projection point is established and converted into a coordinate system of the body under test. Second

by means of rotating or tilting the body at any angle

the second line using the same method is measured and converted into the coordinate system of the body. The center of gravity is obtained by finding the intersection of the two lines. Finally

a Monte Carlo simulation analysis method is used to determine the method's uncertainty. Both the simulation analysis and experimental results showed that the center of gravity measurement error is within 0.3 mm. Thus

the proposed method can achieve high-precision detection of the center of gravity even when the position between the device under test and the measuring device is unknown.

关键词

Keywords

references

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