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汽车安全与节能学报

JASE ›› 2018, Vol. 9 ›› Issue (3): 281-287.DOI: 10.3969/j.issn.1674-8484.2018.03.006

• 汽车安全 • 上一篇    下一篇

汽车碰撞试验假人零部件质心测量方法及装置

解文娜1，颜凌波1*，张伟锋1，曹立波1，汤 骏2   

  1. （1. 湖南大学 汽车车身先进设计制造国家重点实验室，长沙 410082，中国；2. 吉利汽车研究院，杭州 311228，中国）
  • 收稿日期:2018-04-12 出版日期:2018-09-30 发布日期:2018-10-08
  • 通讯作者: 颜凌波(1984—)，男( 汉)，湖南，讲师。E-mail: milanylb@hotmail.com。
  • 作者简介:解文娜(1992—)，女( 汉)，湖南，硕士研究生。E-mail: 1029964211@qq.com。
  • 基金资助:

    国家自然科学基金资助项目(51605152) ；汽车噪声振动和安全技术国家重点实验室2015 年度开放基金资助项目(NVHSKL-201509) 。

Measurement method and measurement device for the dummy parts’ gravity centers of vehicle crash test

XIE Wenna1, YAN Lingbo *, ZHANG Weifeng1, CAO Libo1, TANG Jun2   

  1. (1. State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha 410082, China; 2. Geely Automotive Research Institute, Hangzhou 311228, China)
  • Received:2018-04-12 Online:2018-09-30 Published:2018-10-08

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摘要：

假人质心位置是汽车碰撞试验所需要保证的重要参数。该文提出了一种汽车碰撞试验假人零部件质心坐标的测量方法。根据力矩平衡原理，采用间接测量结果不确定度的估计方法， 对测量方法进行了理论误差分析。用该测量方法及单片机技术，设计并制作了一台能直接显示假人零部件质心坐标的测量装置，并进行了试验验证。结果表明：测量精度与所测部件的质量及3 个传感器的支撑点之间的距离相关。调整3 个测力点之间的距离，可提高测量精度。该测量装置操作方便；传感器的支撑点间距为200 mm 工况下，质心测量精度70 μm，而最大理论误差29 μm。

关键词: 汽车被动安全, 汽车碰撞试验, 假人, 零部件质心, 力矩平衡, 单片机

Abstract:

Proposed a method to measure the gravity center of vehicle crash test dummy parts, because the position of gravity center is an important parameter that needs be guarantee. Used an estimation method of uncertainty estimation in indirect measurement based on the moment balance principle to analyze the  measurement error. Designed and manufactured a device to measure and display the gravity center of crashtest dummy-parts directly based on single chip microcomputer technology. Tests validated the accuracy of the device. The results show that the measurement accuracy is related to the mass of dummy parts and the distance between 3 supporting points. The device is easy to operate with a gravity-center measuring-precision of 70 μm at a 200 mm distance between the supporting points of sensors, while the maximum theoretical error of this method is 29 μm.

Key words: automotive passive safety, vehicle crash tests,  dummy, parts&rsquo, gravity centers, moment equilibrium, single-chip micro computers