3D contact patch measurement inside rolling tyres.pdfVIP

下载本文档

6
0
约2.73万字
约 9页
2017-03-16 发布于天津
举报
版权申诉

3D contact patch measurement inside rolling tyres.pdf

1、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。。
2、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
4、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
5、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
6、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
7、VIP文档为合作方或网友上传，每下载1次，网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档

3D contact patch measurement inside rolling tyres.pdf

Available online at ScienceDirect Journal of Terramechanics 69 (2017) 13–21 Journal of Terramechanics /locate/jterra 3D contact patch measurement inside rolling tyres A. Glenn Guthrie, Theunis R. Botha, P. Schalk Els ? Vehicle Dynamics Group, Dept. of Mechanical and Aeronautical Engineering, University of Pretoria, Private Bag X20, Hat?eld 0028, South Africa Received 12 February 2016; received in revised form 27 July 2016; accepted 19 September 2016 Available online 11 November 2016 Abstract This paper presents a novel method for capturing the 3D pro?le of the inside of a rolling o?-road vehicle tyre at the tyre-road contact region. This method captures the contact region at all times as the vehicle negotiates obstacles. The system uses a pair of inexpensive digital cameras (capable of capturing up to 300 frames per second) and features a purely mechanical stabilisation system to ensure that the cameras capture the contact region at any wheel speed or vehicle acceleration. The captured images are processed using 3D computer vision techniques using an open source computer vision library called OpenCV. Stereo image pairs are used to create clouds of 3D points showing the pro?le of the inside surface with good accuracy. Various obstacles were traversed with the deformed tyre pro?le being compared to the undeformed pro?le. The system improves on current measurement techniques used to measure the contact patch by capturing a large region of the contact patch, providing full 3D surface geometry, as well as remaining centred on the contact patch irrespective of wheel rotation. The system also enables other imaging techniques to be used such as digital image correlation to determine velocity pro?les as well as strain measurements. ó 2016 ISTVS. Published by Elsevier Ltd. All rights reserved. Keywords: Computer vision; Stereography; Tyre deformation; Contact patch; Tyre footprint; Image correlation 1. Introduction The tyre contact patch is an important region in both tyre a