文章摘要
Evaluation of Uncertainty of Measurement Results of Force Measuring Method of Tire Rolling Resistance Testing Machine
Received:February 10, 2022  Revised:February 10, 2022
DOI：10.12136/j.issn.1000-890X.2022.10.0780
Key Words: tire；rolling resistance coefficient；rolling resistance testing machine；force measuring method；fitting curve；uncertainty
Author NameAffiliationE-mail
LI Fan* Qingdao Product Quality Testing Research Institute 764406193@qq.com 
YANG Kai Qingdao Product Quality Testing Research Institute  
YU Wenyu Qingdao Product Quality Testing Research Institute  
YANG Xiaolei Qingdao Product Quality Testing Research Institute  
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Abstract:
      The uncertainty of the measurement results of the force measuring method of TJR-RR-PC/TB（Y） dual station tire rolling resistance testing machine was evaluated by using a mathematical model and correlating all inputs through the fitting curves of the test data of the tire which covered the inputs involved in the calculation of the tire rolling resistance coefficient and the inputs that affected the measurement results. The results showed that the relative expanded uncertainty of the tire rolling resistance coefficient measured by the tire rolling resistance testing machine in the 95% confidence interval was 0. 012 4（including factor was 2），and the main factors affecting the uncertainty were the repeatability of the measurement of the tester and the inflation pressure.
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