Influence of Anti-skid Stripes on Weighing Accuracy of Flat DynamicWeighing Instrument Based on Elastic Roller Contact Model
LAI Zhengchuang1,2,3,CHI Hui2,3,YANG Xiaoxiang1,4,ZHANG Weihao1
1. College of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, Fujian 350116, China
2. Fujian Metrology Institute, Fujian Key Laboratory of Force Measurement, Fuzhou, Fujian 350003, China
3. Key Laboratory of Force Measurement for State Market Regulation, Fuzhou, Fujian 350003, China
4. Quanzhou Normal University, Quanzhou, Fujian 362000, China
Abstract：When dynamic weighing is carried out, the vertical undulation of the anti-skid pattern on the scale platform can cause vibrations in the vehicle, affecting weighing accuracy. To address this issue, a dynamic model of the vehicle weighing process was established, considering the compliance characteristics of the tires. An elastic roller contact model was developed, and the equivalent road surface generated by the anti-skid pattern was used as the input excitation for the dynamic model. The influence of a novel symmetrical anti-skid pattern on the accuracy of weighing in a flatbed scale under various factors was analyzed. Simulation results indicate that as the width of the anti-skid pattern increases, the vibration force on the vehicle increases, leading to an increase in weighing error. When the spacing between pit-type anti-skid patterns is 235mm, the excitation frequency generated approaches the natural frequency of the vehicle, causing resonance between the vehicle and the scale platform. The weighing error can reach a maximum of 0.21%. The vibration force and weighing error generated by triangular pit-type anti-skid patterns are lower than those of rectangular pits. Additionally, at higher speeds, the generation of anti-skid patterns results in larger weighing errors.
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2024, Vol. 45 
