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为保证滚动阻力测试数据的精度,需对影响设备测试性能的关键因素进行评估预测.基于检测设备的测试原理,建立了轮胎滚动阻力的数值仿真模型,通过对采集的传感器输出物理量进行算法处理,模拟多工况下滚动阻力的测试特性.改变转鼓和轮轴中心线的相对基准位置,在对测试数据差异性分析的基础上,采用一次正交回归算法对采集的数据进行误差修正.与实验室的实测数据进行对比验证,趋势性试验表明该测试模型能够正确反映滚动阻力与控制条件之间的响应关系,表明该测试模型具有较高的可靠性;重复性试验表明滚动阻力修正模型能够减小设备的系统误差,提高现有设备的测试精度.仿真结果为相关设备的研发提供了实践依据.
In order to ensure the accuracy of the rolling resistance test data, it is necessary to evaluate and predict the key factors that affect the testing performance of the equipment.Based on the testing principle of the testing equipment, a numerical simulation model of the rolling resistance of the tire is established. By processing the collected sensor output physical quantities, Simulating the test characteristics of rolling resistance under multi-working conditions.On the basis of analyzing the difference of the test data, the orthogonal regression algorithm was used to correct the errors of the collected data.Experiments The results show that the test model can correctly reflect the relationship between rolling resistance and control conditions, indicating that the test model has high reliability. Repeatability tests show that the rolling resistance correction model can reduce System error of small equipment and improve the test accuracy of the existing equipment.The simulation results provide a practical basis for the research and development of related equipment.