测试轮直径对路面不平度测试精度的影响

Precision Effect by the Diameter of Testing Tire in Road Surface Roughness Test

在加速度信号的路面不平度测量过程中,由于测试轮的几何外形对路面的滤波作用,会对功率谱密度的测量产生误差。为解决这一问题,在仿真环境下,通过测量在给定路面等级的随机路上行驶的测试装置测试轮的响应,研究不同直径的测试轮对同一路面不平度的滤波作用,分析其影响关系,从而为路面不平度测试装置测试轮轮径的选择提供参考。

The method of testing road surface roughness based on acceleration signal will run out because of the filter effect of shape of the road test wheel.Aiming at this problem,by testing the response of the road test equipment,the filter effect of a series of diameter of the testing tire on testing the same kind of the road surface is studied.And then the relationship between diameter of the wheel and the error of the road surface Power Spectral Density(PSD) are analyzed.With the result,it can make a reference s...