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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。
During the measurement of the road surface roughness of the acceleration signal, the measurement of the power spectral density will be in error due to the filtering effect of the test wheel on the road surface. In order to solve this problem, in the simulation environment, by measuring the response of the test wheel of the test device running on a random road with a given pavement level, the filter effect of different diameter test wheels on the same road surface roughness is studied, and the influence relationship is analyzed. Which will provide a reference for the test of the wheel radius of the road roughness test device.