路面不平度统计特性的改进

Improvement of Statistical Characteristics of Pavement Roughness

基于路面不平度统计特性两种形式均方根值相等原理,提出标准形式给定的空间频率范围,采用1/4汽车两自由度系统建立了振动响应量的统计特性描述,验证了确定的空间下截止频率的有效性。结果表明,确定的空间下截止频率具有理论的正确性和应用的有效性。

Based on the principle that the root mean square values of the two forms of the statistical characteristics of road roughness are equal,the space frequency range given by the standard form is proposed,and the statistical characteristics description of the vibration response is established by using a 1/4 automobile two degree of freedom system,which verifies the effectiveness of the cut-off frequency under the determined space.The results show that the determined cut-off frequency in the space has theoretical correctness and application effectiveness.