路面不平度时域模型模拟方法研究

摘要

Road roughness is one of the most important excitation to arise the vibration of a vehicle system. The time-domain model of road roughness is the basis of research in road comfort. In this paper, according to the provision of National standard GB/T 7031-2005 about road roughness, the common methods are discussed in detail to simulate time-domain model of road roughness, including Fourier inverse transform method, partial wave adding method, and filtered white noise method. Finally, simple comparison of them and relevant application field are listed.%路面不平度是引起汽车系统振动的重要激励，路面不平度时域模型是研究公路运输平顺性的基础。本文根据国标GB/T 7031-2005中对路面不平的相关规定，研究讨论了路面不平度时域模型模拟常见的傅里叶逆变换法、谐波叠加法、滤波白噪声方法，对三种方法进行简单对比，并给出相应的实用范围。