同济大学学报（自然科学版）2017，Vol.45Issue(3)：398-407,10.DOI:10.11908/j.issn.0253-374x.2017.03.014
滤波白噪声路面时域模拟方法与悬架性能仿真
Simulation Method of Road Excitation in Time Domain Using Filtered White Noise and Dynamic Analysis of Suspension
摘要
Abstract
In order to simulate road excitation in time domain appropriately,an analysis was first made on the road excitation in frequency domain based on power spectral density (PSD) of road excitation in spatial frequency.Then a numerical simulation method of road excitation in time domain was derived using filtered white noise.Based on a road excitation simulation in time domain with the filtered white noise method,the sampling frequency of white noise was proposed to be adjusted to the change of the vehicle speed.By analyzing PSD of the generated road excitation in spatial frequency,the generated road excitation in time domain was verified.A comparative study of the road excitation in time domain,and the spectrum as well as the PSD of the road excitations in spatial frequency generated by changing vehicle speed only and that by changing vehicle speed together with the adjusted sampling frequency of white noise show that the latter method agrees well with the standard road classification.A quarter car suspension dynamic performance was simulated with the road excitations generated by different methods,the system response accuracies were compared and analyzed,and thus the importance of the proposed method was validated.关键词
路面不平度/路面时域模型/滤波白噪声/悬架性能分析Key words
road surface roughness/road excitation in time domain/filtered white noise/dynamic analysis of suspension分类
交通工程引用本文复制引用
殷珺,陈辛波,吴利鑫,刘怡伶..滤波白噪声路面时域模拟方法与悬架性能仿真[J].同济大学学报（自然科学版）,2017,45(3):398-407,10.基金项目
国家自然科学基金(51375344,U1564207) （51375344,U1564207）
