【摘要】 运用小波变换方法,对车辆的振动响应与路面不平度的关系进行分析.根据路面样本值,运用ARMA模型建立路面不平度时间序列,建立1/2车辆平顺性模型.将路面不平度时间序列作为输入,分析汽车的振动响应.结果表明,将小波变换引入路面激励和汽车振动响应的分析中,可以清楚地了解信号的时频特性,识别车辆振动响应与路面不平度的关系,从而可以通过路面特性分析车辆平顺性能或由振动响应推断路面激励.更多还原

【Abstract】 Relationship between vehicular vibration response and road surface roughness is analyzed through wavelet transform. Time series of road roughness is established by the ARMA model according to road specimens and a 1/2 vehicle ride model is established. Vibration response is analyzed with time series as the input. Excitation of the road and the response of the vehicle vibration are analyzed by wavelet transform. The results indicate that the time and frequency characteristics of the signal can well be revealed and the relation of vehicle vibration response and road surface roughness can be identified by wavelet transform. So the ride quality of the vehicle can be analyzed by road characteristics and the road excitation can be deduced by vibration response.更多还原