摘要
建立了研究车身垂直振动与纵向角振动的四自由度汽车双轴悬架动力学模型及其Simulink仿真模型,提出了一种通过分析Simulink时域仿真数据求解前后悬架幅频特性不同、悬挂质量分配系数不等于1的汽车一般双轴悬架模型双输入下折算幅频特性的方法。通过此方法可方便地求出车身纵轴上任一点垂直振动加速度和车身俯仰角加速度等对前轮路面不平度输入的幅频特性,从而进一步研究悬架的各种参数对悬架动态特性的影响。
The four-DOF automobile dynamic model and its dual-axis suspension Simulink model are established for researching the vehicle body vertical vibration and longitudinal angular vibration,a method is presented to obtain the two-input amplitudefrequency characteristics of the automobile general dual suspension model which the amplitude-frequency characteristics of the front and rear suspensions are different and the distribution coefficient of the mass suspension is not equal to one by analyzing the data of time-domain simulation of Simulink.By using this method,the amplitude-frequency characteristics by the front input of road surface roughness of vertical acceleration of any point on vehicle body and the rotary acceleration of vehicle body are conveniently obtained,and thus the effects of various parameters of suspension on the suspension Dynamic characteristics are easier to be studied.
出处
《农业装备与车辆工程》
2010年第4期24-27,30,共5页
Agricultural Equipment & Vehicle Engineering
关键词
汽车
双轴悬架
仿真
频率响应
automobile
dual-axis suspension
simulation
frequency-response
