考虑阻尼影响的动力总成悬置系统解耦研究

摘要

To meet the demand in line with the actual working conditions of decoupling, the paper faced on the automotive mounting system and construct the analyze model of automobile powertrain mounting system, analyze the automobile powertrain mounting system include the damping. And then, to solve the problem of the differential equation of automobile powertrain mounting system, the Laplace transform was used, calcu-late the nature frequencies of automobile powertrain mounting system that include proportional damping and non-proportional damping. At last, the optimized software was developed by the MATLAB, take the vehicle for example, also making use of the software compare with the ADAMS. The nature frequencies of the soft-ware are same, demonstrates the software is reliable and the method is available.%为满足符合实际工况的解耦需求,针对有阻尼条件下的车辆悬置系统,建立了包含阻尼参数的动力总成悬置系统模型;然后,对比例阻尼和非比例阻尼的动力总成悬置系统进行理论分析,采用拉普拉斯变换求解有阻尼的悬置系统微分方程,计算了在比例阻尼和非比例阻尼影响下系统的固有频率;最后,利用MATLAB软件开发了相应的解耦平台,并以某型号商用车为例,在ADAMS中建立模型进行仿真验证.二者固有频率一致,证明了方法的有效性与软件结果的可靠性.