基于逆虚拟激励法的车辆动载的识别  

Vehicle Dynamic Load Determination Based on an Inverse Pseudo Excitation Method

作　　者：张丽萍[1] 郭立新[1] 

机构地区：[1]东北大学机械工程与自动化学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2011年第3期415-418,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(50875041);教育部新世纪优秀人才支持计划项目(NCEF08-0103);中央高校基本科研业务费专项资金资助项目(N090503001);高等学校博士学科点专项科研基金资助项目(20100042110013)

摘　　要：采用逆虚拟激励法进行车辆行驶随机动载的识别,使用确定性方法求解了车辆平稳行驶动载的识别问题.即已知车辆振动响应的自谱与互谱,在反求路面激励功率谱的基础上,求出车辆行驶动载.并通过计算机模拟识别动载.研究结果表明,根据前轮的响应模拟出的车辆随机动载能较好地反映车辆在不同速度,不同路面上的变化.逆虚拟激励法在求解车辆随机动载上,具有很好的求解精度,为车辆工程实践提出了新的思路和方法.Research was conducted on an inverse pseudo excitation method for vehicle dynamic load identification.When a vehicle is in stationary random vibration,using a deterministic method solves the vehicle dynamic load spectrum recognition problem.The auto-PSD and cross-PSD of vehicle vibration response are known.Based on reversing the power spectrum of road excitation,vehicle dynamic load PSD was obtained.An inverse pseudo excitation method for solving the vehicle dynamic load spectrum showed good solution accuracy,and can suggest new ideas and methods for vehicle engineering,as well as having broad application prospects.

关 键 词：逆虚拟激励法 车辆动载荷 路面激励谱 1/2四自由度车辆振动模型 

分 类 号：U461.4[机械工程—车辆工程]