逆子结构传递路径分析方法  

Inverse sub-structuring transfer path analysis method

作　　者：莫愁[1] 陈吉清[1] 兰凤崇[1] 

机构地区：[1]华南理工大学机械与汽车工程学院,广州510640

出　　处：《吉林大学学报（工学版）》2015年第6期1751-1756,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(51375170);广东省科技计划项目(2013B090600024;2014B010106002)

摘　　要：利用整车系统和子结构频响函数计算动力总成悬置动刚度,对振动信号进行小波降噪处理,结合工况振动参数计算载荷,然后进行振动或噪声传递路径分析。以一款微型客车为对象对该方法的有效性进行验证。结果表明,该方法与传统传递路径分析方法的精度相仿,但效率比传统方法提高了约50%。An inverse sub-structuring transfer path analysis method is proposed.First,the dynamic stiffness of powertrain mounting system is computed using the frequency response functions of the vehicle system and substructure systems.Then,the vibration signals are processed by wavelet denoising technology,and the loads are computed by combing the vibration data measured in actual condition.Finally,the vibration or noise transfer path is analyzed.A case study is carried out with a mini bus to demonstrate the effectiveness of the proposed method.Compared with conventional transfer path analysis method,the efficiency of the proposed method increases by 50% and the accuracy is equivalent.

关 键 词：车辆工程 传递路径分析 逆子结构技术 小波降噪 神经模糊逻辑算法 

分 类 号：TB53[理学—物理] U461[理学—声学]