基于自适应响应面法的动车组牵引变压器弹性吊挂设计  

Design of Elastic Suspension for Traction Transformer of EMU Based on Adaptive Response Surface Method

作　　者：王洋洋 宫岛 周劲松 Wang Yangyang;Gong Dao;Zhou Jinsong(Institute of Railway and Urban Mass Transit,Tongji University,Shanghai 201804,China)

机构地区：[1]同济大学铁道与城市轨道交通研究院

出　　处：《华东交通大学学报》2019年第6期1-6,共6页Journal of East China Jiaotong University

基　　金：“十二五”国家科技支撑计划项目(2015BAG19B02)

摘　　要：针对某型动车组原始吊挂刚度下车体地板振动较大导致乘坐不舒适的现象,对动车组牵引变压器吊挂刚度进行优化设计。在优化设计过程中,采用拉丁超立方设计方法进行采样,根据所得的样本数据,引入自适应响应面法对变压器吊挂刚度进行优化设计,避免了传统响应面法完全依赖于最初样本点的问题。对优化设计后牵引变压器吊挂刚度的减振效果进行验证,车体地板垂向振动加速度得到大幅度降低;计算得到吊挂频率为9.0 Hz,远小于刚性吊挂时车体一阶垂弯频率;并且模态分析后一阶垂弯模态频率保持在10 Hz以上,符合动车组模态匹配要求。In view of the phenomenon that the large vibration of the car body floor leads to uncomfortable riding under the original hanging stiffness of a certain type of EMU, the optimal design of the hanging stiffness of traction transformer of the EMU was carried out. In the process of optimization design, the Latin hypercube design(LHD) method was used to sample. According to the sample data obtained, the adaptive response surface method(ARSM) was introduced to optimize the design of the suspension stiffness of transformer, which avoided the problem that the traditional response surface method was completely dependent on the original sample points. After the design optimization, the hanging stiffness of traction transformer was verified, and it was found that the vertical vibration acceleration of the car body floor was greatly reduced. The hoisting frequency was 9.0 Hz, which was much lower than the first vertical bending frequency of the rigid hanging car body. After modal analysis, the first vertical bending frequency was kept above 10 Hz, which conformed to the requirements of the modal matching for EMU.

关 键 词：吊挂刚度 自适应响应面法 优化设计 拉丁超立方采样 

分 类 号：U270.1[机械工程—车辆工程]