汽车发动机半主动悬置动特性建模与试验研究  

Modal Development and Experimental Study for Dynamic Characteristics of Vehicle's Switchable Engine Mounts

作　　者：郑玲 刘巧斌[2] 犹佐龙 徐小敏 陈代军 杨亮 

机构地区：[1]汽车噪声振动和安全技术国家重点实验室,重庆400120 [2]重庆大学机械传动国家重点实验室,重庆400044 [3]长安汽车研究总院,重庆400120

出　　处：《机械科学与技术》2017年第12期1935-1940,共6页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家重点实验室开放基金项目(NVHSKL-201405)资助

摘　　要：汽车半主动悬置是中高级轿车和SUV提高舒适性的关键技术。针对两种不同类型的结构参数控制式半主动悬置,分别建立了集总参数模型,综合使用试验法和遗传算法对相关集总参数进行了辨识,分析了两种不同半主动悬置的动特性,试验验证了集总参数建模及辨识方法的正确性,为半主动悬置的选型设计、优化及性能预测分析提供设计方法和手段。Switchable engine mounts （SEM） play a significant role in the design of High-intermediate level sedans and SUVs. Two kinds of switchable engine mounts with orifice tunable and decoupled stiffness variable, respectively, are introduced in this paper. Lumped parameter models are developed and their key parameters are identified by experiment and genetic algorithm. The dynamic characteristics of both on/off modes are simulated and tested for each mount, agreement between the results of the two methods is achieved. Finally, the sensitivity of parameters was analyzed. The present work can provide some reference for the design,improvement and optimization of SEM.

关 键 词：半主动悬置 集总参数 灵敏度分析 遗传算法 动特性 

分 类 号：TH113[机械工程—机械设计及理论] U464[机械工程—车辆工程]