考虑俯仰振动的摩托车平顺性多目标优化  

Multi-objective Optimization for Motorcycle Ride Comfort with Consideration of Pitching Vibration

作　　者：徐中明[1,2] 杨建国[2] 张志飞[2] 李仕生[2] 

机构地区：[1]重庆大学,机械传动国家重点实验室,重庆400030 [2]重庆大学机械工程学院,重庆400030

出　　处：《汽车工程》2012年第11期1054-1058,1053,共6页Automotive Engineering

基　　金：高等学校博士学科点专项科研基金(20100191110004)资助

摘　　要：采用摩托车动力学专用软件BikeSim建立了摩托车整车模型,先在B级路面和路面脉冲输入两种工况下分别对整车平顺性进行了仿真;后又以俯仰和垂向振动加速度均方根值最小化为目标,以悬架特性参数为设计变量,采用iSIGHT为优化平台,集成BikeSim和MATLAB进行了多目标优化,得到了Pareto前沿。优化后的俯仰与垂向振动的曲线与数据和优化前仿真结果的对比表明,摩托车平顺性得到了改善。A Model for motorcycle is established with the motorcycle dynamics software BikeSim,and the simulations on motorcycle ride comfort are conducted under two conditions of B-grade road stochastic and pulse excitations.Then with minimizing the acceleration root-mean-square values of both pitching and vertical vibrations as objectives,the characteristic parameters of suspension as design variables,and iSIGHT as platform integrating BikeSim and MATLAB,a multi-objective optimization is performed with Pareto frontier obtained.The results of comparison between the curves and data of pitching and vertical vibrations before optimization and related simulation results before optimization indicate that the ride comfort of motorcycle is improved.

关 键 词：摩托车 平顺性 多目标优化 PARETO前沿 

分 类 号：U483[交通运输工程—载运工具运用工程]