为了改善汽车行驶的舒适性并减小轮胎对路面的动载, 以某载货汽车为研究对象, 建立了多目标优化模型, 并采用统一目标函数法对车辆悬架参数进行优化。优化结果表明:优化后悬架刚度减小而阻尼增大, 且前悬架参数变化较小, 后悬架参数变化较大;相比于优化前, 车身垂直方向加速度均方根值减小了20%, 前轮动载均方根值减小了40%, 后轮变化更显著, 减小了49%;采用多目标优化设计方法不仅可提高车辆自身的舒适性, 而且可减小轮胎对路面的动载。
Abstract
In order to improve vehicle ride comfort and to reduce tyre dynamic load to ground, vehicle model was established for the study of multiple objectives with a truck. The unified objective function method was used for the optimization of vehicle suspension parameters. The optimization results indicate that the values of suspension stiffness decrease and the values of suspension damping increase. The variety of front suspension parameters is less than that of back. Compared with the former, root-mean-square of vertical acceleration of vehicle body decreases by 20%, root-mean-square of dynamic load of front-wheel decreases by 40%, and that of rear-wheel decreases remarkably by 49%. It is shown that using this method not only improves the ride comfort but also reduces the tyre dynamic load to ground.
关键词
汽车工程 /
车辆悬架 /
统一目标函数法 /
参数优化 /
舒适性 /
轮胎动载
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Key words
automotive engineering /
vehicle suspension /
unified objective function method /
parameter optimization /
comfort /
tyre dynamic load
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中图分类号：
U463.33
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参考文献
[1] 王永刚, 郑碧玉.可控阻尼对隔振系统的影响[J].长安大学学报:自然科学版, 2005, 25(5):108-112.
WANG Yong-gang, ZHENG Bi-yu.Effects of Controlled Damping on Isolation System Response[J].Journal of Changan University:Natural Science Edition, 2005, 25(5):108-112.
[2]牛军川, 孙玲玲, 张蔚波, 等.随机路面激励输入下四自由度悬架的特性研究[J].中国公路学报, 2003, 16(4):106-110.
NIU Jun-chuan, SUN Ling-ling, ZHANG Wei-bo, et al.Characteristic Analysis of Four-DOF Suspension Under Randomly Profiled Road Input[J].China Journal of Highway and Transport, 2003, 16(4):106-110.
[3]尹万建, 韩 鹰, 杨绍普.空气弹簧悬架系统在强迫振动下的动力学分析[J].中国公路学报, 2006, 19(3):117-121.
YIN Wan-jian, HAN Ying, YANG Shao-pu.Dynamics Analysis of Air Spring Suspension System Under Forced Vibration[J].China Journal of Highway and Transport, 2006, 19(3):117-121.
[4]郑 玲, 邓兆祥, 李以农.汽车半主动悬架的模型参考自适应控制[J].中国公路学报, 2005, 18(2):99-102.
ZHENG Ling, DENG Zhao-xiang, LI Yi-nong.Model Reference Adaptive Control of Semi-active Suspensions[J].China Journal of Highway and Transport, 2005, 18(2):99-102.
[5]李以农, 郑 玲.基于微分几何理论的汽车半主动悬架非线性振动控制[J].中国公路学报, 2005, 18(1):109-112.
LI Yi-nong, ZHENG Ling.Nonlinear Control of Automotive Semi-active Suspensions Based on Differential Geometry Theory[J].China Journal of Highway and Transport, 2005, 18(1):109-112.
[6]蒋应军, 戴经梁, 陈忠达.重载水泥混凝土路面疲劳方程和车辆轴载的换算[J].长安大学学报:自然科学版, 2002, 22(3):21-24.
JIANG Ying-jun, DAI Jing-liang, CHEN Zhong-da.Fatigue Equation and Axle Load Conversion for Cement-concrete-pavement Under Heavy-load[J].Journal of Changan University:Natural Science Edition, 2002, 22(3):21-24.
[7]任卫群, 张云清, 金国栋.公路车辆对道路破坏性研究的系统化方法[J].中国公路学报, 2005, 18(4):110-114.
REN Wei-qun, ZHANG Yun-qing, JIN Guo-dong.Systematic Research Method for Vehicle-generated Road Damage[J].China Journal of Highway and Transport, 2005, 18(4):110-114.
[8]邓学钧, 孙 璐.车辆-地面结构系统动力学[M].北京:人民交通出版社, 2000.
DENG Xue-jun, SUN Lu.Systematic Dynamics of Structure for Vehicle-pavement[M].Beijing:China Communications Press, 2000.
[9]GB 7031—86, 车辆振动输入路面平度表示方法[S].
GB 7031—86, Expression Way of Road Roughness for Input of Vehicle Vibration[S].
[10]刘寅华, 李 芾, 黄运华.轨道不平顺数值模拟方法[J].交通运输工程学报, 2006, 6(1):29-33.
LIU Yin-hua, LI Fu, HUANG Yun-hua.Numerical Simulation Methods of Railway Track Irregularities[J].Journal of Traffic and Transportation Engineering, 2006, 6(1):29-33.
[11]SIDDHARTHAN R V, YAO J.Pavement Strain from Moving Dynamic 3D Load Distribution[J].Journal of Transportation Engineering, 1998, 124(6):557-566.
[12]任卫群.车-路系统动力学中的虚拟样机[M].北京:电子工业出版社, 2005.
REN Wei-qun.Dummy Prototype for Systematic Dynamics of Vehicle-pavement[M].Beijing:Publishing House of Electronics Industry, 2005.
[13]FAFARD M, LAFLAMME M.Dynamic Analysis of Existing Continuous Bridge[J].Journal of Bridge Engineering, 1998, 3(1):28-37.
[14]CEBON D.Interaction Between Heavy Vehicles and Roads[J].SAE Paper 930001.
[15]梁尚明, 殷国富.现代机械优化设计方法[M].北京:化学工业出版社, 2005.
LIANG Shang-ming, YIN Guo-fu.Methods of Optimization Design for Modern Machine[M].Beijing:Chemical Industry Press, 2005.
[16]廖林清, 刘 鑫, 廖仕利.汽车悬架系统参数的稳健优化设计[J].重庆工业管理学院学报, 1995, 9(4):49-55.
LIAO Lin-qing, LIU Xin, LIAO Shi-li.Steadiness Optimization Design of Suspension Parameters[J].Journal of Chongqing Institute of Technology Management, 1995, 9(4):49-55.
[17]CEBON D.Assessment of the Dynamic Wheel Forces Generated by Heavy Road Vehicles[C]//ARRB.FORS Symposium on Heavy Vehicles Suspension Characteristics.Canberra:ARRB, 1987:199-212.
[18]CEBON D.Theoretical Road Damage Due to Dynamic Tyre Forces of Heavy Vehicles, Part I:Dynamic Analysis of Vehicles and Road Surfaces[C]//Transportation Research Group.Proc.Instn.Mech.Engrs:Part C.Cambridge:Transportation Research Group, 1988:103-108.
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脚注
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基金
国家西部交通建设科技项目(2005 318 812 12)
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