基于悬架效用函数的车身姿态控制  

Body Posture Control Based on Suspension Utility Function

作　　者：陈龙[1] 黄晨[1] 江浩斌[1] 陈蓉蓉[1] 

机构地区：[1]江苏大学汽车与交通工程学院,镇江212013

出　　处：《农业机械学报》2011年第8期15-19,25,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(50875112);江苏省自然科学基金资助项目(BK2010337);江苏省普通高校研究生科研创新计划项目(CX10B_253Z);高等学校博士学科点专项科研基金资助项目(2009322711013);江苏省高校自然科学研究重大项目(09KJA580001)

摘　　要：为了研究悬架控制对车身运动姿态的影响,运用八板块假说对整车模型进行分析,提出了构造悬架效用函数的方法,并且给出了基于熵值法优化权值方法,设计出相应的Simulink控制器;以某车型为例建立整车多体动力学模型,进行了脉冲路面和蛇形道路下不同车速工况的SIMPACK/Matlab联合仿真,将基于悬架效用函数优化的模糊控制和现有其他控制方法的悬架减振效果进行了对比分析;理论分析和仿真试验证明,基于悬架效用函数优化的模糊控制是可行的,较好地改善了车辆的平顺性,并能有效抑制车身俯仰和侧倾运动。In order to study the influence of body posture interdependency on suspension control,the model of full vehicle using eight schematic of vehicle plate was analyzed.An approach based on the suspension utility function and a weighted optimization algorithm based on entropy value was presented.A kind of control strategy used in Simulink was designed.Meantime,taking a certain vehicle as an example,a whole multi-body model of vehicle was built.The SIMPACK/Matlab co-simulation in different vehicle speeds under impulse road and snakelike road was tested respectively.Then,the effects of semi-active suspension with fuzzy logical of optimal suspension utility function and other controls were compared.Theoretical analysis and simulation experiment showed that semi-active suspension controlled with fuzzy logical of optimal suspension utility function was practicable.It could improve ride comfort and restrain pitch and roll motion.

关 键 词：车辆 悬架 效用函数 姿态控制 联合仿真 

分 类 号：U411[交通运输工程—道路与铁道工程]