基于特性的商用车整体式车桥及耦合悬架动力学模型研究  

Research on a Property-Based Dynamic Model of the Solid Axle and Coupled Suspension for Commercial Vehicles

作　　者：李力[1] 黄伟 高越[1] 孙磊 朱宝黎 管欣[1] 詹军[1] 姜乐 段春光[1] 崔晨雪 王威 Li Li;Huang Wei;Gao Yue;Sun Lei;Zhu Baoli;Guan Xin;Zhan Jun;Jiang Le;Duan Chunguang;Cui Chenxue;Wang Wei(Jilin University,National Key Laboratory of Automotive Chassis Integration and Bionics,Changchun 130022;China National Heavy Duty Truck Group Co.,Ltd.,Jinan 250000)

机构地区：[1]吉林大学,汽车底盘集成与仿生全国重点实验室,长春130022 [2]中国重型汽车集团有限公司,济南250000

出　　处：《汽车工程》2024年第10期1723-1732,1743,共11页Automotive Engineering

基　　金：吉林省自然科学基金-国家重点实验室(学科类)重大专项(SKL202302014);吉林省长春市重大科技专项(20230301006ZD)资助。

摘　　要：车桥及悬架是汽车的重要部件,为了实时模拟商用车的整体式车桥及多种结构类型的悬架,本文采用基于总成特性的建模技术路线,将车桥的运动解耦为Motion运动学和Ride动力学,将悬架特性划分为耦合承载特性、RC/PC导向特性和耦合K&C运动学特性,创新性地考虑了车桥的俯仰动态效应、桥间承载非线性动态耦合关系、桥间K&C运动学耦合关系,建立了能够激发出商用车制动抖振负面现象的动力学模型,并提出了针对耦合悬架的K&C试验方案和模型参数辨识方法。最后,通过对比K&C试验数据,并与TruckSim模型作对比,系统层级上验证了本模型的精准性;通过将车辆参数填入UniTruck软件,对某款商用车进行了仿真,并与TruckSim仿真结果作对比,整车层级上验证了本模型的有效性。The axle and suspension are critical components of vehicles.To achieve real-time simulation of the solid axle and various suspension structures of a commercial vehicle,the property-based modeling technical route is adopted in this paper.The axle's movement is decoupled into motion kinematics and ride dynamics,while the suspension characteristics are divided into coupled carrying characteristics,RC/PC guiding characteristics,and coupled K&C kinematic characteristics.Innovatively considering the pitch dynamic effect of the axle,the nonlinear dynamic coupling relationship of suspension between axles,and the K&C coupling relationship of suspension between axles,a dynamic model for commercial vehicles is developed to trigger the negative phenomenon of brake vibration.Additionally,a K&C testing method for the coupled suspension and a method for model parameter identification are proposed.Finally,the accuracy of the model is validated at the system level by comparing K&C test data with TruckSim model results.Inputting vehicle parameters into the UniTruck software for simulation and comparing the results with TruckSim simulation,the model’s effectiveness is verified at the vehicle level.

关 键 词：商用车 整体式车桥 耦合悬架 平衡悬架 多联悬架 K&C试验 

分 类 号：U463.3[机械工程—车辆工程] U461.1[交通运输工程—载运工具运用工程]