新一代轮式机动平台制动性能影响因素分析  

Analysis on Influencing Factors on Braking Performance of New Generation Wheel Motor Platform

作　　者：陈晋市 刘思远[1] 张美荣 王同建 霍东阳 张飞 CHEN Jinshi;LIU Siyuan;ZHANG Meirong;WANG Tongjian;HUO Dongyang;ZHANG Fei(School of Mechanical and Aerospace Engineeringr,Jilin University,Changchun 130025,China;State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun 130025,China;Inner Mongolia First Machinery Group Co Ltd,Baotou 014000,China)

机构地区：[1]吉林大学机械与航空航天工程学院,吉林长春130025 [2]吉林大学汽车仿真与控制国家重点实验室,吉林长春130025 [3]内蒙古第一机械集团有限公司科研所,内蒙古包头014000

出　　处：《湖南大学学报（自然科学版）》2020年第10期26-34,共9页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(51705189);装备预先研究项目(301051103)。

摘　　要：为了确保新一代轮式机动平台的安全性、合理性,研究制动系统中关键制动元件对新一代轮式机动平台制动性能的影响,以某型号8×8全电驱动越野车开发的新一代轮式机动平台全液压制动系统为研究对象,建立了双回路脚制动阀和继动阀理论分析模型,运用AMESim软件建立了新一代轮式机动平台全液压制动系统仿真模型,分析了脚制动阀阀芯遮盖量、上弹簧刚度及复位弹簧初始压缩量对制动性能的影响,并通过实验验证了仿真模型的准确性.分析结果表明:随着上弹簧刚度增加、复位弹簧初始压缩量减小,输出制动力增大,响应时间增长;随着脚制动阀阀芯遮盖量减小,平衡时上弹簧压缩量增大,输出制动力增大;输出制动力受阀芯遮盖量、上弹簧刚度的影响比较敏感,响应时间受上弹簧刚度的影响比较敏感.理论模型和仿真模型为新一代轮式机动平台性能调节及进一步优化提供可靠依据.In order to ensure the safety and rationality of the new generation wheeled mobile platform and to study the influence of the key brake elements in the braking system on the braking performance of the new generation wheeled mobile platform,a theoretical analysis model of the two-loop foot brake valve and the relay valve is established based on the new-generation hydraulic brake system developed by a model 8×8 full-electric drive off-road vehicle.Based on AMESim software,a simulation model of a new generation of full-hydraulic brake system of wheeled mobile platform is established.The influence of cover quantity,stiffness of upper spring and initial compression of reset spring on braking performance is analyzed,and the accuracy of the simulation model is verified by experiments.The analysis results show that the output braking force increases and the response time increases as the stiffness of the upper spring increases and the initial compression of the reset spring decreases;As the cover of the valve core of the foot brake valve decreases,the compression of the upper spring increases during balance and the output braking force increases;The output braking force is sensitive to the cover of the valve core and the stiffness of the upper spring,and the response time is sensitive to the stiffness of the upper spring.The theoretical model and the simulation model provide reliable basis for the performance adjustment and further optimization of the new generation wheeled mobile platform.

关 键 词：全液压制动系统 仿真分析 脚踏阀 继动阀 实验验证 

分 类 号：TH137.7[机械工程—机械制造及自动化]