下横置变刚度叶片弹簧式半主动悬架设计研究  

Design and Research of Spring Type Semi-Active Suspension with Lower Transverse Variable Stiffness Blades

作　　者：王孝鹏[1,2] 刘建军 WAGN Xiaopeng;LIU Jianjun(School of Mechanical&Electronic Engineering,Sanming University,Fujian Sanming 365004,China;Engineering Research Center in Fujian Province University for Modern Mechanical Design and Manufacturing Technology,Fujian San-ming 365004,China)

机构地区：[1]三明学院机电工程学院,福建三明365004 [2]机械现代设计制造技术福建省高校工程研究中心,福建三明365004

出　　处：《机械设计与制造》2024年第12期45-50,共6页Machinery Design & Manufacture

基　　金：福建省中青年教师教育科研专项(JAT190689);绿色成型智能装配创新团队(福建省高校创新团队发展计划)。

摘　　要：通过对叶片簧模态分析及中性文件编制,设计出下横置可变刚度叶片弹簧式半主动推杆悬架,叶片弹簧在与车身不同点固定处的垂向刚度分别为:-2907.3N/mm、2107.2N/mm、708.7N/mm、708.7N/mm;悬架传力模型分析表明:车身侧倾角加速度与叶片弹簧与车身安装处位置到弹簧中心处的距离平方成反比;论文提出一种双模糊控制算法,40km/h绕桩计算显示:底盘高刚度模式下俯仰角加速度、侧倾角加速度、横摆角加速度稳定性能指标分别提升89.4%、53.2%、18.2%;针对50km/h FSAE赛车失稳现象提出下双横置叶片弹簧悬架优化方案,最终稳定性能指标分别提升82.3%、85.2%、41.1%。Through the modal analysis of the leaf spring and the compilation of neutral files,a semi-active push rod suspension with a lower transverse variable stiffness leaf spring is designed.The vertical stiffness of the leaf spring at a different point of the vehicle body is:-2907.3N/mm,2107.2N/mm,708.7N/mm,708.7N/mm.Analysis of the force transmission model of the suspension shows that the vehicle body roll angular acceleration is inversely proportional to the square of the distance between the leaf spring and the vehicle body installation position to the spring center.It proposes a double fuzzy control algorithm.The calculation of 40km/h around the pile shows that the stability performance indexes of pitch acceleration,roll acceleration,and yaw acceleration in the chassis high rigidity mode are increased by 89.4%,53.2%,and 18.2%respectively.Aiming at the instability of the 50km/h FSAE racing car,an optimization scheme for the lower double transverse blade spring suspension was proposed,and the final stability performance indicators were increased by 82.3%,85.2%,and 41.1%respectively.

关 键 词：叶片弹簧 变刚度 传力模型 C特性 双模糊 绕桩仿真 优化 

分 类 号：TH16[机械工程—机械制造及自动化] TH12[机械工程—车辆工程] U270.1[交通运输工程—载运工具运用工程]