车辆底盘主动悬架实验台开发与阻尼特性仿真  

Development of Active Suspension Test Bed for Vehicle Chassis and Simulation of Damping Characteristics

作　　者：汪震 彭思仑[1] 王雨蒙[1] 郑晋军[1] WANG Zhen;PENG Si-lun;WANG Yu-meng;ZHEN Jin-jun(College of Automotive Engineering,Jilin University,Changchun Jilin 130025,China)

机构地区：[1]吉林大学汽车工程学院,吉林长春130025

出　　处：《计算机仿真》2021年第4期115-118,229,共5页Computer Simulation

基　　金：吉林大学本科教学改革研究项目(校教字[2019]63号)。

摘　　要：为满足悬架控制系统结构简单,重量轻,能够缓解冲击的设计要求,提高车辆操控稳定性与安全性,对车辆底盘主动悬架实验台开发与阻尼特性仿真展开深入研究。根据车辆底盘主动悬架结构,建立运动微分方程,构建减振器阻尼特性模型;将永磁无刷直流电机作为发电机,设计理想状态下电路,计算电磁执行器的电磁转矩、阻尼与惯性力;分别设计实验台路面激振模块、数据采集与控制模块,完成实验台开发。仿真结果表明,活塞杆直径增大,压缩阻力增大,拉伸阻力减小;阻尼伐孔径越小,阻尼力越大;证明了所提方法设计的实验台性能稳定,可以较好地测试车辆控制性能,对控制器参数整定与优化起到辅助作用。In order to meet the design requirements of simple structure,lightweight and shock relief of suspension control system,and improve the stability and safety of vehicle handling,the development of vehicle chassis active suspension test bench and the simulation of damping characteristics were studied in depth.According to the active suspension structure of vehicle chassis,the differential equation of motion is established,and the damping characteristic model of the shock absorber was constructed;the permanent magnet brushless DC motor was used as the generator,and the circuit under ideal state was designed to calculate the electromagnetic torque,damping and inertia force of the electromagnetic actuator;the road excitation module,data acquisition,and control module of the experimental platform were designed respectively to complete the development of the experimental platform.The simulation results show that the piston rod diameter increases,the compression resistance increases,and the tensile resistance decreases;the smaller the damping diameter is,the greater the damping force is;it is proved that the experimental platform designed by the proposed method has stable performance,can better test the vehicle control performance,and plays an auxiliary role in the parameter setting and optimization of the controller.

关 键 词：车辆底盘 主动悬架实验台 阻尼特性 电磁转矩 微分方程 

分 类 号：TP316[自动化与计算机技术—计算机软件与理论]