针对复合变工况下,侧倾与俯仰模式的电液馈能互联悬架(Electro-hydraulic Energy Regeneration Intercon-nected Suspension,EERIS)协调优化问题,设计一种包含环境选择策略的高维多目标粒子群优化算法.建立EERIS减振器阻尼力模型,通过试制样机进行模型试验验证并分析其参数变化在侧倾与俯仰模式下的影响规律;融合全局排序规则与全局密度估计方法,设计高维多目标粒子群优化算法;通过仿真对比EERIS优化前、单独优化侧倾模式后、单独优化俯仰模式后、协调优化侧倾与俯仰模式后的性能参数响应及均方根值.结果表明:复合变工况下,协调优化后的性能参数响应峰值降低;簧载质量加速度均方根值降低10.77％,侧倾角加速度均方根值降低24.77％,俯仰角加速度均方根值降低25.05％,提高车辆的平顺性与抗侧倾、抗俯仰能力;悬架动挠度均方根值降低7.9％,轮胎动载荷均方根值降低3.79％,车辆的操纵稳定性得到改善.
Coordinate Optimization of Roll and Pitch of Electro-hydraulic Energy Regeneration Interconnected Suspensions
Aiming at the coordinate optimization problem of Electro-hydraulic energy regeneration interconnected sus-pension (EERIS) in roll and pitch modes under composite variable conditions,a multi-objective particle swarm optimization algorithm,including an ecological selection strategy,was designed.Firstly,the damping force model of EERIS shock absorb-er was established,and the prototype of the model was prepared,tested and verified.The influence of the variation of its pa-rameters on the roll and pitch modes was analyzed.Then,combining with global ranking rules and global density estimation method,the multi-objective particle swarm optimization algorithm was designed.Furthermore,the performance parameter responses and root mean square values of the vehicle equipped with the EERIS before optimization,after single optimization of the roll mode,after single optimization of the pitch mode,and after coordinate optimization of the roll and pitch modes were simulated and analyzed.The results show that in the improvement of the optimized vehicle performance under com-pound variable working conditions,the peak responses of the performance parameters after coordinate optimization are re-duced,the root mean square value of sprung mass acceleration is reduced by 10.77％,the root mean square value of roll an-gle acceleration is reduced by 24.77％,the root mean square value of pitch angle acceleration is reduced by 25.05％,and the ride comfort of the optimized vehicle is improved.At the same time,this method improves the capabilities of anti-roll and an-ti-pitch.The root mean square value of suspension dynamic deflection is reduced by 7.9％,the root mean square value of tire dynamic load is reduced by 3.79％,and the handling stability of the optimized vehicle is also enhanced.
vibration and wavevibration suppressionelectro-hydraulic interconnected suspensionmulti-objective particle swarm algorithmcoordinate optimizationenergy recovery power
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维普
