兼具馈能与主动抗侧倾功能的电控液压悬架系统设计与研究

为解决特种车辆或载重车辆在极端工况下易侧翻的问题,提出了一种兼具馈能与主动抗侧倾功能的电控液压悬架系统。对该悬架系统的主动抗侧倾模式和馈能模式进行了功能原理设计与分析;针对主动抗侧倾模式与馈能模式,构建了电液悬架系统仿真模型;设计了电液悬架系统主动抗侧倾模糊PID控制策略和侧倾力矩分配方案,以及执行机构逻辑门限值控制策略,并基于Matlab/Simulink、TruckSim和AMESim仿真软件,搭建了电液悬架系统主动抗侧倾控制策略联合仿真平台;对装配有电液悬架系统的车辆模型在极限工况下的抗侧倾性能进行仿真分析,并对车辆在随机路面激励输入下的馈能特性进行仿真分析。结果表明,装配该电液悬架的特种车辆具备较强的防侧翻能力,并具有较好的悬架运动能量回收潜力。

Design and Investigation of an Electro-Hydraulic Suspension System with Active Anti-roll and Energy-Feeding Functions

In order to solve the issue that special vehicles or trucks are prone to rollover under extreme maneuvers, the paper proposes an electro-hydraulic suspension system with both active anti-roll and energyfeeding functions. Firstly, the functional principles of the active anti-roll mode and energy-feeding mode for the electro-hydraulic suspension are designed and analyzed. Then the simulation model of the suspension system is established for the two modes respectively. In addition, the active anti-roll fuzzy PID control strategy and the roll moment distribution scheme have been designed, as well as the implementation of the logic threshold control strategy for actuators in the active anti-roll mode. Moreover, based on Matlab/Simulink, TruckSim and AMESim simulation software, the co-simulation platform is built to support the control strategy in the active anti-roll mode. Finally, the anti-roll performance of the vehicle equipped withthe electro-hydraulic suspension system is simulated and analyzed under extreme maneuvers, and the energyrecovery performance is examined as well under random road inputs. The results show that the vehicle equipped with the proposed electro-hydraulic suspension shows robust anti-rollover performance and good potential for energy recovery from suspension movement.