液压互联馈能悬架特性分析与试验

Characteristics Analysis and Experiment of Hydraulic Interconnected Energy-regenerative Suspension

针对互联悬架能耗过大却不能回收悬架振动能量的问题,提出了一种液压互联馈能悬架系统。阐述了液压互联馈能悬架的结构及工作原理,建立了AMESim动力学模型,并设计了恒流馈能电路,研究了在正弦路面与随机路面输入激励下的动态性能,并在此基础上进行了台架试验,试验与仿真结果基本吻合。结果表明:与未加入恒流电路控制的液压互联悬架相比,采用恒流电路控制的液压互联馈能悬架具有更佳的整体动态性能,其侧倾角加速度、车身垂直加速度均有所下降,并在此基础上实现了对车身振动能量的回收,为液压互联馈能悬架的模式切换控制提供了理论基础。

In view of the problem that the energy consumption of interconnected suspension is too large and the vibration energy of the suspension cannot be recovered,a new type of hydraulic interconnected power system was presented,which can improve the dynamic performance of the whole vehicle and recover the vibration energy of the suspension. Compared with the passive interconnected suspension,the hydraulic interconnected energy regeneration suspension structure adopted the hydraulic motor to replace the damping valve. The hydraulic rectification bridge was used to rectify the pipeline. On this basis,a constant current control feed circuit was designed. On the one hand,it can be used to recover and store the suspension vibration energy. On the other hand,the constant current value also can be changed to improve the dynamic performance of the whole vehicle. The structure and working principle were introduced,the AMESim dynamic model was established,and the constant current feed energy circuit of the hydraulic interconnected power supply system was designed. A preliminary study on the dynamic performance of the input excitation in sinusoidal and random pavement was studied. On the basis of this,the bench test was carried out,and the experiment and simulation results were basically consistent.Results showed that compared with the hydraulic interconnected energy-regenerative suspension without the control of constant current circuit,the hydraulic interconnected energy-regenerative suspension with the control of constant current circuit had a better overall dynamic performance,the angle acceleration and the vertical acceleration of the vehicle body were decreased,and the recovery of the vibration energy of the vehicle body was realized,which provided a theoretical basis for the mode switching control of the hydraulic interconnected energy-regenerative suspension.