应用惯容器提升液压互联悬架性能的研究

Study on Improvement of Performance of Hydraulically Interconnected Suspensions with the Use of Inerters

为进一步改善车辆抗侧倾和抗俯仰的综合性能,将惯容器应用到液压互联悬架中,设计一种含有惯容器的液压互联惯容悬架。建立整车机械-液压耦合动力学模型,应用AMESim搭建模型对车辆抗侧倾与抗俯仰能力以及悬架系统关键参数对车辆性能的影响进行仿真分析。通过仿真分析得:相较于横向稳定杆和普通液压互联悬架,液压互联惯容悬架能够明显提高车辆的抗俯仰和抗侧倾能力,改善车辆操纵稳定性和安全性。液压系统各关键参数对车辆的侧向加速度无明显影响。系统初始油压、马达排量和飞轮转动惯量与车身侧倾角呈负相关,蓄能器初始气体体积与车身侧倾角呈正相关。

In order to further improve the anti-roll and anti-pitch ability of vehicles, the inerter is applied to the hydraulic interconnected suspension. A hydraulic interconnected inerter suspension is designed. The model of the whole vehicle with hydraulic interconnected inerter suspension is established. The AMESim code is used to simulate and analyze the influence of vehicle roll, pitch resistance and key parameters of the suspension system on the vehicle performance. The simulation results show that compared with the anti-roll bar and the hydraulic interconnected suspension, the hydraulic interconnected inerter suspension can significantly improve the anti-pitch and anti-roll ability of the vehicle, and improve the handling stability and safety of the vehicle. The key parameters of the hydraulic system have no obvious effect on the lateral acceleration of the vehicle. The amplitude of the roll angle has negative correlations with oil pressure, the motor displacement and the inertia of the flywheel, and has positive correlation with the gas volume of the accumulator.