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基于全地面起重机连通式油气悬架单桥四自由度车辆模型,建立ADAMS单桥动力学模型、AMESim液压系统模型以及MATLAB/Simulink的C级路面谱模型,以AMESim作为主控程序进行联合仿真,分析蓄能器初始充气压力、蓄能器容积及悬架油缸中阻尼孔径等参数对车辆平顺性的影响规律。分析结果得出:在一定范围内,随着蓄能器的总容积和悬架油缸阻尼孔径的增大,车身的加权加速度均方根值变小,即油气悬架的平顺性变好,随着蓄能器的初始充气压力的增大,车身的加权加速度均方根值先变小后变大,即油气悬架的平顺性先变好后变差。
Based on all-terrain crane connected hydraulic suspension single-bridge four-freedom vehicle model, ADAMS single-bridge dynamics model, AMESim hydraulic system model and MATLAB / Simulink C-level road surface spectrum model are established. AMESim is used as the main control program to carry out joint simulation. The influence law of initial parameters such as initial charge pressure of accumulator, accumulator volume and damping aperture in suspension cylinder on ride comfort is analyzed. The analysis results show that the rms acceleration weighted body becomes smaller with the increase of the total volume of the accumulator and the damping aperture of the suspension cylinder in a certain range, With the increase of the initial inflation pressure of the accumulator, the root mean square of the weighted acceleration of the vehicle first becomes smaller and then becomes larger, that is, the ride comfort of the hydro-pneumatic suspension first becomes worse.