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应用ADAMS软件对某车辆的前悬架运动学特性进行了仿真分析,揭示了运动特性参数在悬架运动过程中的变化规律,对导向机构存在的问题进行了优化计算,优化后轮距和前轮侧向滑移量都在理想的范围变动。为研究悬架对车辆行驶稳定性的影响,提出了悬架阻尼神经网络PID控制方法,对车辆实行横摆稳定性闭环控制。针对单移线和阶跃转向两种典型工况,应用MATLAB软件进行了仿真。结果表明,通过悬架阻尼来控制车辆侧偏运动,使左右车轮的载荷转移明显减小,从而能有效抑制车辆的过度转向特性。
The kinematics characteristics of the front suspension of a vehicle are simulated by ADAMS software. The variation regularity of the kinematic parameters during the suspension movement is revealed. The problems existing in the guide mechanism are optimized and the rear wheelbase and front The amount of lateral slip of the wheels varies in the ideal range. In order to study the influence of the suspension on the driving stability of the vehicle, a suspension damping neural network PID control method is proposed to implement the closed-loop control of the yaw stability of the vehicle. Aiming at the two typical working conditions of single shift line and step steering, the software MATLAB was used to simulate. The results show that by controlling the vehicle side suspension by damping the suspension, the load transfer of the left and right wheels is obviously reduced, which can effectively restrain the oversteering characteristics of the vehicle.