电液控制的主动横向稳定杆的应用仿真研究

为了改善商用车的侧倾稳定性,设计了一种集液压控制与电机控制的优势于一体,具有较高控制精度和较大反侧倾力矩的电液控制主动横向稳定杆,并以某19座商用车为例,建立了包含转向、俯仰、侧倾,车身垂向运动在内的九自由度整车模型,对其中的主动横向稳定杆设计了一种PID+前馈的控制策略以提高控制精度,减少迟滞,并通过Simulink...

Simulation Study on Application of Electro-Hydraulic Control Active Lateral Stabilizer Bar

In order to improve the roll stability of commercial vehicles,an electro-hydraulic control active lateral stabilizer with high control accuracy and large reverse roll torque is designed,which integrates the advantages of hydraulic control and motor control.Taking a 19-seat commercial vehicle in Iveco as an example,a nine-degree-of-freedom vehicle model including steering,pitching,roll and vertical motion of the body is established.A PID+feedforward control strategy is designed for the active transverse stabilizer to improve the control accuracy and reduce the hysteresis.Simulink and Trucksim joint simulation is used to validate the proposed control strategy.On grade B road with adhesion coefficient of 0.8,three different working conditions,fishhook,steering wheel angle step and double shifting line,are simulated.The results show that,compared with the passive stabilizer,the active stabilizer proposed in this paper can reduce the body roll angle,yaw rate,lateral acceleration and center of mass angle by(10~35)%,greatly improving the roll stability of the vehicle.