商用车驾驶室半主动悬置的建模仿真

Modeling and Simulation of Semi-active Suspension of Commercial Vehicle Cab

对基于可调阻尼减振器的驾驶室半主动悬置系统的控制策略进行了研究,提出并运用了三自由度驾驶室悬置系统模型,简化考虑了驾驶室质心处的垂直、俯仰和侧倾方向的振动,基于线性二次型最优控制原理设计了最优控制模型,并搭建了Simulink模型,仿真结果表明:商用车驾驶室半主动悬置系统通过最优控制,能有效降低驾驶室质心处的垂直加速度、俯仰角加速度和侧倾角加速度,提高了驾驶室的舒适性。

Cab semi-active suspension system control strategy was studied based on the adjustable damping shock absorber. A three degrees of freedom cab suspension system model was proposed and used. The vertical center of mass, pitch and roll direction of vibration in the wheelhouse were simplified. The optimal control model was designed based on the linear quadratic optimal control principle.Simulink model was established. The simulation results show that the optimal control of the semi-active suspension system of commercial vehicle cab can effectively reduce the vertical acceleration, pitch acceleration and roll acceleration at the cab mass center, and improve the comfort ability of the cab.