重卡驾驶室半主动悬置控制方法

为了抑制在路面激励下某型重卡驾驶室的振动加速度响应,研究基于磁流变阻尼器驾驶室半主动悬置系统的控制方法。建立了重卡驾驶室半主动悬置集中质量动力学模型,分别采用比例积分微分(proportion integration differentiation,简称PID)控制理论和模糊最优控制理论设计控制器,并利用磁流变阻尼器动力特性实验数据对模糊最优控制器的参数进行优化。以驾驶室质心垂直、侧倾及俯仰3个方向加速度为控制目标,利用ADAMS/Simulink联合仿真方法,对比分析PID控制和模糊最优两种控制策略与被动状态下重卡驾驶室悬置振动控制效果。针对实际重卡进行不同速度路面激励下的振动控制实验。仿真和实验结果表明,采用PID和模糊最优控制方法均能有效抑制重卡驾驶室半主动悬置的振动加速度响应,其中模糊最优控制效果总体优于PID控制。

Research on Control Method for Semi-active Heavy Truck Cab Mounting System

In order to reduce vibrations in a heavy truck cab, a lumped mass model is built to find an efficient control method for the semi-active cab mounting system based on a magnetorheological damper. The controller is designed using PID control theory and the fuzzy optimum control method. The parameters of the fuzzy optimum controller are optimized by using the dynamic characteristics experimental data of the magnetorheological damper. By taking the acceleration magnitude of the cab centroid''s vertical, roll and pitch as the control objectives, the numerical simulation is carried out with ADAMS/Simulink software, and two control strategies are applied and compared. Experiments with a real truck experiencing road excitation are performed. The simulated and experimental results show that the PID and fuzzy optimum control can reduce the vibration of the cab compared with the passive status, and the fuzzy optimum control method is more effective.