汽车阻尼连续可调半主动悬架双层模糊控制

Double Layer Fuzzy Control of Semi-Active Suspension with Continuously Adjustable Damping

为弥补传统控制无法动态分配控制目标权重因子的不足,提出一种适用于阻尼连续可调半主动悬架的双层模糊控制方法。建立包括簧上质量垂向、侧倾、俯仰运动和簧下质量垂向振动的整车7自由度模型,基于模糊控制理论,设计双层模糊控制器,其中第一层用于不同控制目标之间权重因子的动态分配,第二层用于计算各个控制目标下电磁阀控制电流。在不同路面条件和车辆运行工况下进行仿真验证,并与被动悬架进行性能比较,结果表明双层模糊控制器可以有效提升车辆乘坐舒适性和操纵稳定性。

In order to make up for the deficiency of traditional control that the weight factors of control target can not be allocated dynamically,a double-layer fuzzy control method for continuously adjustable damping semi-active suspension is proposed.Based on the fuzzy control theory,a double-layer fuzzy controller is designed,in which the first layer is used for the dynamic distribution of weight factors among different control objectives,and the second layer is used to calculate the control current of solenoid valve under each control objective.The results show that the double fuzzy controller can effectively improve the ride comfort and handling stability of the vehicle.