The fuzzy controller is built up by taking the vehicle vibration displacement error and its change as inputs, using the balancing method to accomplish fuzzy inference and using Runge-Kutta equation to calculate the displacement of the damper piston rod. 模糊控制器以车体振动位移误差及其变化率为输入,用重心法进行模糊推理可调阻尼力,运用龙格-库塔法计算出阻尼器活塞杆的位移。