基于磁流变阻尼器的高速机车横向半主动振动控制研究

摘 要：在分析磁流变阻尼器Bouc_Wen立方修正模型及高速机车振动特点基础上，提出应用磁流变阻尼器进行机车振动控制，建立了基于磁流变阻尼器的17自由度高速机车横向半主动模型。针对模型的非线性特征，在简单模糊控制规则基础上，提出根据控制效果实时修正磁流变阻尼器输入参数的自适应模糊控制策略。在MatLab环境中进行仿真，结果表明：与被动控制、简单模糊控制相比，自适应模糊控制能有效衰减机车横向振动；在低频阶段，尤其是对乘坐舒适度影响大的5~8HZ范围内能显著提高高速机车的平稳性和乘坐舒适性。

Semi-active lateral vibration control of a high-speed locomotive based on MR damper

Based on analyzing the vibration characteristic of a high-speed locomotive and the Bouc-Wen model of magnetorheological(MR) damper, a vibration control method based on MR damper was put forward, and a seventeen-de- gree-of-freedom semi-active lateral vibration control model of a high-speed locomotive with MR damper was established. Taking the nonlinearity of the model into account, a fuzzy control rule and a serf-adapt control strategy to modify the input parameter of MR damper in real time according to control effect was put forward. The simulation of the model was studied using MatLab. The simulation results showed that compared with the passive control and simply fuzzy control, the self-a- dapt fuzzy semi-active control strategy with MR damper could attenuate the vibration of the locomotive effectively and im- prove its ride comfort and stability obviously, especially in the range of 5 ～8Hz being sensitive to the human body.