摘要
设计了一种转子振动控制用的剪切式磁流变液阻尼器 ,建立了磁流变液阻尼器 -悬臂转子系统的分析模型 ,理论和实验研究了转子系统的不平衡响应特性。研究表明 ,随着施加磁场强度的增加 ,磁流变液阻尼器的阻尼和刚度增大 ,转子系统的临界振幅明显下降 ,系统的临界转速也明显提高。通过简单的开关控制 。
A shear mode magnetorheological (MR) fluid damper used for rotor vibration control is designed, and the theoretical model of a cantilever rotor system with the MR fluid damper is established. The imbalance properties of the rotor system is studied theoretically and experimentally. It is found from the study that as the magnetic field strength in the MR fluid damper increases, the damping and stiffness of the damper are increased. The vibration amplitude of the rotor system is decreased at the critical speed, and the critical speed of the rotor system is increased with the increasing of applied magnetic field. The rotor vibration when passing through the critical speed can be controlled by using simple on/off control method.
基金
国家自然科学基金 (19972 0 5 4 )
广东省自然科学基金 (990 839)资助项目~~
关键词
磁流变换
阻尼器
转子
振动控制
Magnetorheological (MR) fluids, Damper, Rotor, Vibration control
