摘要
对一种新型支承结构———电磁辅助支承的变刚度减振进行研究。电磁辅助支承的结构类似挤压油膜阻尼器,它直接将电磁执行器安装在主支承上,通过控制电磁执行器的电流可以改变整个支承的刚度和阻尼。该支承被应用于一单圆盘对称转子实验系统。通过对转子系统建模,仿真不同支承刚度下转子的振动响应,从而可采用变刚度来保证高速转子以较低的振幅平稳度过临界转速。实验结果证明在一阶临界转速附近,可取得70%的较好减振效果。
The vibration reduction of auxiliary magnetic bearing, a new structure of support, with variable stiffness is studied. The structure of auxiliary magnetic bearing is similar to the structure of the squeeze film damper （SFD）. The new support consists of a main support which provide the main stiffness and an active magnetic actuator which could provide additional stiffness and damping. It is applied to a single disc rotor system and the model of the rotor system is set up, The vibration of the rotor system is simulated by the variable stiffness of support which could controlled by the current of active magnetic beating. With the variable stiffness the rotor could smoothly pass the critical speed. Then the experiment is done and a very good vibration reduction result is achieved.
出处
《机械强度》
EI
CAS
CSCD
北大核心
2006年第4期489-493,共5页
Journal of Mechanical Strength
关键词
减振
电磁执行器
变刚度
Vibration reduction
Active magnetic actuator
Variable stiffness
