作　　者： ; ;

机构地区： 佛山大学思源机电一体化研究所

出　　处： 《振动工程学报》 2003年第1期71-74,共4页

摘　　要： 通过实验研究了支承在磁流变液阻尼器和滑动轴承上的转子系统在振动主动控制过程中的运动稳定性问题。实验发现 ,当转子升速、控制电流稳定时 ,随着控制电流的增大 ,在一定转速范围内会出现由滑动轴承引起的油膜涡动和油膜振荡 ;而当转速稳定、突然施加或撤除控制电流时 ,转子的振动可在短时间内达到新的稳态 ,不会发生失稳 ,此后 ,在一定转速和控制电流条件下转子系统仍会发生失稳 ;但采用开关控制抑制转子临界振动时系统能稳定运转。研究表明 。 The response stability with active vibration control of a rotor system supported on a magneto rheological fluid damper and a sliding bearing is studied experimentally. It is found from experiment results that when the rotor is accelerating and the control current is stable, the system can have oil whirl and oil whip in certain speed range caused by the sliding bearing. When the rotating speed is stable and the current is applied on or taken off suddenly, the vibration of the rotor can reach a new stable state in a short time period and no unstable condition occur. But after this short time the system still has the possibility to lose stability at certain speed and current. When the on/off control method is used to restrain the vibration of the rotor at critical speed, the rotor system can run stably. It is shown that the supporting stiffness of the damper determined by the control current is the key factor to affect the stability of the rotor system.

关 键 词： 磁流变液阻尼器 转子 滑动轴承 稳定性 试验研究

领　　域： [理学] [理学]