电磁轴承系统中的辅助轴承与振动影响

Assistant bearing with its vibration effect in active magnetic bearing system

出于安全性考虑,实验或应用中的电磁轴承系统通常需要考虑安装辅助轴承。由于辅助轴承并非具有实质性的支承作用,因此一般情况下,在电磁轴承系统设计时,对辅助轴承的振动情况及其对整个磁悬浮系统的影响考虑是极少的。通过一台磁悬浮铣床电主轴样机的实验结果表明,辅助轴承的振动影响有时不仅不能忽略,甚至它对系统的安全运行的影响是至关重要的。

For Safety, there is usually need to set some assistant support units in an active magnetic bearing system whichever for experiment and application, which is called Assistant Bearing. Because the assistant bearings do not ac tually act as working support components in the system, in general design of AMB system, people have less eyes on the considering of the assistant bearings and its vibration effect for the system. This paper shows the experiment re sults of a milling machine tool spindle supported by AMB, it is indicated that sometimes the vibration effects of the assistant bearing should not be ignored, even it will be very important effect for the safe operation of AMB system.