Experimental Research on Unbalance Control of Active Magnetic Bearings
Two unbalance control methods, General Notch Filter (GNF) and LMS (least mean square), for active magnetic bearings (AMBs) were applied to a high speed rotor supported by AMBs. The rotor operation was greatly influenced by a large residual unbalance in the rotor and some low frequency vibration modes from the structure of the rotor system. GNF was used to help the rotor to increase its dynamic balance efficiency with two different methods. To achieve a better unbalance cancellation effect for the rotor in a large rotation speed range, GNF and LMS methods were combined in a single unbalance controller and performed in different speed ranges. A simple but effective method was used to achieve a smooth switching of the two methods. Corresponding experiment results are provided. GNF algorithm increased the balance efficiency. The smooth switching of GNF and LMS was successful and the unbalance control effects were improved.
Active Magnetic Bearing Unbalance Control Dynamic Balance
Zhang Kai Zhang Xiaozhang
Department of Engineering Physics, Tsinghua University, Beijing, 100084, China
国际会议
The Twelfth International Symposium on Magnetic Bearings(第十二届国际磁悬浮轴承学术会议)
武汉
英文
480-485
2010-08-22（万方平台首次上网日期，不代表论文的发表时间）