A miniature milling spindle with Active Magnetic Bearings

被引:58
|
作者
Kimman, M. H. [1 ]
Langen, H. H. [1 ]
Schmidt, R. H. Munnig [1 ]
机构
[1] Delft Univ Technol, NL-2628 CD Delft, Netherlands
关键词
Active Magnetic Bearings; Micro milling; High speed rotation;
D O I
10.1016/j.mechatronics.2009.11.010
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
This paper describes the design and realization of a miniature milling spindle with Active Magnetic Bearings (AMBs) Permanent magnet biased, reluctance type actuators position the rotor in five Degrees of Freedom (DOF). leaving the rotation unconstrained. A rotordynamic model was developed to expedite the controller design, and enabled modeling of the spindle's performance under the influence of cutting forces. A modal controller, including a negative stiffness compensation scheme, was implemented. A cross-feedback controller partly compensates the gyroscopic effect. The spindle with these controllers has a maximum speed of 150,000 rpm (C) 2009 Elsevier Ltd All rights reserved
引用
收藏
页码:224 / 235
页数:12
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