By Topic

Zero- and low-bias control designs for active magnetic bearings

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Tsiotras, P. ; Sch. of Aerosp. Eng., Georgia Inst. of Technol., Atlanta, GA, USA ; Wilson, B.C.

In this paper, we present several nonlinear control designs for a single one-degree-of-freedom (1-DOF) active magnetic bearing (AMB). The primary control objective is to globally asymptotically stabilize the mechanical states of an AMB while reducing the AMB power losses. This suggests operation with zero- or low-bias (ZB/LB) flux. We derive a flux-based model for an AMB using a generalized complementary flux condition. This condition is imposed both for ZB and LB operations. A convenient model structure results, in which the ZB mode is a special case of the more general LB mode of operation. We next derive control laws for LB and ZB AMB operation. The control designs borrow ideas from the theory of control Lyapunov functions (clfs) and passivity. The performance of each proposed control design is evaluated via numerical simulations with a high-fidelity AMB model. Implementation issues are also discussed.

Published in:

Control Systems Technology, IEEE Transactions on  (Volume:11 ,  Issue: 6 )