By Topic

Use of describing functions for predicting low-loss AMB performance

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)
Diemunsch, K. ; D. Guggenheim Sch. of Aerosp. Eng., Georgia Inst. of Technol., Atlanta, GA, USA ; Tsiotras, P.

Active magnetic bearings (AMBs) offer an alternative to conventional ball bearings. Their main advantages stem from the lack of physical contact between the rotor and the stator, and their potential for active disturbance rejection. AMBs are indispensable for high-speed electromechanical flywheel batteries, which have been proposed recently as a replacement of chemical batteries on-board orbiting satellites. In order to be competitive with chemical batteries, these flywheel batteries must operate at very high speeds and have low dissipative losses. Low-losses imply AMB operation in low flux or current bias. In this paper we analyze the disturbance rejection properties of a recently proposed low-bias AMB controller subject to an imbalance force. We use describing functions to analyze and predict the magnitude of position oscillations of the AMB under the imbalance force.

Published in:

American Control Conference, 2005. Proceedings of the 2005

Date of Conference:

8-10 June 2005