By Topic

Fuzzy logic based control of rotor motion in 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
$33 $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)
M. K. Habib ; Sch. of Eng., Monash Univ. Malaysia, Selangor ; J. I. Inayat-Hussain

Active magnetic bearings (AMB) are increasingly being used as an alternative to rolling element and fluid-film bearings in rotating machinery application. Stable operation of AMB can only be achieved via feedback control of which the most widely used controllers are of the linear PID type. Under extreme conditions, however, the dynamic response of the rotor in AMB becomes highly nonlinear. As a result, the linear controllers are no longer capable of suppressing or controlling the bifurcations of the rotor response. In order to suppress the non-linearity in AMB, a nonlinear control strategy is required. One of such strategies is the use of fuzzy logic based control approach. This paper aims to investigate and analyze the dynamical response of rotors in active magnetic bearings in AMB and presents the development and implementation of a fuzzy logic control strategy for suppressing the non-synchronous response in AMB. This control strategy is expected to stabilize the rotor-bearing system or to delay its onset of instability. Through modeling and simulation of the non-linear rotor response, it is found that for certain operating parameters, the rotor in AMB exhibits non-synchronous response (quasi-periodic or chaotic). However, the use of fuzzy logic control has been able to eliminate the undesirable non-synchronous response and improve the rotor stability performance

Published in:

Cybernetics and Intelligent Systems, 2004 IEEE Conference on  (Volume:2 )

Date of Conference:

1-3 Dec. 2004