By Topic

Acceleration feedforward control for active magnetic bearing systems excited by ground motion

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 $31
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

1 Author(s)

When a magnetic bearing-rotor system is excited by ground motion, the rotor may come into contact with the stator because of its low stiffness and the system may suffer heavy damage. Although magnetic bearings are equipped with touchdown bearings for emergencies such as earthquakes, it is desirable to design a controller which can restrain the foundation-excited response of a rotor within the designed gap. In proportional-integral-derivative (PID) control, gains have to be adjusted for many purposes and tradeoffs in control performance are inevitable. The paper thus presents acceleration feedforward control methods designed to reduce the ground-motion response of the active magnetic bearing system without sacrificing other control performances. When this acceleration feedforward control is applied to an experimental apparatus, the response of a rotor to ground motion is reduced to about half that by PID control alone. Furthermore, this suppression of the response is carried out with less control current

Published in:

Control Theory and Applications, IEE Proceedings -  (Volume:145 ,  Issue: 2 )