By Topic

Shaped time-optimal feedback control for disk-drive systems with back-electromotive force

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)
C. La-orpacharapan ; Electr. & Comput. Eng. Dept., Colorado Univ., Boulder, CO, USA ; L. Y. Pao

In this paper, we describe the design of closed-loop control laws for disk-drive systems that account for back-electromotive force (back-EMF) by using a phase-plane approach. The time-optimal control law for a rigid body is shaped by using input shaping ideas to address the flexible mode, and then the altered rigid body phase-plane trajectories resulting from this shaping are calculated and used to determine a closed-loop controller. Extensions are made to account for damping and slew rate limits. Simulation results show that this control approach leads to near-time-optimal performance without unwanted residual vibrations, good robustness to modeling errors, and faster time response than the previously developed extended proximate time-optimal servomechanism (XPTOS) control, especially when the flexible dynamics are dominant.

Published in:

IEEE Transactions on Magnetics  (Volume:40 ,  Issue: 1 )