0
Research Papers

On the Influence of Structural Flexibility on Feedback Control Stability for Magnetically Suspended Vehicles

[+] Author and Article Information
Thomas E. Alberts

Aravind M. Hanasoge, Ashraf M. Omran

Aerospace Engineering Department,   Old Dominion University, Norfolk, VA 23529

Since the system considered has only two masses, this is an extreme example of noncolocation. Actual system with approximate colocation may be more forgiving.

Not necessarily the case in actual system with nonzero damping and with approximate colocation.

J. Dyn. Sys., Meas., Control 133(5), 051010 (Aug 05, 2011) (7 pages) doi:10.1115/1.4003802 History: Received January 29, 2009; Revised October 21, 2010; Published August 05, 2011; Online August 05, 2011

This paper presents a simple analysis evaluating the stability threshold for magnetically levitated flexible structures using dissipative colocated controllers. It is shown that with such a control structure, the controller that stabilizes a rigid levitated mass can also stabilize a simple flexible structure with the same overall mass and electrodynamics. Experimental and simulation results are presented to validate this conclusion.

FIGURES IN THIS ARTICLE
<>
Copyright © 2011 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

ODU maglev vehicle on guideway

Grahic Jump Location
Figure 2

Levitation of a simple rigid mass

Grahic Jump Location
Figure 3

U-shaped magnet and rail

Grahic Jump Location
Figure 4

Current feedback loop

Grahic Jump Location
Figure 5

Basic feedback structure

Grahic Jump Location
Figure 6

Simple flexible structure maglev system

Grahic Jump Location
Figure 7

Root locus of a PD controlled colocated system

Grahic Jump Location
Figure 8

(a) Experimental set-up; (b) experimental set-up—Detail A

Grahic Jump Location
Figure 9

Closed-loop time response of m1

Grahic Jump Location
Figure 10

Closed-loop time response of m2

Grahic Jump Location
Figure 11

Response of m2 relative to m1

Grahic Jump Location
Figure 12

Model to represent guideway flexibility

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In