Active Control of Vehicle Air Cushion Suspensions

[+] Author and Article Information
D. A. Hullender

University of Texas at Arlington, Arlington, Tex.

D. N. Wormley, H. H. Richardson

Massachusetts Institute of Technology, Cambridge, Mass.

J. Dyn. Sys., Meas., Control 94(1), 41-49 (Mar 01, 1972) (9 pages) doi:10.1115/1.3426541 History: Received January 14, 1972; Online July 13, 2010


A primitive vehicle suspension system coupling a simple vehicle model to a guideway having random irregularities is defined. The optimum linear suspension which minimizes a linear combination of vehicle heave acceleration (a passenger comfort index) and suspension-guideway displacement (a measure of required suspension stroke length) is synthesized using a Wiener- Höpf technique. This optimum suspension, which is independent of specific mechanical, magnetic, or fluid methods of implementation, is used to determine the form of active control required to make the performance of a flexible-skirted air cushion suspension approach the optimum performance. The optimally compensated suspension acceleration, flexible base, and gap height excursions are computed and compared with those of optimum passive suspensions. A reduction in acceleration by a factor of 2.7 is possible with optimum active control. Finally, the limitations and constraints in implementing both optimum and suboptimum control of an air cushion suspension were studied using a small scale experimental suspension.

Copyright © 1972 by ASME
Your Session has timed out. Please sign back in to continue.





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