Control Strategy for Pneumatic Braking of the Aeromovel System

Aeromovel is a non-conventional steel-wheel steel-rail automated people mover (APM). The operation principle relies on a pneumatic propulsion system based upon the use of blowers that insufflate pressured air inside a duct formed by the box girder of the elevated track. The Aeromovel braking system is a blend of its primary wayside pneumatic brake, accomplished by the use of its unique propulsion principle, and secondarily, by the vehicle onboard anti-lock friction brake for precision stop and redundancy. The work presented in this paper demonstrates a novel control strategy for the pneumatic braking that aims at further improving its behavior and accuracy. The new braking scheme is based on suitably throttling the so-called atmospheric valves (AV) in on-off control actions. The strategy is based on the definition of a desired trajectory (velocity and position) with respect to state space and in pursuing this trajectory by a fitting behavior of such valve, forcing the vehicle trajectory to converge to the desired one. This strategy is known as sliding mode control. In this paper, the design of the control algorithm and the simulation results using a comprehensive model are presented and discussed, showing the effectiveness of the proposed braking strategy.


  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 45-56
  • Monograph Title: Automated People Movers and Automated Transit Systems 2018: Moving to the Future, Building on the Past

Subject/Index Terms

Filing Info

  • Accession Number: 01870738
  • Record Type: Publication
  • ISBN: 9780784481318
  • Files: TRIS, ASCE
  • Created Date: Jan 24 2023 9:28AM