VEHICLE LONGITUDINAL CONTROL AND RELIABILITY PROJECT. VOLUME 3. LONGITUDINAL CONTROL ANALYSIS AND DESIGN. PART B: PRT SYSTEMS

This report, Volume 3, Part B, documents the analytic design and simulation work performed for the Personal Rapid Transit (PRT) longitudinal control system. The objectives of this study were to develop and evaluate candidate longitudinal control systems for the very-short-headway operation of small transit vehicles. The study included a general view of the state-of-the-art in PRT systems, a detailed evaluation of applicable operating policies for such systems, an evaluation of available control design techniques, and an assessment of key hardware implementation issues. The major conclusion of this study is that PRT systems with time headways as low as 0.5 second appear to be feasible. It was found that conventional operating policies are not appropriate for such systems, but that alternate policies can be defined which assure safe and efficient system operation. One such alternative, the "safe-approach" policy, was developed in the course of the study. The study addresses the "safe-approach" policy develops a controller, and proceeds to analyze and test the controller via simulation. The longitudinal controller operated satisfactorily at a headway of 0.5 second for steady-state, overtake, and other maneuvers, as shown by the extensive simulation results which are included. Appendices are included which derive acceleration profiles, contain simulation source code, evaluate key PRT technology issues, and present and discuss a conceptual control system implementation.

  • Supplemental Notes:
    • See also report dated Feb 79, PB-297129, and PB-298766.
  • Corporate Authors:

    Otis Elevator Company

    Transportation Technology Division, 11380 Smith Road
    Denver, CO  USA  80010

    Urban Mass Transportation Administration

    Office of Tech Development & Deployment, 400 7th Street, SW
    Washington, DC  USA  20590
  • Authors:
    • Schumacher, P
  • Publication Date: 1979-5

Media Info

  • Pagination: 178 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00199047
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: OTIS/TTD/VLCR-061-2 Final Rpt., UMTA-IT-06-0148-79-8
  • Contract Numbers: DOT-UT-70048
  • Files: NTIS, TRIS, USDOT
  • Created Date: Nov 7 1982 12:00AM