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.
- See also report dated Feb 79, PB-297129, and PB-298766.
Otis Elevator CompanyTransportation Technology Division, 11380 Smith Road
Denver, CO USA 80010
Urban Mass Transportation AdministrationOffice of Tech Development & Deployment, 400 7th Street, SW
Washington, DC USA 20590
- Schumacher, P
- Publication Date: 1979-5
- Pagination: 178 p.
- TRT Terms: Automated guideway transit; Automatic control; Computer programs; Control devices; Headways; Intelligent transportation systems; Needs assessment; Personal rapid transit; Rapid transit; Reviews; Safety; Simulation; Traffic signal control systems
- Identifier Terms: FORTRAN (Computer program language)
- Uncontrolled Terms: User needs
- Old TRIS Terms: Advanced systems; Automatic control systems; Longitudinal stability; Rapid transit railways; Signal systems
- Subject Areas: Operations and Traffic Management; Public Transportation; Railroads; Safety and Human Factors;
- 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