FUNDAMENTAL STUDIES IN THE AUTOMATIC LONGITUDINAL CONTROL OF VEHICLES

The achievement of safe and efficient longitudinal control is probably the most significant technical problem associated with individual-vehicle transport systems such as PRT, dual-mode, and the automatic highway. The accomplishments over the first year of a two-year study include: (a) the development of a technique, which involves the use of discrete elements embedded in the guideway, for measuring vehicle position; (b) the development of an approach employing audio frequencies and helically wound transmission lines for providing continuous position reference information, to a string of moving vehicles; (c) the partial development of a promising technique for the accurate measurement of instantaneous velocity; (d) the development of a validated model for a vehicle's propulsion system dynamics; and (e) the design and testing of a vehicle controller which provides excellent tracking and a comfortable ride under all normal control conditions.

• Supplemental Notes:
  • Prepared in cooperation with Federal Highway Administration, Washington, D.C.
• Corporate Authors:

  Ohio State University, Columbus

  Transportation Control Laboratory
  Columbus, OH  United States  43210

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  Department of Transportation

  Office of University Research, 1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Fenton, R E
  • Olson, K W
  • Mayhan, R J
  • TAKASAKI, G M
  • Chu, P M
• Publication Date: 1975-7

Media Info

• Pagination: 198 p.

Subject/Index Terms

• TRT Terms: Automatic control; Automation; Doppler radar; Dual mode transportation systems; Dynamics; Electric drives; Electromagnetic frequencies; Guideways; Location; Mathematical models; Monitoring; Pharmacology; Position fixing; Prosecution; Riding qualities; Safety; Spacing; Speed control; Telecommunications; Tracking systems; Traffic control; Urban transportation; Vehicles; Velocity
• Uncontrolled Terms: Longitudinal; Monitors; Tracking
• Subject Areas: Highways; Operations and Traffic Management; Planning and Forecasting; Public Transportation; Safety and Human Factors; Security and Emergencies; Terminals and Facilities; Vehicles and Equipment;

Filing Info

• Accession Number: 00137438
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: RF-3944A-1-1 Final Rpt., DOT/TST-76/79
• Contract Numbers: DOT-OS-40100
• Files: NTIS, TRIS, USDOT
• Created Date: Sep 16 1981 12:00AM