CHARACTERISTICS OF A LINEAR REGULATION CONTROL LAW FOR VEHICLES IN AN AUTOMATIC TRANSIT SYSTEM

Automatic speed and headway regulation of closely spaced vehicles by use of a linear single-car-follower control law is examined. Performance criteria are identified and formulated as algebraic relations for controller gains applied to both the vehicle's tachometer feedback and to inputs representing the relative velocity and the spacing variation between vehicles. A parameter using the ratio of stopping distance of a vehicle under control to the emergency stopping distance is discussed. It is shown that design criteria are dependent on knowledge of the vehicle loading and the velocity of headwinds encountered during operation.

• Corporate Authors:

  Johns Hopkins University, Laurel

  Applied Physics Laboratory, 11100 Johns Hopkins Road
  Laurel, MD  United States  20723-6099
• Authors:
  • Brown, SJJ
• Publication Date: 1972-1

Media Info

• Pagination: 91 p.

Subject/Index Terms

• TRT Terms: Algebra; Analysis of variance; Automatic control; Car following; Emergencies; Flow; Guideways; Headways; Intelligent transportation systems; Mathematical models; Passenger cars; Passenger vehicles; Spacing; Speed; Stopping; Stopping distances; Traffic regulations; Transportation; Velocity; Wind pressure
• Uncontrolled Terms: Transportation systems
• Old TRIS Terms: Advanced systems; Linear flow; Single car follower regulation system
• Subject Areas: Operations and Traffic Management; Planning and Forecasting; Transportation (General);

Filing Info

• Accession Number: 00041871
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: APL/JHU-CP009/TPR020Final Rpt
• Contract Numbers: DOT-UT-109
• Files: TRIS
• Created Date: Mar 9 1973 12:00AM