THE STABILITY AND CONTROL OF PIVOT-FRAMED TRICYCLES

A mathematical model for the prediction of the constant speed straight line stability and modal properties of pivot framed tricycles, as functions of forward speed, is developed. The tricycle is treated as consisting of three rigid bodies joined to each other as a chain at the frame pivot and steering axes, and freedoms to move laterally, to yaw, to roll, and to steer are allowed. The rider is taken to be a (rigid) part of the centre frame of the tricycle. The tyres are modelled as responding in non-stationary fashion to lateral and yawing motions, and the front tyre, which cambers with roll and steer displacements, is represented as providing side force, aligning moment, and overturning moment responses to camber instantaneously, these being superposed on the other responses. A set of parameters describing a tricycle (and rider), which has been produced commercially, is employed to generate numerical results, the eigenvalues and eigenvectors of the system. Selected results are presented and their implications, both concerning the vehicle behaviour and the modelling of it, are discussed. For the covering abstract of the conference see TRIS 395019 (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9026504616
• Supplemental Notes:
  • Papers from the Proceedings of the 8th IAVSD Symposium, the Dynamics of Vehicles of Roads and Railway Tracks, Held at Massachusetts Institute of Technology, Cambridge, Massachusetts, August 15-19, 1983.
• Corporate Authors:

  Swets & Zeitlinger

  Heereweg 347B
  2161 CA Lisse,   Netherlands 
• Authors:
  • SHARP, R S
• Conference:
  • Papers from the Proceedings of the 8th IAVSD Symposium, the Dynamics of Vehicles of Roads and Railway Tracks, Held at Massachusetts Institute of Technology, Cambridge, Massachusetts, August 15-19, 1983.
• Publication Date: 1984

Media Info

• Features: Figures; References;
• Pagination: p. 564-577

Subject/Index Terms

• TRT Terms: Automated vehicle control; Conferences; Drivers; Driving; Dynamics; Eigenvalues; Forecasting; Handling characteristics; Mathematical models; Mechanical stability; Motor vehicles; Motorcycles; Prototypes; Speed; Steering; Tricycles; Wheels; Yaw
• Uncontrolled Terms: Three
• ITRD Terms: 8525: Conference; 1772: Driver; 5473: Dynamics; 132: Forecast; 6473: Mathematical model; 1221: Motorcycle; 9109: Prototype; 5408: Speed; 5930: Stability; 9079: Three; 1646: Vehicle handling; 1372: Wheel
• Subject Areas: Bridges and other structures; Highways; Vehicles and Equipment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 00395036
• Record Type: Publication
• Source Agency: Institute for Road Safety Research, SWOV
• ISBN: 90-265-0461-6
• Report/Paper Numbers: REPORT
• Files: ITRD, TRIS
• Created Date: Oct 31 1985 12:00AM