MATHEMATICAL MODEL WITH 11 DEGREES OF FREEDOM FOR DYNAMIC SIMULATION OF BEHAVIOUR OF A VEHICLE ON THE ROAD

MODELLO MATEMATICO A 11 GRADI DI LIBERTA PER LA SIMULAZIONE DINAMICA DEL COMPORTAMENTO DI UN VEICOLO SU STRADA

Based upon experimental tests a mathematical model of the "open-loop" variety has been developed to simulate the road behaviour of a vehicle with two axles. It can be seen as part of a more complete "closed-loop" system helping to identify the fundamental parameters influencing handling, and hence the safety, of a vehicle in response to driver inputs, particularly under conditions approaching the limits of adhesion and steerability. There are six degrees of freedom pertaining to the body - three for displacements of the centre of gravity, and three for rotations; there are four freedoms for wheel rotations about their axes, and one freedom characterising the steering-wheel angle. The model is fully explained, and there are comparisons of theory and experiment as well as brief mention of future improvements and developments including its application to various commercial vehicle configurations. (TRRL)

• Corporate Authors:

  Associazione Tecnica dell' Automobile

  Via Carlo Alberto 61
  10123 Turin,   Italy 
• Authors:
  • Tamburro, A
  • Martinetto, F
  • Vianello, M
• Publication Date: 1980-6

Language

• Italian

Media Info

• Features: Figures;
• Pagination: p. 298-303
• Serial:
  • ATA Associazione Tecnica dell'Automobile
  • Volume: 33
  • Issue Number: 6
  • Publisher: Associazione Tecnica dell' Automobile

Subject/Index Terms

• TRT Terms: Adhesion; Behavior; Coefficient of friction; Drivers; Driving; Dynamics; Gravity; Handling characteristics; Mathematical models; Rotation; Safety; Simulation; Steering; Vehicle dynamics; Vehicle performance; Vehicle safety; Vehicles; Wheels
• Uncontrolled Terms: Handling
• Old TRIS Terms: Vehicular safety
• ITRD Terms: 5942: Adhesion; 9001: Behaviour; 5460: Coefficient of friction; 1772: Driver; 5473: Dynamics; 5419: Gravity; 6473: Mathematical model; 6406: Rotation; 1665: Safety; 9103: Simulation; 1834: Steering (process); 1255: Vehicle; 1646: Vehicle handling; 1372: Wheel
• Subject Areas: Highways; Safety and Human Factors; Vehicles and Equipment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 00331162
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Aug 15 1981 12:00AM