DYNAMIC BEHAVIOUR OF A ROAD VEHICLE WITH REAR WHEEL ADAPTIVE BRAKING CONTROL

Initially the vehicle response during braking is investigated with the aid of a mathematical model having A realistic road input. Using an integrated hybrid computer, the road-tyre characteristics are simulated by generating non-linear functions on the digital computer, while the mathematical model is described on the analogue computer with parallel logic facility. An adaptive braking control system is proposed which measures and processes the rear-wheel motion. Activation of the system occurs when the wheel deceleration and a quasi wheel slip reach given reference values. The adaptive system as developed and optimised on the hybrid computer is implemented on the rear wheels of the test vehicle. The predicted values of wheel speed, brake-pressure modulation, stopping distance and vehicle yaw are shown to compare favourably with the test results.(a) /TRRL/

• Corporate Authors:

  Institution of Mechanical Engineers

  1 Birdcage Walk
  London SW1H 9JJ,   England 
• Authors:
  • Earles, SWE
  • Aurara, B R
• Conference:
  • Institution of Mechanical Engineers Proceedings
• Publication Date: 0

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 233-244
• Serial:
  • Volume: 190
  • Issue Number: 197

Subject/Index Terms

• TRT Terms: Analog computers; Brakes; Braking; Braking performance; Digital computers; Dynamics; Mathematical models; Rolling contact; Simulation; Speed; Stopping distances; Vehicle dynamics; Vehicle rear end; Vehicles; Wharves; Wheels; Yaw
• Uncontrolled Terms: Rear
• Old TRIS Terms: Vehicle responses
• ITRD Terms: 1057: Air transport network; 1361: Brake; 1874: Braking; 1695: Braking distance; 5440: Contact (tyre road); 8673: Digital computer; 5473: Dynamics; 6473: Mathematical model; 9067: Rear; 9103: Simulation; 1372: Wheel
• Subject Areas: Highways; Safety and Human Factors; Vehicles and Equipment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 00157386
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Analytic
• Files: ITRD, TRIS
• Created Date: Oct 13 1977 12:00AM