| Popis: |
Acceleration Slip Regulation (ASR) prevents any unnecessary spinning or slipping of driving wheels on the surface with low traction. Wheel slip is common when the wheel encounters any slippery surface which may be caused by water, snow, small pebbles or spillage of vehicle lubricants on road surface. In this paper, an ASR is designed by mapping of a road surface as per the varying coefficient of friction. This enables the Electronic control Unit (ECU) to device a driving strategy to optimize the ASR and take pre-emptive measures to avoid any under-steer or over-steer conditions. The real-time monitoring of the normal reactive force on each wheel has been done that helps in the estimation of the coefficient of friction between the tire and the concerned road surface. The tests were carried out considering numerous samples of engine oil, gear oil, and brake fluids. The proposed technique is effective in the estimation of dynamic TRFC and available traction and is able to optimize the ASR and hence can enhance vehicle efficiency and safety. |
