Vehicle velocity measuring method - using mean of several count values representing wheel rotation rate

摘要: The velocity measuring system uses incrementation of a counter to provide count values representing the intervals between pulses supplied from rotation one vehicle wheels, with mean value (2) obtained several successive (1..24). When (Z1..Z4) are being averaged, largest and smallest (Z1,Z3) within each sampling cycle discounted, (Z) or (V) preferably fed through low-pass filter (4). Preferably, sampled at varying intervals. ADVANTAGE - Allows wider manufacturing tolerances for wheel sensor.