Patent ID: 6236954
Filing Date: 2001-05-22
Classification: B60T,G01P

Abstract:
Process for estimating the speed of a vehicle or of an assemblage of vehicles, based on measuring the speeds of the mechanically independent wheels, while all the wheels are slipping with respect to the rolling surface, characterized in that the speed of the vehicle or vehicles V(t) is estimated from the relation: ##EQU24##in which:M denotes the mass of the vehicle,g denotes the acceleration due to gravity,.alpha.(t.sub.1.sup.-) denotes the slope or incline of the rolling surface just before all the wheels of the vehicle begin to slip,F.sub.ri (t) denotes the reaction force of the rail on wheel No. i of the vehicle,Ra(t) denotes the resistance to forward motion exerted on the vehicle before all the wheels begin to slip, andn denotes the number of groups of independent wheels.