Patent ID: 7392693

Claim:
A test stand for motor vehicles comprising a mounting frame, a roller assembly mounted to the mounting frame so as to permit at least slight movement in each of at least two degrees of freedom relative to the mounting frame, with said roller assembly comprising at least two parallel rollers with an endless belt extending about the peripheries of the rollers so as to form a rotatable contact surface positioned to support a rolling wheel of a motor vehicle thereupon, and wherein the at least two degrees of freedom include a first degree of movement corresponding to a horizontal direction of travel along which the vehicle is adapted to move and a second degree of movement corresponding to a horizontal direction which is transverse to the direction of travel, and a drive for rotating the rollers and the endless belt, sensor means for measuring the force or displacement between the roller assembly and the mounting frame in each of the two degrees of freedom, and wherein the roller assembly is mounted to the mounting frame to permit at least slight movement relative to the mounting frame about a further degree of movement corresponding to a vertical direction, and wherein the sensor means is configured for measuring the force or displacement between the roller assembly and the mounting frame in the vertical direction.