Patent ID: 6813938
Filing Date: 2004-11-09
Classification: G01M

Abstract:
A method of controlling a biaxial wheel test stand for simulating driving loads, the test stand including a load unit having a servo-hydraulic vertical load cylinder for adjusting a vertical force, a servo-hydraulic load cylinder for adjusting a horizontal force, and a pivot head which can be adjusted by means of a camber cylinder about a head pivot point for adjusting the magnitude of a camber angle of a wheel to be tested, the test stand further including a drive unit with a driven drum having starting rings, the wheel to be tested being pressed against the starting rings pressed with the load unit, whereby the vertical load cylinder and the horizontal load cylinder are adjusted by controlling the vertical and horizontal forces respectively and the camber cylinder by controlling the angle, said method including the steps of adjusting the horizontal force, the vertical force and the camber angle based on the wheel radial force and the wheel side force previously determined during a road test, and using the position of a point of application of a resulting force of the wheel radial force and the wheel side force as the control magnitude for the camber angle.