Patent ID: 7908917

Claim:
A driving control method of a tire testing machine, the tire testing machine, including: a tire driving electric motor for rotating a tire via a tire shaft; a simulated road surface driving electric motor for moving a simulated road surface; and a controller for giving a rotation command to the tire driving electric motor so that a slippage ratio of the tire with respect to the movement of the simulated road surface is a preliminarily fixed value, and changing rotation speed of the tire, the method comprising: estimating longitudinal force imposed on the tire in accordance with the slippage ratio of the tire in a case where the rotation command is given; determining a torque limitation value for the tire driving electric motor based on an estimated longitudinal force estimate value; and applying the torque limitation value to torque limitation of the tire driving electric motor when the rotation command is given so as to change the rotation speed of the tire.