METHOD AND APPARATUS FOR CONTROLLING TYRES

摘要

An apparatus (1 ) for controlling tyres comprises a support plane (2) configured for receiving a tyre (3) with axial middle line plane (4) parallel to the support plane, defining an abutted lateral portion (10a) and a free lateral portion (10b) arranged at a specific height with respect to the support plane. A thrust element (23) is configured for applying, to a measurement surface of the free lateral portion (10b), a force (F) directed towards the support plane. A positioning actuator (19) is operatively associated with the thrust element (23) and configured for moving the thrust element (23) with at least one motion component perpendicular to a rotation axis (X) of the tyre. The apparatus also comprises devices for modifying the angular position of the measurement surface. A control unit is programmed for detecting a first value (U1 ) of output data at each position of the measurement surface as a function of a first value (11 ) of input data maintained substantially constant along at least one complete rotation of the measurement surface around the rotation axis (X) and for detecting a second value (U2) of the output data at each position of the measurement surface. The second value (U2) of the output data corresponds with a second value (I2) of the input data maintained substantially constant along at least one complete rotation of the measurement surface. The control unit comprises a module programmed for calculating, at each position of the measurement surface, a difference (D) between the second value (U2) of the output data and the first value (U1 ) of the output data.