Importance

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Abstract

The invention relates to a control method applied to an automated work cell which includes at least one robot arm (4) having at least three degrees of freedom controlled according to a plurality of control axes (A1-A6; X, Y, Z, Rx, Ry, Rz); a control centre (8); a device (6) for controlling the robot arm (4), which includes a plurality of motor controllers (61-66) each controlling the operation of one motor (M1 -M6) along one axis, suitable for operating at least one portion of the robot arm (4); and a communication bus (14) between the control centre (8) and the device (6) for controlling the robot arm (4). Said method includes steps that consist of: a) associating with each axis (A1-A6; X, Y, Z, Rx, Ry, Rz) for controlling the movement of the robot arm (4) a controller having an imaginary axis intended for receiving instructions and controlling at least one motor according to said instructions; b) determining, in the control centre (8) and for each axis (A1-A6; X, Y, Z, Rx, Ry, Rz) for controlling the movement of the robot arm (4), instructions (Cri) intended for the imaginary-axis controller corresponding to each one of said axes; and then c) sending the instructions (CU) determined in step b) to a single arithmetic unit (10) belonging to the device (6) for controlling the robot arm (4).

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First Claim