Patent ID: 8768491
Filing Date: 2014-07-01
Classification: B41F,B41P,B65H

Abstract:
1. A method for axis correction in a processing machine, which has at least one axis for processing a material, at least one detection device for detecting a processing parameter and at least one controller device for calculating a controller output variable for axis correction of the at least one axis using the detected processing parameter, wherein the method is implemented iteratively, such that feedforward control output values for the feedforward control of the axis correction are determined for an (n+1)th change in rotation speed of the at least one axis using observation of at least one of the controller output variable and/or the processing parameter during an nth change in rotation speed of the at least one axis, wherein a first functional relationship is defined between the feedforward output value and the speed, the first functional relationship including a first compensation value that is dependent upon the speed, wherein a second functional relationship is defined between the feedforward output value and the acceleration, the second functional relationship including a second compensation value that is dependent upon the acceleration, wherein the first and the second compensation values are each determined using the observation of the controller output variable or the processing parameter, wherein the first compensation values for the feedforward control of the axis correction during the (n+1)th change in rotation speed are determined from a first correction value and the first compensation value from the feedforward control of the axis correction during the nth change in rotation speed, wherein the second compensation values for the feedforward control of the axis correction during the (n+1)th change in rotation speed are determined from a second correction value and the second compensation value from the feedforward control of the axis correction during the nth change in rotation speed, and wherein the second correction value is determined with reference to the controller output variable or the processing parameter at a third speed during the nth change in rotation speed, an acceleration value during the nth change in rotation speed, and a differentiated controller output variable or a differentiated processing parameter, respectively, during the nth change in rotation speed.