| 摘要 |
The invention relates to an open-loop control process for the motional guidance of conveyed material ( 32 ) in a conveying device ( 30 ) and to a corresponding conveying device ( 30 ). The conveying device ( 30 ) has a movable means ( 36 ) for realizing the conveyance and a first motion detector ( 42 ) for measuring a first actual position value (x 1 <SUB>act</SUB>) for the movable means ( 36 ) and a second motion detector ( 40 ) for measuring a second actual position value (x 2 <SUB>act</SUB>) for the conveyed material ( 32 ). The control is herein realized with a position control having a position control clock (T<SUB>pc</SUB>) and with a speed control (GR) having a relatively faster speed control clock (T<SUB>sc</SUB>), in which, in the position control clock (T<SUB>pc</SUB>), desired position values (x<SUB>cmd</SUB>) are preset as the command variable and, in the speed control clock (T<SUB>sc</SUB>), registered first actual position values (x 1 <SUB>act</SUB>) are fed back to the position control, in which the position control is provided, at least in part, in an open-loop control part (NC) and the speed control (GR) is provided in a drive part (A), and in which a control variable (R) is fed back into the position control, which control variable is dependent on second actual position values (x 2 <SUB>act</SUB>) registered in the position control clock (T<SUB>pc</SUB>). A high accuracy and dynamic can thereby be obtained.
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