| 摘要 |
PURPOSE:To suppress displacement of Y axis during shifting by updating target value to make the target value get near to the command value when there is deviation between the target value and command value. CONSTITUTION:The target value S2 of X axis read out from a memory 2 and present value S3 of X axis read out from a memory 3 are compared by a comparator 4 and the deviation is amplified by an amplifier 5 to control armature current of a motor 6. When the motor 6 rotates, a pulse S7 is generated from an encoder 7 combined to the shaft, and present value of the memory 3 is updated by the number of pulses to bring near to the target value S2 and reduce deviation S4. Similarly, Y axis also controls armature current of a motor 16. At the same time, command value S1 and target value S2 are compared by the comparator 4 and the target value is brought close to the command value by a fixed value. Similarly, if there is difference in the values in Y axis, the target value S12 is brought close to the command value S11 by the same value with the increment of X axis.
|
