| 摘要 |
PURPOSE:To make a printing position control of a high precision possible. CONSTITUTION:A logical value counter 3 counts the motor driving pulse from a logical control unit 1 to a motor driving unit 2, and the count value is transmitted to a comparison detecting unit 6. An actual position counter 5 counts the output pulse from a rotary encoder unit 4, and the count value is transmitted to the comparison detecting unit 6. The comparison detecting unit 6 compares the count value from the logical value counter 3 and the count value from the actual position counter 5, calculates the difference between these count values, and transmits to a feed-back control unit 7. The feed-back control unit 7 analyzes the calculated value of the comparison detecting unit 6, determines the movement direction and driving step number, and transmits to the motor driving unit 2. |
