| 摘要 |
PURPOSE:To rapidly start or stop to a plurality of positions within the primary winding mounting range by composing a feedback circuit butted at the real speed to the position command. CONSTITUTION:A speed instructing device 12 outputs a speed command 12a in response to the information from a position detector 22. A deviation between the speed command 12a and a real speed 7a from a speed detector 7 is input to a speed controller 13 or 14. A switch 17 is connected with 17 at accelerating time so that a speed controller 13 for controlling the acceleration becomes valid. Simultaneously, switch 16 is connected with the 16a, and semiconductor switches 19a, 19b are conducted. When the secondary conductor 4 arrives substantially at the intermediate of the position detecting point D1, the switches 16, 17 are connected with the 16a, 17a, and the command 12a is simultaneously reduced. Thus, semiconductor switches 19c, 19d are conducted, and a deceleration controlling speed controller 14 becomes effective. |
