| 摘要 |
<p>PURPOSE:To carry a tape at an excellent speed and a stable tension by making the output of a tape carrying means for a tape running command into an ideal condition obtained in an arithmetic part, and making equal the tape sending quantities of two capstans. CONSTITUTION:A model arithmetic part 105 operates an ideal value (b) of the speed output of a motor 101b for a tape running command (a), it is compared with an output (c) of a speed sensor 101d, and an error (d) is outputted. In addition, a signal (e) obtained by amplifying the command (a) according to the signal (d) by means of an amplifying means 107 is compared with the signal (c), and a signal (f) is outputted. Consequently, a capstan 101a runs at a shifting speed according to the command (a). Next, an amplifying means 109 amplifies the command (a) according to the signal of a tension sensor 103g, outputs a signal (h), compares it with a speed signal (i) of a motor 102b, and rotates a capstan 102a at the speed corresponding to the command (a). Thus, the tape can be stably carried at the excellent speed.</p> |
