| 摘要 |
<p>PURPOSE:To obtain a constant control band and loop gain, and to obtain a stable and satisfactory control characteristic by providing a means which controls the gain of a feedback system by a signal inputted to a torque adding means. CONSTITUTION:The torque of a winding reel 103 is applied to an arrow direction by a motor or the like, and a supplying reel 102 is multiplied by the torque by a motor 119. Then, it is detected by a tension sensor 120. Then, an output terminal 5 of a whole sensor 113 is multiplied by the torque. Then, a signal almost in proportion to a tension value is outputted to the output terminal 5 of the whole sensor 113, and the motor 119 of the supplying reel 102 is driven. At that time, the direct current components of a driving signal impressed to the motor 119 of the supplying reel 102, are in proportion to the tape winding radius of the supplying reel 102. Then, the fluctuation of a tension outputting coefficient corresponding to the input voltage of the motor 119 can be canceled by changing the detecting sensitivity of the whole sensor 113.</p> |
