| 摘要 |
<p>PURPOSE:To stabilize traveling speed of a tape by detecting a tape tension at a tape coiling side and changing a tape tension set value at a tape supplying side based on the detecting value. CONSTITUTION:A CPU 1 inputs a speed error voltage corresponding to a travelling command speed to a coiling side reel motor driving amplifying circuit 5 and drives a motor T. Next, a coiling side tape tension setting voltage from the CPU 1 is inputted to a tape tension error generating circuit 9. The circuit 9 outputs a difference voltage E between the setting voltage and the voltage from a potentiometer 8 coupled to a tension arm 7. Next, the CPU 1 calculates a supplying side tape tension set value T based on a reference tape tension set value and E. The voltage data for setting T are inputted to a supplying side tape tension generating circuit 14, the torque of the supplying side reel motor is controlled so that the load torque of the coiling side reel motor can be constant and the traveling speed is stabilized.</p> |
