| 摘要 |
<p>PURPOSE:To electrically compensate the braking torque, and to prevent generation of breadth shortage in the strip and of the necking, by computing the inertial energy from the rotational speed of the mandrel, and by correcting the previously set pattern. CONSTITUTION:The detected values of the speed detectors 5, 10, are input to the relay amplifier 111, and the line's synchronous speed vF is compared with the mandrel speed vM; then, if the relation vM>betavF (in which, beta is a value patterned according to the rolling schedule, and means the catch-up condition of the speed, and has a value of 1 or larger) is satisfied, the relay 109 is excited. The compensating circuit works from the beginning of winding of the strip 2 around the mandrel, however, the mandrel speed slows down at this stage, the relay 104 is put ON, the relay 107 is put OFF, and the integrator 105 works to produce the time signal. Hereupon, the relay 109 is being put ON according to the satisfaction of the relation vM>betavF, and the compensation at winding the strip is carried out by the output of the multiplier 108.</p> |
