Equipment for controlling tension stresses in wound band material - has drive controlled by cct activated by differential between driving and predetermined moment

摘要

Equipment for controlling tension stresses in which the driving moment of the drive on the roller shaft is either directly or indirectly measured and subsequently corrected inside a control circuit. In the transmission between the drive (12, 22) and the roller shaft (11) is mounted a moment-pendulum system (12a, 13, 23, 24, 25) which is subjected to the reaction moment of the drive (12, 22) and to a predetermined moment. The difference between the reaction moment and the predetermined moment is fed in a form of a differential signal to activating link of the control circuit. The pendulum system is a motor (12) with rotatable stator (12a) which is subjected to the predetermined moment in opposite direction to the action of the reaction moment.