Patent ID: 6387214
Filing Date: 2002-05-14
Classification: D21G,F16F

Abstract:
An apparatus for actively reducing vibration in a first rotating roll, the first rotating roll being utilized in a machine, the machine including a second rotating roll, a nip defined between the first rotating roll and the second rotating roll through which a material web travels, the first rotating roll having a first axis of rotation and the second rotating roll having a second axis of rotation, said apparatus comprising:at least one sensor disposed in a plane common to the first axis of rotation and the second axis of rotation, said at least one sensor configured for detecting the vibration of the first rotating roll and providing at least one sensor signal indicative of the detected vibration; and at least one power unit receiving said at least one sensor signal and being configured to influence the first rotating roll dependent upon said at least one sensor signal, said power unit thereby reducing the vibration of the first rotating roll.