Cutting – With means to monitor and control operation – Including means to correct the sensed operation
Patent
1998-03-20
2000-03-07
Rada, Rinaldi I.
Cutting
With means to monitor and control operation
Including means to correct the sensed operation
83342, 83575, 8369821, 101216, 384448, B23Q 1518, B23Q 1712
Patent
active
060325585
ABSTRACT:
A rotary knife incorporates the use of an electronically controlled, tuned mass active damping system to control vibrations of the knife cylinder. The system preferably uses one or more electromagnetic actuators to provide force on a tuned mass which is mechanically coupled to the knife cylinder. Vibration sensors, preferably accelerometers, are used to monitor vibrations of the respective knife cylinders and tuned masses. A digital signal processor implementing a state space control system controls the electromagnetic actuators to remove vibration energy from the system. An active damping system in accordance with the invention is more effective in removing vibration energy than passive systems, especially in heavy-duty applications.
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"The Direct Drive Cutoff Knife", Marquip brochure, D.D.C.O.--4 May 25, 1984, Marquip Inc., 1984.
Goodman Charles
Marquip Inc.
Rada Rinaldi I.
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