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AssigneeHoneywell International Inc.
InventorsArchana Menon, Dattaraj Bhat, Shailendra Kumar Gupta
Estimating the term…
Control system for cold rolling mills to improve sheet metal thickness uniformity. Sensors monitor the state of the cold rolling mill by measuring (i) roll eccentricity, (ii) roll slips during mill operation, (iii) mill disturbances from roll speed or roll force manifestations, and (iv) unknown disturbances referred to as process noise. The controller analyzes data from sensors to compensate. Data collected during the mill operation by the sensors are delayed in reaching the controller. This communication delay is accounted for by using a filter. Since an objective of the controller software is dynamic identification of eccentricity of the back up rolls, which is non-linear by nature, an Extended Kalman Filter may be used.
A controller for controlling thickness of sheet metal in a mill exiting a roll stand comprising a first work roll and a second work roll respectively positioned between a first back up roll and a second back up roll, the controller comprising a processor and code stored on media readable by the processor to control the thickness of the sheet metal, the controller comprising:
A method of programming a controller for controlling thickness of sheet metal produced by a roll stand, the method comprising:
A controller for controlling thickness of sheet metal exiting a roll stand having a first work roll and a second work roll comprising:
Dependencies are inferred from the claim text.