Mode Based Metal Strip Stabilizer
AssigneeABB Research Ltd.
InventorsPeter Lofgren, Mats Molander
Life of this patent
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Abstract
A method for vibration damping and shape control of a suspended metal strip during continuous transport in a processing facility in a steel rolling line or surface treating line in a steel mill, where the method comprises the steps: measuring distance to the strip by a plurality of non-contact sensors; and generating a strip profile from distance measurements; decomposing the strip profile to a combination of mode shapes; determining coefficients for the contribution from each mode shape to the total strip profile; and controlling the strip profile by a plurality of non-contact actuators based on a combination of mode shapes.
Claims26
A method for vibration damping and shape control of a suspended metal strip during continuous transport in a processing facility in a steel rolling line or surface treating line in a steel mill,
- comprising the steps of
- measuring distance to the strip by a plurality of non-contact sensors, and
- generating a strip profile from distance measurements
- decomposing the strip profile to a combination of mode shapes, and
- determining coefficients for the contribution from each mode shape to the total strip profile, and
- controlling the strip profile by a plurality of non-contact actuators based on a combination of mode shapes.
A system for vibration damping and/or shape control of a suspended metal strip during continuous transport in a processing facility in a steel rolling line or surface treating line in a steel mill, the system comprises;
- a plurality of non-contact sensors measuring distance to the metal strip vertical to strip surface,
- a plurality of non-contact actuators to stabilize said metal strip
- characterized in that
- said system comprises means for determining the strip profile and means for decomposing the determined strip profile into a combination of mode shapes and determining coefficients for the contribution from each mode shape to the total strip profile, and means for controlling the plurality of actuators based on the combination of mode shapes.
Dependencies are inferred from the claim text.