Patent ID: 9095886
Filing Date: 2015-08-04
Classification: B21B,G06F

Abstract:
1. A mill control system for metal strip rolling controlled in response to a sequence of controller scans, the system comprising: a sensor suite coupled to sense a plurality of parameters regarding the strip rolling; a model responsive to the sensed parameters and configured to estimate per scan at least one matrix based on the sensed parameters and indicative of state conditions of the strip rolling; and a controller comprising an inner control loop to effect a control law to generate a control vector per the scan, the inner control loop configured to have dynamic characteristics, which remain substantially the same for each scan of the controller, wherein the dynamic characteristics of the inner control loop are effective to determine a pointwise on-line control solution based on the at least one matrix indicative of the state conditions of the strip rolling, without having to compute a Riccati control solution per the scan wherein said dynamic characteristics of the inner control loop are established by keeping a matrix difference (A