Patent ID: 7454253
Filing Date: 2008-11-18
Classification: G05B

Abstract:
1. A method of fast approximating the performance of a cross-direction machine-direction multivariable model predictive controller (CDMD MPC) for a spatially-distributed sheet process that comprises the steps of: (a) identifying a process model for the spatially-distributed sheet process which is employed in a sheetmaking machine that forms a sheet of material and that comprises: (b) inputting tuning parameters and constraints into the CDMD MPC; (c) calculating steady-state spatial performance for the CDMD MPC for different sheet property modes that includes CD only mode, machine-direction (MD) only mode, and CD and MD mode; (d) calculating a dynamic performance for the CDMD MPC; (e) inputting optimal tuning parameters to the CDMD MPC; and (f) controlling the sheetmaking machine with the CDMD MPC.