ADVANCED CROSS-DIRECTIONAL CONTROL

Improved cross-directional (CD) control of paper machines can result i n significant reductions in material consumption, greater production r ates for existing equipment, improved product quality, and elimination of product rejects. Addressing all of the important characteristics o f CD control within the computational constraints is a challenging pro blem. A cross-directional control algorithm is developed which directl y addresses actuator limitations in an efficient manner while having a controller structure proven to be robust to model inaccuracies.