Cross-machine direction (CD) response modeling with two-dimensional sheet variation measurements

The performance of cross-machine direction (CD) control applications for sheet-forming processes highly depends on the accuracy of models that characterize the responses of all CD actuators. This paper describes a new method to identify CD actuator responses by utilizing two-dimensional sheet variation measurements. The new modeling method not only reduces the required testing duration and product deviations, it also identifies individual two-dimensional responses for all CD actuators simultaneously.