Cross-directional closed loop control

Honeywell recently announced the release of IntelliMap version 3 for top-to-bottom tuning of cross directional (CD) paper machine control parameters using Da Vinci Quality Control Systems.

By Control Engineering Staff February 1, 2002

Phoenix, AZ – Honeywell recently announced the release of IntelliMap version 3 for top-to-bottom tuning of cross directional (CD) paper machine control parameters using Da Vinci Quality Control Systems. IntelliMap uses neural network technology to determine the shape of the process response as well as distinguishing between process response and noise. IntelliMap automatically performs pre-determined process bump tests to calculate mapping and tuning parameters and determines and displays the true cutoff wavelength and period of the actuator’s performance limitations. During tuning, a prediction of the closed-loop performance response is displayed so operators are aware of expected performance prior to transferring tuning parameters to the CD controller. A single display slider allows operators to apply more or less aggressive control. IntelliMap is said to be capable of handling non-linear shrinkage, a significant control problem with wide paper machines. IntelliMap also adds two-dimensional loop shaping to provide automatic determination of the optimum settings for stable, responsive CD control.

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