Abstract
This paper proposes a novel approach for cross-directional (CD) modeling and control of a paper machine based on discrete wavelet transforms. CD basis weight variations and the spatial shape of the slice lip are approximated at various resolutions, respectively. A new response model describing the relationship between the settings of the slice-screws to the basis weight profile is established in the discrete wavelet transform domain. Simulation results show that the size of the optimization and control problem associated with large dimensions can be significantly reduced.
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