RESEARCH PAPERS: Additional Technical Papers

Use of Secondary Input for Process Control—An Application to a Digester Pulping Process

[+] Author and Article Information
T. N. Goh, S. M. Wu

Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, Wis.

J. Dyn. Sys., Meas., Control 100(1), 88-91 (Mar 01, 1978) (4 pages) doi:10.1115/1.3426345 History: Received November 04, 1977; Online July 13, 2010


Normal operating record data of a continuous digester pulping process are used to study the possibilities of improving process regulator control with stochastic discrete time series techniques. It is illustrated that inclusion of a secondary input that is uncorrelated with the main input in a univariate process model enables more efficient forecasting of disturbances to be made, resulting in better control for minimum mean squared output. The resulting control scheme is a form of feedforward control which calls for adjustments in only one main process input.

Copyright © 1978 by ASME
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