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.
Use of Secondary Input for Process Control—An Application to a Digester Pulping Process
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Goh, T. N., and Wu, S. M. (March 1, 1978). "Use of Secondary Input for Process Control—An Application to a Digester Pulping Process." ASME. J. Dyn. Sys., Meas., Control. March 1978; 100(1): 88–91. https://doi.org/10.1115/1.3426345
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