Abstract
AbstractA study of the application of the calculation and implementation of an open loop optimal changeover policy for a multivariable system on a minicomputer has been made. If the required changeover time and control time interval have been specified, a switching policy for the controls may be calculated using standard linear programming techniques. The multivariable system was an analog computer simulation of a liquid‐liquid extraction column.By repeated use of the procedure with different overall changeover times, a “best” changeover policy could be determined. The criterion for this policy was a minimum changeover time with the restriction that the sum of squared errors between the required and actual final states was less than a specified small value. Practical as opposed to theoretical small values of this error criterion were used.
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