P. B. Deshpande

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The recently developed Q-PI approach for quality control of linear continuous systems is extended to non-linear batch systems. The new control law contains proportional and integral terms with which the operators are intimately familiar. It is shown that control quality may be improved or costs reduced, consistent with the process specifications, by(More)
A simple and effective multivariable digital control algorithm has been derived from open-loop responses. The algorithm inherently compensates for process dead-time and interactions. Process modeling is not required and the order of the process is not at all important. Inverse response behavior poses no special problems for the algorithm although an(More)
This paper presents the RGA analysis for a high purity, industrial distillation column. The column was modeled using a commercial computer package for distillation design. The effects of reducing the size of the perturbations on the relative gain array are presented. The results of the RGA analysis indicate degeneracy, suggesting that single composition(More)
Brantley, et al (1982) recently presented an on-line procedure for identification of overdamped second order plus deadtime processes. In this paper we compare the advantages and disadvantages of their method with an on-line procedure which uses the Luus-Jaakola (LJ) Optimization technique (1973, 1981). The comparison is made in terms of ease of programming,(More)
Over the past three decades numerous terms borrowed from psychology and biology such as adaptation, learning, pattem recognition, and self organization have been introduced into the systems literature. We have come to realize that these terms are necessarily imprecise and the ideas they are intended to connote cannot be compressed into simple statements(More)
Design and implementation of effective control systems is vital to the competitiveness of the process industry. Process control system design requires knowledge based systems which are capable of efficient numeric computing along with the symbolic reasoning. A brief survey presented in this paper shows that many industrial and academic research groups, are(More)
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