September 1998

Special Report: Process Control and Information Systems

LP integrates economics into dynamic matrix control

This popular algorithm becomes cost conscious

Cutler, C. R., Sorensen, R. C., Chevron Research & Technology Co.

R. C. SORENSEN, Chevron Research & Technology Co., Richmond, California, and C. R. CUTLER, Consultant, Houston, Texas       Comments? Write:editorial@HydrocarbonProcessing.com Embedding a linear program (LP) in dynamic matrix control (DMC) brings many powerful new features to the algorithm. The LP gives the controller stability by providing a feasible steady-state solution that satisfies all constraints. It also gives the controller a high degree of robustness; it gives the user the option of specifying that controlled variables be operated with setpoints or within a selected range; it permits nonsquare controllers; it handles integrating varia

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