August 2009

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HP Control: APC designs for minimum maintenance—Part 3

This is the third in a series of three editorials about designing advanced process control (APC) applications for an environment of little to no maintenance. Having lamented for years about APC applic..

Friedman, Y. Z., Petrocontrol

This is the third in a series of three editorials about designing advanced process control (APC) applications for an environment of little to no maintenance. Having lamented for years about APC applications failing due to lack of maintenance, we have to accept that a personnel shortage is here to stay. If we want our APC applications to survive in a minimum-maintenance environment we have to make them as robust as possible. My June editorial proposed design rule 1: Avoid cluttering the multivariable predictive controller (MVPC) control matrix. Associate each control variable (CV) with one, or a maximum of two manipulated variables (MVs). The July editorial continued with rule 2: Avoid near

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