In this article, as in industry, advanced process control (APC) refers primarily to multi-variable control. Multivariable control means adjusting multiple single-loop controllers in unison, to meet ...

Their presence still confounds the most experienced control system engineers. That is why single-loop control is still the mainstay of process control, and why those trends discussed earlier (or any ...

Fotosearch/Eriko Koga/Comstock/Getty Images; Dan WardSince FDA issued its report, Pharmaceutical Current Good Manufacturing Practices (CGMPs) for the 21st Century—A Risk-Based Approach (1), and its ...

Most of these controllers will work in discrete, process, and hybrid control applications to varying degrees, but what criteria should be used to choose the right controller for an application?