April 2001


Process controller performance assessment

Several recently developed techniques make the task easier

Hugo, A., Control Arts Inc.

While final product quality is of paramount concern, a more particular concern to control engineers is the quality or performance of their controllers. There are two primary reasons for measuring controller performance: first, to ensure that controllers do not degrade to the point where they jeopardize final product quality; and second, to determine whether advanced control is required (or to determine if the benefits of advanced control have been realized). Recent theoretical developments in controller performance techniques, and subsequent incorporation of these algorithms into commercial software packages, enable control engineers to easily and accurately obtain controller quality metri

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