Find plant-performance impacts of cyclic upsets
PlantTriage's new "oscillation significance" (OS) capability identifies cycling problems in a plant, and ranks them according to importance. Oscillatory upsets cause energy losses, lower product quality, and reduced equipment life. OS reportedly combines statistical and frequency-domain information to calculate a single, meaningful measure of significance for each process parameter. Drill-down reporting ranks every process parameter in the plant by OS.
Oscillation detection analyzes every process variable in a system, looking for patterns of cyclical behavior. It then identifies the source of oscillation to be valve problems, tuning, or load disturbances. OS further refines these assessments by using a combination of loop variability, oscillation detection, and percent of power by frequency. The resulting measure of oscillation detection can be ranked directly, or in combination with economic criteria. A list of process parameters ranked by OS is then displayed in a drill-down report.
—Richard Phelps, senior editor, Control Engineering,