Evaluation System checks control loop performance.

Press Release Summary:




Control Loop Performance Evaluation provides before and after analysis using bar graphs for comparison. Bars compare simulated control loops using current PID settings compared to new what-if PID settings. Performance bars show performance relative to optimal, with 100% being optimal. Robustness bars show how far away loop is from being unstable. Loop's PV filter is included in analysis, and valve travel and reversals are compared for current and new.



Original Press Release:



Optimizing control loops is a tradeoff between loop performance, robustness and valve wear. Now the ExperTune Control Loop Performance Evaluation lets you explore and analyze these tradeoffs in one glance.



Optimizing control loops is a tradeoff between loop performance, robustness and valve wear. Now the ExperTune Control Loop Performance Evaluation lets you explore and analyze these tradeoffs in one glance.

The Performance Evaluation is a before and after analysis using bar graphs for easy comparison. The bars compare simulated industrial control loops using your current PID settings compared to new "what-if" PID settings. The loop's PV filter is also included in the analysis. In the performance and robustness section, higher bars are better. In the valve duty section, lower bars are better.

For both current and new settings, the performance bars show performance relative to optimal, with 100% being optimal. The robustness bars show how far away the loop is from being unstable. The higher, the better.

In the valve duty section, valve travel and reversals are compared for both current and new. Valve travel is the total distance the valve moves in a normally operating control loop with noise. The lower the bars, the better, since less distance would be traveled by the valve. Valve reversals are the number of times the valve changes direction. The less the valve changes direction, the less maintenance it will need. So again, a lower bar is better.

ExperTune's full suite of optimization tools makes it easy to increase the efficiency of your process. Use ExperTune software to analyze and tune PID loops in any industrial controller. ExperTune includes powerful simulation, modeling, robustness, linearization, valve wear analysis, pH linearizer, time series analysis, multivariable, statistical, frequency response, and loop tuning tools. ExperTune's PlantTriage software assures your entire plant is running at peak performance. PlantTriage monitors, assesses and optimizes the performance of each loop in the plant.

For information contact: Glenn Lovensheimer ExperTune Inc. 4734 Sonseeahray Hubertus, WI 53033 www.expertune.com sales@expertune.com phone: 262-628-0088

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