CLOSED LOOP PI/PID CONTROLLER TUNING METHOD FOR STABLE AND INTEGRATING PROCESS WITH TIME DELAY
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Nov 12, 2015
app pub date -
May 8, 2014
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May 8, 2014
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Abstract
A new online controller tuning method in closed-loop mode improves over the Ziegler-Nichols continuous cycling method. The method is a closed-loop setpoint step experiment PI/PID controller tuning method, which uses a P-controller with a gain Kc0, runs a setpoint experiment, and obtains a plurality of PI/PID-controller settings directly from three data from the setpoint experiment, wherein the three data are overshoot (Δyp−Δy∞)/Δy∞), time to reach overshoot or first peak tp, and relative steady state output change b=Δy∞/Δys, wherein Δys is a setpoint change, Δy∞ is a steady-state output change after setpoint step test, and Δyp is a peak output change at time tp.
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