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Purple PV: PID Gain = 15 , Reset = 30 sec, Rate =1 sec

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Purple PV: PID Gain = 15 , Reset = 30 sec, Rate =1 sec - PowerPoint PPT Presentation


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Self-Regulating Process Near-Integrating Process Gain = 0.005 %/sec/% Dead Time = 10 sec, Secondary Lag = 1 sec. Purple PV: PID Gain = 15 , Reset = 30 sec, Rate =1 sec Green PV: PID Gain = 6 , Reset = 30 sec, Rate =1 sec Red PV: PID Gain = 3 , Reset = 30 sec, Rate =1 sec

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Presentation Transcript
slide1

Self-Regulating Process

Near-Integrating Process Gain = 0.005 %/sec/%

Dead Time = 10 sec, Secondary Lag = 1 sec

Purple PV: PID Gain = 15, Reset = 30 sec, Rate =1 sec

Green PV: PID Gain = 6, Reset = 30 sec, Rate =1 sec

Red PV: PID Gain = 3, Reset = 30 sec, Rate =1 sec

Brown PV: PID Gain = 1.5, Reset = 30 sec, Rate =1 sec

slide2

Integrating Process

True Integrating Process Gain = 0.005 %/sec/%

Dead Time = 10 sec, Secondary Lag = 1 sec

Purple PV: PID Gain = 15, Reset = 30 sec, Rate =1 sec

Green PV: PID Gain = 6, Reset = 30 sec, Rate =1 sec

Red PV: PID Gain = 3, Reset = 30 sec, Rate =1 sec

Brown PV: PID Gain = 1.5, Reset = 30 sec, Rate =1 sec

slide3

Runaway Process

Near-Integrating Process Gain = 0.005 %/sec/%

Dead Time = 10 sec, Secondary Lag = 1 sec

Purple PV: PID Gain = 15, Reset = 30 sec, Rate =1 sec

Green PV: PID Gain = 6, Reset = 30 sec, Rate =1 sec

Red PV: PID Gain = 3, Reset = 30 sec, Rate =1 sec

Brown PV: PID Gain = 1.5, Reset = 30 sec, Rate =1 sec

slide4

To prevent the start of oscillations:

To prevent large slow oscillations:

Lambda Integrating Process Tuning (lambda = dead time)

For Test Cases:

Kc= controller gain (dimensionless)

Ki= integrating process gain (%/sec/% or 1/sec)

Ti= integral (reset) time setting (sec/repeat or sec)

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