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Ideally, the valve should settle into a single position once setpoint is reached. A hunting valve over-controls, or goes too far, then reverses in an attempt to the correct overshoot, but goes too far, reverses direction again, and constantly repeats this cycle.
A hunting valve results in poor control, and prematurely wears out the valve's mechanical parts.
Hunting is usually indicative of loop gain too high (PID gain + process gain), or a valve that is oversized for the intended flow, or noisy input signal, or a PID integral term too small.
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What is a TIW valve used for in the oil field?
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What year did ACF Industries acquire WKM Valve company?
1954
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oversize for its use
How you CAN remove hunting problem of process control valve?
use a PID controller
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Why did the early Americans keep migrating southward?
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What is the longest accurate shot with a rifle that's Not a Kill?
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If mitral valve does not close properly which circulation is affected?
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Did women in the middle ages go hunting?
Most women did not hunt during the Middle Ages, but some did. We have artwork showing medieval women who were members of the nobility and royalty hunting. In general when women hunted, they were hawking, which meant that they were hunting birds, but having their hawks catch and kill the birds for them.
