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Hello,
We are controlling the negative pressure inside a vessel by controlling a valve in suction line. I am trying to adjust the PID loop and was having too much oscillation. Anyhow it has improved now. But finally I am getting around +/-14% towards positive/negative side from the set point And the time of one oscillation is around 18 to 20 sec. My gain is at .4 and integral is 5.2 sec.
Is it possible to improve it more? Please help me fine tune it.
We are controlling the negative pressure inside a vessel by controlling a valve in suction line. I am trying to adjust the PID loop and was having too much oscillation. Anyhow it has improved now. But finally I am getting around +/-14% towards positive/negative side from the set point And the time of one oscillation is around 18 to 20 sec. My gain is at .4 and integral is 5.2 sec.
Is it possible to improve it more? Please help me fine tune it.