Evaluation indicators for PID parameter tuning
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After adjusting the PID parameters of a control loop, how is the quality of these adjustments evaluated? Should it be measured by the magnitude of the error or by the speed of response?
Maximum deviation, transition time, oscillation frequency, residual error.
Traditional control quality metrics are measured using attenuation curves, with a 4:1 attenuation curve considered the optimal control. Now, the DCS control requirements are different.
The key factors are the attenuation ratio, the magnitude of the residual error, and the frequency of oscillation.
It’s fine as long as it can be basically controlled; many of these regulations have no practical meaning