Use these loop tuning guidelines to improve process control and enhance product uniformity
Many undergraduate chemical engineering programs teach the Ziegler-Nichols tuning methods, developed by John G. Ziegler and Nathaniel B. Nichols in the 1940s. This tuning method has large controller gain and short integral time, and sometimes creates process oscillations, which are not good for most chemical engineering applications. As a result, many process control engineers revert to tune-by-feel techniques.
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