Implement an Effective Loop Tuning Strategy


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.

Author Bios: 

Timothy Olsen

Tim Olsen has been with Emerson Process Management for 17 years, and 25 years in the refining business. He is a refining consultant within the global refining industry solutions group where he supports Emerson’s technical and business strategy. 

Tim is a Past Division Chair for the AIChE Fuels & Petrochemicals Division and the Meeting Program Chair for the 2014 AIChE Spring Meeting in New Orleans.

He has a B.S. in chemical engineering from Iowa State University with emphasis in industrial engineering and process control, and an MBA from the University of...Read more

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