Posts Tagged ‘PID control’

Contrasting Advance Regulatory and Advanced Process Control

Posted in Education on Monday, March 30th, 2015. No comments yet
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I wanted to bring additional visibility to a great thread in the LinkedIn Process Control group on advanced regulatory control versus advanced process control. The post, So, ARC Can “Replace” APC? is based on a blog post, Advanced regulatory versus model-predictive control. The LinkedIn post’s author draws two points from the blog post: ARC is […]

PID Control in 3-Phase Oil and Gas Separation

Posted in Oil & Gas on Tuesday, January 27th, 2015. One comment so far
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The PID controller entry in Wikipedia highlights the beginning of proportional+integral+derivative control going all the way back to the 19th century: PID controllers date to 1890s governor design.[2][3] PID controllers were subsequently developed in automatic ship steering. One of the earliest examples of a PID-type controller was developed by Elmer Sperry in 1911,[4] while the […]

Methodology for Solving Control Loop Problems

Posted in Control Strategies, Oil & Gas, Process Optimization, Variability Management on Friday, October 31st, 2014. One comment so far
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This time of year, after our big Emerson Exchange conference, I like to go back and see what sessions I missed to be able to be able to recap for you. I caught up with Emerson’s Mark Coughran, whom you may recall from many control performance-related posts. He co-presented a paper, Solve Control Loop Problems […]

Regulatory and Model Predictive Control Difference?

Posted in Process Optimization on Friday, September 12th, 2014. One comment so far
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Over in LinkedIn’s Process Control group, a question was asked: What is the difference between regulatory and model predictive control. Is it possible that MPC work as stand alone without regulatory control? Emerson’s Chowyang Neo offered: Regulatory Control generally refers to good old PID loop control. Gaps between the SP and PV known as errors […]

Setpoint Lead-Lag Question and Answer

Posted in Education, Process Optimization on Monday, March 24th, 2014. No comments yet
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I wanted to share this question and answer on setpoint lead-lag, from the Mentoring Engineers discussion group in the Emerson Exchange 365 community. The question: …one of the options you recommend for eliminating overshoot at setpoint changes is using a setpoint lead-lag setup. I cannot visualize the concept in my mind. In a Two Degrees […]