So asks Emerson's Lou Heavner in a thought-provoking post in the DeltaV track of the Emerson Exchange 365 community. Lou opens: Is it good enough? Is it too good? Do you even know? Should you care?Well yes, you probably should care. Most level processes are...
Having trouble with an oscillating integrating process? Have too much variability in a self-regulated process? Need a refresher about the essentials of Lambda (λ) tuning? Then check out James Beall's workshop at the Jan. 21–23 Texas A&M University 2014...
Last year, some controversy broke out in the process automation and control community about the use of Lambda tuning for proportional-integral-derivative (PID)-based control. In a post, Lambda Tuning-Yeah or Neah?, we offered a differing view to a Control magazine...
The subject of process dynamics can get quite involved and cause many to shy away from it. Emerson's Felipe Fakir, a systems engineer based in Brazil, has written a whitepaper, Process Characterization, to make the topic more approachable—at least in how to identify...
Earlier this week, I highlighted a presentation by Emerson's James Beall, Fundamentals of Modern Loop Tuning. I shared his approach for tuning self-regulating loops and the sequence to tune interacting loops. Today, I'll share some guidance from the portion of the...
I've highlighted a few Emerson presentations for this week's ChemInnovations conference in New Orleans. Emerson's James Beall, a 30-year veteran in process control and chairman of the ISA 75.25 committee on control valve performance testing, shared his ChemInnovations...
I saw a recent ControlGlobal.com article by process control legend, Greg Shinskey, The Case Against Lambda Tuning. He writes: In recent years, this practice of emulating model-based response using PID controllers has been simplified with the introduction of "Lambda"...
Chemical Processing magazine has a great article, Be Levelheaded About Surge-Tank Control. I shared it with Emerson's James Beall asking for his thoughts. He noted that surge tank level control is a common application in many of the process industries. Often a surge...
I discovered Nick Denbow's Industrial Automation Insider blog this weekend and added it to my list of automation and process industries-related blogs. He had a post about university students studying the feasibility of using liquefied natural gas (LNG) as a fuel...
ModelingAndControl.com's Greg McMillan is resuming his demo/seminar (a.k.a. deminar) series tomorrow, August 11, 2010. The subject will be reducing batch cycle time and startup time for true integrating processes through improved PID control. The deminar will begin at...
Recent ISA Life Achievement Award honoree Greg McMillan will present his next live demo/seminar (a.k.a. deminar) tomorrow, June 23, 2010 at 10am CDT / 13:00 UTC. He shares his experience in PID Tuning for Near-Integrating Processes. If you haven't seen any of Greg's...
Imagine that your power plant is about to have a scheduled outage. As the unit is ramped down and feed water control is taken over by the by-pass valves, you discover that the control valves refuse to close upon receiving orders from the level control system to do so....
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The opinions expressed here are the personal opinions of the authors. Content published here is not read or approved by Emerson before it is posted and does not necessarily represent the views and opinions of Emerson.