The angular coordinate method allows to simplify the multi-level operation of the compressor to a one-dimensional visualization of the safe operating zone, presenting it as a direct comparison of the process variable with the set value, which is the most common and convenient practice for plant operators monitoring processes in the DCS.
A PID-based control strategy can manage surge margin by using feedforward signals from flow, pressure, or compressor speed fluctuations.
Process automation hall-of-fame member Greg McMillan made his book about centrifugal and axial compressor control freely available for download in PDF form.
Only about 9% of the world’s plastic waste is recycled, according to the Organisation for Economic Co-operation and Development (OECD). Many post-consumer plastics are considered unrecyclable via traditional mechanical methods and end up in landfills, get incinerated,...
A fascinating ControlGlobal.com article compares performance between Smith predictor & deadtime-compensated PID in lag-dominant processes.
Emerson’s Jonas Berge has a library of LinkedIn articles that are well worth an automation professional’s time to visit and read. To give you a flavor, here are the titles of his five most recent articles: Automation Intensity – How to Elevate Your Plant’s Level...
Emerson’s Vicky Athanasiou presents Prevent LNG Tank Stratification and Rollover Events through Operator Training at the AspenTech Optimize 24 conference.
Greg McMillan and Peter Morgan’s recent ControlGlobal.com article is titled Deadtime compensation opportunities and realities. The article explains the benefits of implementing controller integral action by using filtered, positive feedback.
Download a freely available PDF file of Process Automation Hall of Fame member Greg McMillan’s book, Process Control Case Histories.
This week at the AIChE Spring Meeting, Process Automation Hall of Fame member Greg McMillan was awarded the best paper for his paper and presentation, Feedforward Control Methods and Benefits.
If you wonder how to move, from a simplistic and superficial view of the production process and start building the backbone of a proven methodology that can be replicable in time, adaptable to changes and at the same time make space for operational improvements, one...
The chemical industry is facing a unique challenge: a need for growth along with environmental regulations that each day are becoming stricter and more urgent. Limited resources, an aging workforce, aging equipment: achieving both efficiency and sustainability can...
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