pH control can be extremely challenging due to exceptional nonlinearity and sensitivity particularly when strong acids and strong bases are used. Advances in electrode design and signal selection can greatly help. The need to reduce oscillations from valve resolution limit and backlash can be addressed by valve design and use of a PID feature.
Greg McMillan
Breakthroughs in Bioprocess Modeling and Control
Emerson’s Greg McMillan, teaming with Christopher Stuart, Rehman Fazeem, Zachary Sample and Timothy Schieffer have updated and revised the 2nd edition of the book, New Directions in Bioprocess Modeling and Control.
Improving Control Valve Response Specifications
Control valve response is a critical factor in successful control strategies and process variability. In a ControlGlobal.com article, Responsible control valve response, Emerson’s Greg McMillan and James Beall discussed the efforts underway to include valve responsiveness into the ISA 75.25 Control Valve Dynamic Testing standard.
Control Strategies for Process Dynamic Responses
Greg McMillan’s presentation, Process Effects on Control explores how various process types affect objectives, tuning, and performance. Greg opened noting that control loops have many different objectives.
Digital Twin Technology for Bioreactor Control and Optimization
At Texas A&M University’s Mary Kay O’Connor Process Safety Center’s 76th Instrumentation and Automation Symposium, Emerson’s Greg McMillan presented on Bioreactor Control and Optimization using Digital Twin technology.
Busque oportunidades perdidas en control de procesos
El mejor control de procesos en términos de habilidad para mejorar la eficiencia operacional y la capacidad, requiere un entendimiento de las relaciones del proceso y su efecto en las condiciones de operación establecidas por el sistema de automatización.
Advancing the Automation Engineering Profession
Greg McMillan presented at the AIChE Spring Meeting on the current state of automation engineering professionals and recommended solutions for advancing the profession.
Process Control Educational Recordings
One decade ago I collaborated with Process Automation Hall of Fame member, Greg McMillan to do a series of webinars on basics of process control.
Fundamentals of Temperature and Pressure Management
A great source for fundamentals in process automation is the International Society of Automation (ISA)'s InTech Focus electronic periodical. This series of electronic magazines: …focuses on the fundamentals of essential automation components, such as instrumentation,...
Modeling and Controlling Compressor Surge
Some of the most perennially popular posts (say that fast 10 times!) here on the blog involve axial or centrifugal compressor surge control, or better stated—anti-surge control. In a paper presented at this year's AIChE Spring Meeting, Emerson's Greg McMillan—a member...
Knowledge Sharing with ISA Mentor Program
I'm lucky enough to be on the email distribution list for the ISA Mentor Program where automation hall of fame legend, Greg McMillan, shares some of the work he continues to offer well into his golden years. Greg and Hunter Vegas started this program in 2011 with the...
Developing Next-Gen Process Control Leaders
Anyone involved in process control knows the steep learning curve from what is taught in the universities to what is required to safely, reliably and efficiently control an industrial process. Many of the world's foremost experts steeped in this knowledge have retired...
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