PID, APC

Courtesy: APC Performance LLC
Process Manufacturing October 31, 2020

Changes in store for advanced process control

In advanced process control (APC), closed-loop multivariable control brings the inherent benefits of greater timeliness and consistency, fewer alarms and constraint violations and more effective process optimization. Multivariable control is core to most process operations. See “What is ‘real-time’ optimization?”

By Allan Kern
Courtesy: Massachusetts Institute of Technology (MIT)
Robotics October 1, 2020

Control Engineering hot topics, September 2020

Control Engineering's most clicked articles in September 2020 included stories about the younger workforce leading manufacturing, programmable logic controllers, multivariable controls, wastewater treatment, robotics and COVID-19, and more. Miss something? You can catch up here.

By Keagan Gay
Courtesy: Yokogawa
AI and Machine Learning September 28, 2020

Artificial intelligence identifies process abnormality causes

When other methods fail, AI is a critical finding and solving tool

By Dr. Hiroaki Kanokogi
Courtesy: APC Performance LLC
Automation, Controls August 28, 2020

Feedforward: Not as popular as expected, again

Feedforward and feedback: Multivariable control, like single-loop control, can be accomplished primarily with feedback control and selective (not wholesale) use of feedforward.

By Allan Kern
Model-less multivariable control (XMC) automates the way operating teams have always carried out multivariable constraint control and optimization manually. Notably, this method does not require detailed models or embedded optimizers. XMC uses patented rate-predictive control (RPC) internally. Courtesy: APC Performance LLC
PID, APC August 11, 2020

Model-less multivariable control technology acquired

Lin and Associates, Inc. has agreed to acquire APC Performance LLC's model-less multivariable control (XMC) technology, which provides back-end control to distributed control systems and programmable controllers.

By Chris Vavra
Courtesy of: Courtesy: CFE Media and Technology
Safety June 2, 2020

Control Engineering hot topics, May 2020

Control Engineering's most clicked articles in May 2020 included stories about the impacts of COVID-19, 3D printed PPE, remote management, advanced controls, IoT, and more. Miss something? You can catch up here.

By Keagan Gay
Courtesy: Proctek SAS
PID, APC May 4, 2020

Advanced controls, linear programming, fuzzy logic

To obtain optimal disposition of water injection flow in oil production facilities, linear programming techniques and advanced control based on fuzzy logic were applied. Better control increased field production and allows more effective responses to deviations that can damage people, goods or reduce production.

By Juan David Medina Gonzalez, Silvia Marina Araujo Daza MSc, Hernan Ivan Cadena Celis
The red curve is the phase of the loop gain before adding a notch filter in the loop. The green curve is the phase of the notch filter being added to the loop (with center frequency of five rad/sec). The black curve is the resulting phase of plant loop gain, which is found by adding the phase at each frequency of the red and green curve. At four rad/sec, the phase of the red curve phase (-140 degrees) plus the green curve phase (-40 degrees) is -180 degrees, which is shown on the black curve. Courtesy: Aerotech
Process Manufacturing April 22, 2020

How to tune servo systems (Part 1): Questions and answers

Inside Machines: More answers regarding servo system tuning follow the March 11 webcast on the same topic.

By Joseph Profeta
Courtesy: Chris Vavra, CFE Media
Research April 13, 2020

Top 5 Control Engineering Articles April 6-12, 2020

Articles about COVID-19's impacts on engineers, manufacturers and electronic industry, and advanced process control were Control Engineering’s five most clicked articles from April 6-12, 2020. Miss something? You can catch up here.

By Keagan Gay
Courtesy: APC Performance LLC
Process Manufacturing April 4, 2020

Understanding multivariable control: The missing metric

Advanced process control: An improved understanding of the role of multivariable control in industrial process operations will lead to more cost-effective solutions and engage a wider circle of people in the process automation enterprise.

By Allan Kern