Case History 191: The weakest link. March 2024, Michael Brown Control Engineering, Valves, Actuators & Pump Control Which is the weakest link in a control loop? The answer, without any doubt is that, in most cases, the final control element is the weakest link.
Read more...Loop signatures 19: Noise – nuisance or enemy? August 2023, Michael Brown Control Engineering, Editor's Choice, Fieldbus & Industrial Networking This Loop Signature series of articles would not be complete without sections on the problems of noise and filtering, which are two of the most misunderstood areas in process control.
Read more...Control loop: Case History 180 - Fuel gas pressure control problem November 2021, Michael Brown Control Engineering, Editor's Choice The problem with the pressure control was that it seemed to work intermittently and seldom got to setpoint, resulting in large and unacceptable variance on the control.
Read more...Control loop: Case History 179 - Some unusual measurement and control problems September 2021, Michael Brown Control Engineering, Editor's Choice The example given in this article illustrates some mistakes made by the system integrators and control engineers at a metals extraction plant that used a well-known make of PLC and scada for its controls.
Read more...Loop Signatures 1: Introduction to the Loop Problem Signatures series May 2020, Michael Brown Control Engineering, Editor's Choice Over the years I have had many requests to write a book giving more detailed explanations of some of the problems I have encountered in my work on practical loop optimisation. I am by nature and inclination ...
