Control loop case history 121: Boiler drum level control: Part 1 - controlling swell and shrink October 2011, Michael Brown Control Engineering, System Integration & Control Systems Design Further to my requests in this magazine for people to contribute control experiences of their own to these Case History articles, I am very pleased to introduce this two-part article by Etienne Wannenburg ...
Read more...Control loop case history 120 - Control loop optimisation: theory versus practice September 2011, Michael Brown Control Engineering, System Integration & Control Systems Design Virtually all feedback control courses worldwide are presented theoretically. This is understandable, feedback control theory was largely developed back in the early 1900s by some of the world’s leading ...
Read more...Control loop case history 119 - Tricky temperature control problems July 2011, Michael Brown Control Engineering, System Integration & Control Systems Design The problem
I was recently commissioned to investigate a heating problem by a client who tests ore samples by heating them to various temperatures. The heating rate is defined by either step changes ...
Read more...Control loop case history 118: ‘Naughty’ valves that cause cycling in automatic May 2011, Michael Brown Control Engineering, System Integration & Control Systems Design The elements of a control loop normally consist of the process itself, the measuring transmitter, the controller and the final control element. The latter, in the vast majority of loops, consists of an ...
Read more...Control loop case history 117 March 2011, Michael Brown Control Engineering, System Integration & Control Systems Design I was recently performing some optimisation at a large chemical plant and was reminded that during the daily hustle and bustle and general high pressure of an instrument and control practitioner, one ...
Read more...Control loop history 116 January 2011, Michael Brown Control Engineering, System Integration & Control Systems Design Poor control loop strategy: minimum flow control.
The universal, almost complete lack of knowledge of practical control never ceases to astound me. Very few people have any understanding of the basic ...
Read more...Control loop case history 115 November 2010, Michael Brown Control Engineering, System Integration & Control Systems Design Frequency analysis: auto and cross correlation. Introduction by Michael Brown
I recently spent two days with Dave Ender of Techmation in Phoenix, Arizona. It was an arduous trip taking approximately ...
Read more...Control loop case history 114 September 2010, Michael Brown Control Engineering, System Integration & Control Systems Design Protuner tuning in practice
Case History 113, published two months ago described the theory behind the Protuner tuning methodology. But how well does it work in real life? This article describes just ...
Read more...Control loop case history 113 July 2010, Michael Brown Control Engineering, System Integration & Control Systems Design Protuner tuning methodology revealed. Introduction by Michael Brown
Techmation has never previously published details of its patented Protuner tuning technology, which as far as I am aware is completely ...
Read more...Control loop case history 112 June 2010, Michael Brown Control Engineering, System Integration & Control Systems Design Tuning Part 1 – The myth: ‘Tuning can solve all problems’
Basic principles and methodology of tuning were covered in Part 1 of the Loop Signature Series (available on CD for persons outside southern ...
Read more...Control loop case history 111 April 2010, Michael Brown Control Engineering, System Integration & Control Systems Design Surge level control.
Recently a delegate on one of my courses who works in control on mining mineral processing plants related to me that he was doing some work on a mill sump level control and had found ...
Read more...Control loop case history 110 February 2010, Michael Brown Control Engineering, System Integration & Control Systems Design Incorrect perceptions result in poor control.
There is no doubt that one of the main reasons why the vast majority of regulatory control loops perform so badly is a general lack of understanding of the ...
Read more...Control loop questions answered June 2005, Valves, Actuators & Pump Control Michael Brown answers your control loop questions
I like to read your column on process control in loop signature series, because I think it is suitable for practitioners without leaving behind the theoretical ...
Read more...Problems in a Canadian plant April 2005, Michael Brown Control Engineering, Valves, Actuators & Pump Control Case History 82
People often ask me if I find the same sort of problems in plants in countries other than Africa. My reply to this is that in every plant, in every country that I have visited, there ...
