A feedback controller effectively calculates the amount of product that is required to be fed into the process. If, for example, the output (process demand - PD) of the controller is sitting at 50%, the ...
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Based on my experience in every one of the several hundred plants where I have performed optimisation, less than 5% of all loops in automatic operate at all effectively. ...
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Michael Brown is holding a series of his well-known courses on practical process control in Johannesburg. The courses are unique in the world and are invaluable to novices, as well as to experienced practitioners ...
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Over the many years that I have been writing these articles in the Case Histories series, the one theme that re-occurs very frequently is problems encountered with valves. In recent years I have been ...
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In the previous Case History article, published in the May 2004 issue, some of the control problems encountered on the first visit to optimise two reheat furnaces in a steel plant were described. Open ...
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Michael Brown is holding a series of his well-known courses on practical process control in Johannesburg and Richards Bay. Unique in the world, these courses are invaluable to novices and experienced ...
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A few months ago I was commissioned to optimise the controls of two large reheat furnaces in a steel manufacturing plant. The client was aware that furnaces were consuming gas at a rate that was very ...
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Michael Brown is holding a series of his well-known courses on practical process control during April in Johannesburg. The courses are unique in the world and are invaluable to novices, as well as to ...
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This article was recently published in a leading magazine serving the pulp and paper industry - however, I think many of the regular readers of my articles will find it interesting. Few people are aware ...
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One of the more difficult types of processes that I have been asked to optimise, is the level control of the mould in a continuous casting machine found in large steel manufacturing plants. A basic diagram ...
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I often feel that I am a lone voice 'crying in the wilderness' about the abysmal state of control in most plants worldwide. It really pleases me when I can produce supporting evidence from other people ...
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Michael Brown is holding a series of his well-known courses on practical process control in Johannesburg. The courses are unique in the world and are invaluable to novices, as well as to experienced practitioners ...
read more