Monthly Archive: April 2008

Apr
28

Common Control Myths – Old and Unimproved

I dug up the following myths from my April 2006 Control Talk column in Control Magazine. I am into recycling and going green. In fact these myths may be a bit moldy. (26) Auto tuners can compute controller tuning settings with an accuracy of more than one significant figure. Act surprised when unmeasured disturbances, load …

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Apr
15

Common Control Myths – Part 6

We conclude with the following myths from Appendix D in my guide Models Unleashed – Virtual Plant and Model Predictive Control Applications published by ISA, 2004. (21) You need an advanced degree to do advanced control. Not so anymore. New software packages used to form a virtual plant automate much of the expertise needed and …

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Apr
05

Common Control Myths – Part 5

To blog or not to blog, that is the question. When on vacation, I choose not to. Now I am back and ready to blog on. Here are some myths from my days (and nights) at Monsanto improving pH loops. (16) More frequent buffer calibrations improve pH measurement accuracy – unless an electrode needs to …

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