Tag Archives: closed loop

Control Strategy

TEA FOR TWO    Two young Chinese ladies, performing for passers-by, hold the handles of their teapots two arm-lengths away from teacups and unerringly fill them without spilling a drop.  The crowd is amazed.  How did they do this?  How could they control the tea so well as it was being poured? Answer:  by using a control strategy that is at the root of controlling nearly all processes. Look at the ladies’ eyes in the photo.  They’re not looking at the spout from which the tea is being poured.  Actually, they’re not even looking at the rim of the cup … Continue reading

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