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Integral (Reset) Control Theory

S Bharadwaj Reddy
Imagine a liquid-level control system for a vessel, where the position of a level-sensing float sets the position of a potentiometer, which then sets the speed of a motor-actuated control

How to Select the Right Type of Controller

S Bharadwaj Reddy
Distinguishing Characteristics  P-only Accelerates the response of controlled process Produces offset except for integrating (1/s) processes PI Eliminates offset Usually higher maximum deviations than P-only Sluggish, long oscillating responses Increased

How Integral Controller Reduces offset error ?

S Bharadwaj Reddy
First we have to know how offset error appears in Proportional controller. Click here to read the article on proportional controller offset error. Automatic reset or integral action corrects for

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