Integral (Reset) Control Theory
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
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How to Select the Right Type of Controller
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 ?
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