Classification of feedback control systems by control action, Electrical Engineering

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Classification of Feedback Control Systems by Control Action

A more common means of describing industrial and process controllers is by the way in which the error signal E(s) is used in the forward loop of Figure. The basic control elements are

• A proportional device, such as an amplifier

• A differentiating device, such as an inductor

• An integrating device, such as an operational amplifier with feedback.

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