Question

What is the function of controller in control system?

Answer 1

The proportional integral derivative controller is used to improve the stability of the control system and to decrease steady state error.

Answer 2

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A controller is a comparative device that receives an input signal from a measured process variable, compares this value with that of a predetermined control point value (set point), and determines the appropriate amount of output signal required by the final control element to provide corrective action within a ...