PI Controllers SELECT THE CORRECT ANSWER A can eliminate con

PI Controllers: (SELECT THE CORRECT ANSWER)

A) can eliminate constant disturbances from the output but they cannot increase the Bandwidth of the loop.

B) can eliminate constant disturbances from the output and always increase the Bandwidth of the loop.

C) cannot eliminate constant input disturbances from the output but they increase the Bandwidth of the loop.

D) can eliminate constant disturbances from the output and always decrease the Bandwidth of the loop: INCORRECT

E) None of the Above

Please Explain.

Solution

option B is correct

because the proportional term is for present values of the error and due to this control teh output and also it is large and positive and the integral term continually sums the error and it accumulates the influences.