Assertion (A): A derivative controller produces a control action for constant error only.Reason (R): The PD controller increases the damping and reduces the peak overshoot.(a) Both assertion and reason are true and R is correct explanation of A(b) Both A and R true but R is not correct explanation of A(c) A is true but R is false(d) A is False but R is trueThis question was addressed to me by my college director while I was bunking the class.Question is from Effect of Adding a Zero to a System topic in division Time Response Analysis, Design Specifications and Performance Indices of Control Systems

Assertion (A): A derivative controller produces a control action for c

1.	Assertion (A): A derivative controller produces a control action for constant error only.Reason (R): The PD controller increases the damping and reduces the peak overshoot.(a) Both assertion and reason are true and R is correct explanation of A(b) Both A and R true but R is not correct explanation of A(c) A is true but R is false(d) A is False but R is trueThis question was addressed to me by my college director while I was bunking the class.Question is from Effect of Adding a Zero to a System topic in division Time Response Analysis, Design Specifications and Performance Indices of Control Systems
Answer» CORRECT option is (d) A is False but R is true To elaborate: The integral CONTROL action produces a control action for error constant not derivative controller. A derivative controller improves the transient state of the control SYSTEM apart from increasing the bandwidth, OVERSHOOT and RISE time.

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