If response of a control system is to be free of offset and oscillation, the most suitable controller is_________________?
Correct answer: A. Proportional integral-derivative (PID) controller
- A. Proportional integral-derivative (PID) controller
- B. Proportional-derivative (PD) controller
- C. Proportional-integral (PI) controller
- D. Proportional controller
Explanation
Integral action removes steady-state offset, while derivative action improves damping and reduces oscillation. Therefore, a properly tuned PID controller provides both features better than P, PD, or PI control alone.
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