Multiple choice

For the following feedback system G(s) = $\bigg( \frac{1}{(s + 1)(s+2)} \bigg)$. The 2% settling time of the step response is required to be less than 2 seconds.

Which one of the following compensators C(s) achieves this?

  1. 3$\bigg( \frac{1}{s + 5} \bigg)$
  2. 5$\bigg( \frac{0.03}{s} + 1\bigg)$
  3. 2(s + 4)

  4. 4$\bigg( \frac{s +8}{s + 3} \bigg)$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Correct option is (3).