9. Given a unity-feedback system with the forward-path transfer function
G (s) — (s + 1)(s + 3)(s + 6)
K
Use MATLAB to do the following:
a) draw the Bode plot b) draw the Nyquist diagram c) draw the Nichols chart d) find the range of gain, K, to yield stability. Use Bode plots and frequency response techniques. e) Find the phase margin and gain margin of the system f) Determine if the system is stable or not
1 Answer