Assignment:
Task 1. Proportional compensation
Assume GSC (s) is a proportional (P) controller, i.e., GSC (s) = KP.
(a) Find the closed-loop system transfer function and determine the range of KP > 0 for stability.
(b) For the uncompensated closed-loop system (i.e., with KP = KP1 = 1):
Simulate and plot the system unit-step response c(t).
Determine (from the plot) the P.O., peak time Tp, rise time Tr, settling time Ts, and steady-state error e step () in % of the input.
Find also e ramp () =?
Plot the Bode diagrams and indicate the bandwidth, and the phase and gain margins.
(c) Find KP = KP2 that yields a steady-state error e step () = 1%.
Repeat part (b) with the found KP2.
(d) Plot the RL for KP and determine KP = KP3 that yields critically damped closed-loop response.
Repeat part (b) with the found KP3.
(e) Compare the results from (b), (c) and (d), and make comments.
