Consider the non-unity feedback system is depicted in Figure CP4.11.
(a) Determine the closed-loop transfer function T(s) = Y(s)/R(s).
(b) For K = 10, 12, and 15, plot the unit step responses. Determine the steady-state errors and the settling times from the plots.
For parts (a) and (b), develop an m-file that computes the closed-loop transfer function and generates the plots for varying K.
Figure CP4.11
Closed-loop system with a sensor in the feedback loop.

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Controller Process 20 +4.5+64 Sensor s+1