CP6.6 Consider the feedback control system in Figure CP6.6. Using the for function, develop an m-file script to compute the closed-loop transfer function poles for 0 5 ≤ ≤ K and plot the results denoting the poles with the " " × symbol. Determine the maximum range of K for stability with the Routh–Hurwitz method.

Compute the roots of the characteristic equation when K is the minimum value allowed for stability.

FIGURE CP6.6 A single-loop feedback control system with parameter K. 1 R(s) Y(s) 3+55+(K-3)s+ K