Using the characteristic equation, determine the dynamic behavior of a PI controller with () equal to 4 applied to a second-order process (Kp =2, () =5, and () =1.5). Assume that (Gs(s) and Ga(s) are equal to unity. Find the values of Kc that render this closed-loop process unstable.

P7.2.3tid Using fhe characeristic equation, determine the dynammic behavior of a P controller with ti equal to 4 upplied tar second-ardit process (Kp=2,tn5 and L115). A swume that G2(s) and G4(s) are squal ta unity. Find the values af Ksthat, render this closed-loop process unstable