AP5.2 A closed-loop system is shown in Figure AP5.2. Plot the response to a unit step input for the system for z = 0,

AP5.2 A closed-loop system is shown in Figure AP5.2.

Plot the response to a unit step input for the system for τz = 0, 0.05, 0.1, and 0.5. Record the percent overshoot, rise time, and settling time (with a 2%

criterion) as τz varies. Describe the effect of varying

τz. Compare the location of the zero − /1 τz with the location of the closed-loop poles.

R(s) 5440(72s+1) s(s+28s +432) Y(s) FIGURE AP5.2 System with a variable zero.