$(20$ pts$)$ Given a system with a unit step response below,

a$.$ Label $($on the plot$)$ and estimate the values of the settle time Ts$,$ overshoot $\%$ OS$,$ the steady state error $e_{\text{s}\text{t}\text{e}\text{n}\text{.}}$

b$.$ If this was a PD servo closed loop system, how would you adjust the Kp $($proportional$)$ and$/$or Kd $($derivative$)$ gains to reduce both the overshoot and steady state error? Explain.

StepResponse