s $=$ tf$(\text{'}$s$)$;

tau$1=0\mathrm{.}4$;

K$1=1/$tau$1$;

tau$2=0\mathrm{.}3$;

K$2=1/$tau$2$;

P$=($K$1*$K$2)/(($tau$1*$s$+1)*($tau$2*$s$+1))$

Kp$=50$

Ki$=100$

Kd$=0$

C$=$pid$($Kp$.$Ki$.$Kd$)$

T$=$feedback$($C$*$P$,1)$

t$=0$:$0\mathrm{.}01$:$5$;

step$($T$,$t$)$

stepinfo$($T$)$

o$($T$)$

Please find the optimal Kp and Ki values within the range. I need to find the optimal Kp$,$ Ki values for the contour graph.