%Tan Nguyen, Trang Pham, Nhan Phan
%ECE 460 
%WINTER 2003
%Project I
%Part I without a controller D(s)
clc
clear
t=[0:0.01:4];
num=[12.1846];
den=[1 4.127 12.1846];
sys=tf(num,den)
ys=step(sys,t);
plot(t,ys)
title(' Step Response of Part I without the Controller ');
xlabel('Time in second');
ylabel('Magnitude');
grid on
[tp,os,ts]=tposts(t,ys)

Transfer function:
        12.18
---------------------
s^2 + 4.127 s + 12.18
 tp =
    1.1200
os =
    0.0999
ts =
    1.7000
