function [sys,x0,str,ts] = spacemodel(t,x,u,flag)
switch flag,
case 0,
[sys,x0,str,ts]=mdlInitializeSizes;
case 3,
sys=mdlOutputs(t,x,u);
case {2,4,9}
sys=[];
otherwise
error(['Unhandled flag = ',num2str(flag)]);
end
function [sys,x0,str,ts]=mdlInitializeSizes
sizes = simsizes;
sizes.NumContStates = 0;
sizes.NumDiscStates = 0;
sizes.NumOutputs = 3;
sizes.NumInputs = 3;
sizes.DirFeedthrough = 1;
sizes.NumSampleTimes = 0;
sys = simsizes(sizes);
x0 = [];
str = [];
ts = [];
function sys=mdlOutputs(t,x,u)
r=u(1);
dr=cos(t);
ddr=-sin(t);
th=u(2);
dth=u(3);
c=15;
e=r-th;
de=dr-dth;
s=c*e+de;
fx=25*dth;
b=133;
dL=-10;dU=10;
d1=(dU-dL)/2;
d2=(dU+dL)/2;
dc=d2-d1*sign(s);
epc=0.5;k=10;
ut=1/b*(epc*sign(s)+k*s+c*de+ddr+fx-dc);
sys(1)=ut;
sys(2)=e;
sys(3)=de;