%S-function?for?continuous?state?equation
function?[sysx0strts]=s_function（txuflag）

switch?flag
%Initialization
??case?0
????[sysx0strts]=mdlInitializeSizes;
case?1
????sys=mdlDerivatives（txu）;
%Outputs
??case?3
????sys=mdlOutputs（txu）;
%Unhandled?flags
??case?{2?4?9?}
????sys?=?[];
%Unexpected?flags
??otherwise
????error（[‘Unhandled?flag?=?‘num2str（flag）]）;
end

%mdlInitializeSizes
function?[sysx0strts]=mdlInitializeSizes
sizes?=?simsizes;
sizes.NumContStates??=?2;
sizes.NumDiscStates??=?0;
sizes.NumOutputs?????=?2;
sizes.NumInputs??????=?1;
sizes.DirFeedthrough?=?0;
sizes.NumSampleTimes?=?0;

sys=simsizes（sizes）;
x0=[-0.150];
str=[];
ts=[];

function?sys=mdlDerivatives（txu）
dt=0.10*sin（2*pi*t）;

sys（1）=x（2）;
sys（2）=-25*x（2）+133*u+dt;?
function?sys=mdlOutputs（txu）
dt=0.10*sin（2*pi*t）;

sys（1）=x（1）;
sys（2）=dt;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????1146??2004-12-04?23:24??ann?VSS?control\s.m

?????文件????????894??2004-12-04?23:24??ann?VSS?control\plant.m

?????文件????????258??2004-12-04?23:24??ann?VSS?control\plot.m

?????文件??????11074??2004-12-04?23:24??ann?VSS?control\sim.mdl

?????目錄??????????0??2008-06-04?20:51??ann?VSS?control

-----------?---------??----------?-----??----

????????????????13590????????????????????6