function?[sysx0strts]?=?BPF_Tustin（txuflag）
%SFUNTMPL?General?M-file?S-function?template
%global?DT=2e-4;
switch?flag
??%%%%%%%%%%%%%%%%%%
??%?Initialization?%
??%%%%%%%%%%%%%%%%%%
??case?0
????[sysx0strts]=mdlInitializeSizes;
??%%%%%%%%%%%%%%%
??%?Derivatives?%
??%%%%%%%%%%%%%%%
??case?1
????sys=mdlDerivatives（txu）;
??%%%%%%%%%%
??%?Update?%
??%%%%%%%%%%
??case?2
????sys=mdlUpdate（txu）;
??%%%%%%%%%%%
??%?Outputs?%
??%%%%%%%%%%%
??case?3
????sys=mdlOutputs（txu）;
??%%%%%%%%%%%%%%%%%%%%%%%
??%?GetTimeOfNextVarHit?%
??%%%%%%%%%%%%%%%%%%%%%%%
??case?4
????sys=mdlGetTimeOfNextVarHit（txu）;
??%%%%%%%%%%%%%
??%?Terminate?%
??%%%%%%%%%%%%%
??case?9
????sys=mdlTerminate（txu）;

??%%%%%%%%%%%%%%%%%%%%
??%?Unexpected?flags?%
??%%%%%%%%%%%%%%%%%%%%
??otherwise
????DAStudio.error（‘Simulink:blocks:unhandledFlag‘?num2str（flag））;

end

%?end?sfuntmpl

%
%=============================================================================
%?mdlInitializeSizes
%?Return?the?sizes?initial?conditions?and?sample?times?for?the?S-function.
%=============================================================================
%
function?[sysx0strts]=mdlInitializeSizes

sizes?=?simsizes;

sizes.NumContStates??=?0;
sizes.NumDiscStates??=?5;
sizes.NumOutputs?????=?1;
sizes.NumInputs??????=?2;
sizes.DirFeedthrough?=?0;
sizes.NumSampleTimes?=?1;???%?at?least?one?sample?time?is?needed

sys?=?simsizes（sizes）;

%
%?initialize?the?initial?conditions
%
x0??=?[0?0?0?0?0];
str?=?[];
ts??=?[-2?0];???%?inherited?sample?time????????

%?end?mdlInitializeSizes

function?sys=mdlDerivatives（txu）

sys?=?[];

%?end?mdlDerivatives

%=============================================================================
%?mdlUpdate
%?Handle?discrete?state?updates?sample?time?hits?and?major?time?step
%?requirements.
%=============================================================================
%
function?sys=mdlUpdate（txu）
DT=2e-4;
Wr=u（2）;
K=0.065;%0.065
WrxDt=Wr*DT;
WrxDt_Sqr=WrxDt*WrxDt;
KxWrxDt=K*WrxDt;
Temp1=x（1）+x（1）-x（2）;
%Temp2=x（3）-x（4）-x（1）+x（2）;
Temp2=u（1）-x（3）-x（1）+x（2）;
Temp3=KxWrxDt*Temp2;
Temp4=WrxDt_Sqr*x（2）;
x（5）=Temp1+Temp3-Temp4;

%x（4）=x（3）;
x（3）=u（1）;
x（2）=x（1）;
x（1）=x（5）;
sys?=x;????????????%返回當前狀態變量值

%?end?mdlUpdate

%=============================================================================
%?mdlOutputs
%?Return?the?block?outputs.
%=============================================================================
%
function?sys=mdlOutputs（txu）
%?%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
sys=x（5）;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%=============================================================================
%?mdlGetTimeOfNextVarHit
%?Return?the?time?of?the?next?hit?for?this?block.??Note?that?the?result?is
%?absolute?time.??Note?that?this?function?is?only?used?when?you?specify?a
%?variable?discrete-time?sample?time?[-2?0]?in?the?sample?time?array?in
%?mdlInitializeSizes.
%===

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

?????文件???????3312??2017-04-11?15:55??RPC\LPF_Tustin.m

?????文件???????3905??2017-04-11?11:10??RPC\Rep_Ctrl.m

?????文件?????186013??2017-04-11?17:03??RPC\Full_bridgeRep.mdl

?????文件???????3443??2017-04-11?14:16??RPC\HPF_Tustin.m

?????文件???????3544??2017-01-15?20:29??RPC\BPF_Tustin.m

?????目錄??????????0??2017-04-11?17:03??RPC

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

???????????????200217????????????????????6