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資源簡介

基于EKF的三相PMSM無傳感器矢量控制,根據現代永磁同步電機控制原理及Matlab仿真搭建,仿真模型已通過調試,波形完美,可以作為參考資料

資源截圖

代碼片段和文件信息

function?[sysx0strts]?=EKF(txuflag)
%?The?following?outlines?the?general?structure?of?an?S-function.
switch?flag
??%%%%%%%%%%%%%%%%%%
??%?Initialization?%
??%%%%%%%%%%%%%%%%%%
??case?0
????[sysx0strts]=mdlInitializeSizes;
??%%%%%%%%%%%%%%%
??%?Derivatives?%
??%%%%%%%%%%%%%%%

??%%%%%%%%%%
??%?Update?%
??%%%%%%%%%%
??case?2
????sys=mdlUpdate(txu);????
??%%%%%%%%%%%
??%?Outputs?%
??%%%%%%%%%%%
??case?3
????sys=mdlOutputs(txu);
??%%%%%%%%%%%%%%%%%%%%%%%
??%?GetTimeOfNextVarHit?%
??%%%%%%%%%%%%%%%%%%%%%%%
??case?{149}
????sys=[];
??%%%%%%%%%%%%%
??%?Terminate?%
??%%%%%%%%%%%%%

??%%%%%%%%%%%%%%%%%%%%
??%?Unexpected?flags?%
??%%%%%%%%%%%%%%%%%%%%
??otherwise
????error([‘Unhandled?flag?=?‘num2str(flag)]);
end

%?end?sfuntmpl

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

global?P0;
sizes?=?simsizes;

sizes.NumContStates??=?0;
sizes.NumDiscStates??=?4;
sizes.NumOutputs?????=?4;
sizes.NumInputs??????=?4;
sizes.DirFeedthrough?=?0;
sizes.NumSampleTimes?=?1;???

sys?=?simsizes(sizes);
%?initialize?the?initial?conditions
x0??=?[0?0?0?0];
P0?=?diag([0.1?0.1?0?0]);%P估計初值

%?str?is?always?an?empty?matrix
str?=?[];
ts??=?1e-6;
%?end?mdlInitializeSizes
%=======================================================================
%?mdlDerivatives
%?Return?the?derivatives?for?the?continuous?states.
%=======================================================================
function??sys?=?mdlUpdate(txu)
????global?P0;
????Rs?=?2.875;%電阻
????Ls?=?0.0085;%電感
????np?=?2;%極對數
????J?=?0.008;%轉動慣量
????flux?=?0.3;%磁鏈
????B1?=?0;%阻尼系數
????Q?=?diag([0.1?0.1?1?0.01]);
????R?=?diag([0.2?0.2]);
????T?=?1e-6;
????vs_ab?=?[u(1)?u(2)]‘;
????is_ab?=?[u(3)?u(4)]‘;
????H?=?[1?0?0?0;?0?1?0?0];
????B?=?[1/Ls?0?0?0;?0?1/Ls?0?0]‘;
????F?=?[-Rs/Ls?0?flux/Ls*sin(x(4))?flux/Ls*x(3)*cos(x(4));0?-Rs/Ls?-...
????????flux/Ls*cos(x(4))?flux/Ls*x(3)*sin(x(4));?0?0?0?0;?0?0?1?0];%雅克比矩陣
????%非線性系統矩陣函數3/2*np^2*flux/J*(x(2)*cos(x(4))-x(1)*sin(x(4)))-B1*x(3)/J
????f1?=?[-Rs/Ls*x(1)+flux/Ls*x(3)*sin(x(4));-Rs/Ls*x(2)-flux/Ls*x(3)*cos(x(4));?0;?x(3)];
????
????f2?=?diag([1?1?1?1])+T*F;%系統轉移矩陣
????X_pred?=?x+T*(f1+B*vs_ab);%系統轉移矩陣
????Y_pred?=?H*X_pred;%測量預測值
????Y?=?is_ab;
????P_pred?=?f2*P0*f2‘+Q;%預測值
????K?=?P_pred*H‘*inv(H*P_pred*H‘+R);%增益
????sys?=?X_pred+K*(Y-Y_pred);
????P0?=?P_pred-K*H*P_pred;%估計值????
%=============================================================================
%?mdlOutputs
%?Return?the?block?outputs.
%=============================================================================
%
function?sys=mdlOutputs(txu)

sys=x;

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

?????文件???????2970??2018-10-31?19:04??PMSM-EKF\EKF.m

?????文件??????40210??2018-11-02?00:01??PMSM-EKF\PMSM_EKF.slx

?????目錄??????????0??2018-11-02?00:04??PMSM-EKF

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

????????????????43180????????????????????3


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