Below shows code that I wrote for a problem that I'm trying to solve,(adsbygoogle = window.adsbygoogle || []).push({});

function der = dqind(t,x);

%ids=x(1);iqs=x(2);idr=x(3);iqr=x(4);x(5)=wm;

poles=6;

w=2*pi*60;

Lm=15/w;

Ls=0.15/w + Lm;

Lr=0.1/w + Lm;

Rs=0.2;Rr=0.1;J=0.5;B=0.1;

dqabcT=[1 -0.5 -0.5;0 sqrt(3)/2 -sqrt(3)/2;1 1 1];

inductor_matrix = [Ls 0 Lm 0;0 Ls 0 Lm;Lm 0 Lr 0;0 Lm 0 Lr];

inverse_of_inductor_matrix=inv(inductor_matrix);

if (t<=10) V=220/sqrt(3);

else V=220;

end;

Vst=[V*sin(w*t);V*sin(w*t-2*pi/3);V*sin(w*t-4*pi/3)];

Vdqs=dqabcT*Vst;

Vvector=[Vdqs(1:2,1);0;0];

wo=x(5,1)*poles/2;

speed_voltage_matrix = [Rs 0 0 0;0 Rs 0 0; 0 wo*Lm Rr wo*Lr;-wo*Lm 0 -wo*Lr Rr];

Torque=(poles/3)*(x(3)*x(2)-x(1)*x(4));

der=inverse_of_inductor_matrix*(Vvector-speed_voltage_matrix*x(1:4,1));

der(5,1)=(Torque - B*x(5,1))/J;

When I run the above code, I get what I expected. I now what to do something a little different which requires me to transform my solutions using a matrix.

So, what I want to do exactly is solve the above diff. equation (ie.

[t,x]=ode23(@dqind,.....);) and tranform every solution that it computes with a matrix (ex. [1 4 5 3; 3 5 2 7; 3 4 5 6; 3 5 4 3])

In order to do this, would I need to include this matrix transform in the M-File that I call to solve the above code ?

Would I write another M-File ?

Thanks

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# Matlab question

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