Hello. I'm using the following code in embedded matlab in simulink. And I,m getting the message that Variable 'D' is not fully defined on some execution paths. And i don't kno

function D = improvedFOCV(VA, G, T)

persistent VocSTC

persistent K1

persistent Ctv

persistent Cgv

persistent Kv

persistent Bt

persistent Ag

persistent Voc

persistent Dprev

if isempty(Bt)

Bt=0.0016;

end

if isempty(Ag)

Ag=0.006;

end

if isempty(VocSTC)

VocSTC=37.6;

end

if isempty(Kv)

Kv=-0.35;

end

if isempty(K1)

K1=0.78;

end

if isempty(Dprev)

Dprev=0.5;

end

Ctv = 1+(Kv/VocSTC)*(T-25);

Cgv = 1+((Bt*Ag)*(G-1000));

Voc=Ctv*Cgv*VocSTC;

Vmpp=K1*Voc;

DeltaVA=Vmpp-VA;

if (DeltaVA<0)

D =Dprev+0.0001;

elseif(DeltaVA>0)

D=Dprev-0.0001;

end

if D>=0.9

D=0.9;

elseif D<0

D=0;

end

Dprev=D;

Answer 1

[Benjamin Thompson]

If DeltaVA could evaluate to zero then D will not be defined. If you want to be sure D is defined, then initialize it to a good value at the beginning of your code.

[Tarun Reddy Pashya]

I have tried evaluating D to zero and gave a condition. But still I can see the same error and some other errors like Errors occurred during parsing of MATLAB function 'improveddFOCV/MATLAB Function. Can you please help me? If you're willing to help, do share you're email id or email me to [e-mail].