MATLAB: Function sf =aaa(u) | Error: Function definitions are not permitted in this context.

svpwm codesynatx error

%Matlab Code to generate Switching functions
% Inputs are magnitude u1(:),angle u2(:)
% and ramp time signal for comparison u3(:)
function sf =aaa(u)
ts=0.0002;vdc=1;peak_phase_max= vdc/sqrt(3);
x=u(2); y=u(3); mag=(u(1)/peak_phase_max) * ts;
%sector I
 if (x>=0) & (x<pi/3)   ta = mag * sin(pi/3-x);tb = mag * sin(x);  t0 =(ts-ta-tb);
t1=[t0/4 ta/2 tb/2 t0/2 tb/2 ta/2 t0/4];t1=cumsum(t1);
v1=[0 1 1 1 1 1 0];v2=[0 0 1 1 1 0 0];v3=[0 0 0 1 0 0 0];
for j=1:7
if(y<t1(j))
break
end
end
sa=v1(j);sb=v2(j);sc=v3(j);
end
% sector II
 if (x>=pi/3) & (x<2*pi/3)  adv= x-pi/3;
tb = mag * sin(pi/3-adv);ta = mag * sin(adv);
t0 =(ts-ta-tb);
t1=[t0/4 ta/2 tb/2 t0/2 tb/2 ta/2 t0/4];t1=cumsum(t1);
v1=[0 0 1 1 1 0 0];v2=[0 1 1 1 1 1 0];v3=[0 0 0 1 0 0 0];
for j=1:7
 if(y<t1(j)) 
 break 
 end
end
sa=v1(j);sb=v2(j);sc=v3(j);
end
%sector III
 if (x>=2*pi/3) & (x<pi)  adv=x-2*pi/3;
ta = mag * sin(pi/3-adv);tb = mag * sin(adv);
t0 =(ts-ta-tb);
t1=[t0/4 ta/2 tb/2 t0/2 tb/2 ta/2 t0/4];t1=cumsum(t1);
v1=[0 0 0 1 0 0 0];v2=[0 1 1 1 1 1 0];v3=[0 0 1 1 1 0 0];
for j=1:7
 if(y<t1(j))
 break 
 end
end
sa=v1(j);sb=v2(j);sc=v3(j);
end
%sector IV
 if (x>=-pi) & (x<-2*pi/3)  adv = x + pi;
tb= mag * sin(pi/3 – adv);ta = mag * sin(adv);
t0 =(ts-ta-tb);
t1=[t0/4 ta/2 tb/2 t0/2 tb/2 ta/2 t0/4];t1=cumsum(t1);
v1=[0 0 0 1 0 0 0];v2=[0 0 1 1 1 0 0];v3=[0 1 1 1 1 1 0];
for j=1:7
 if(y<t1(j)) 
 break  
 end
end
 sa=v1(j);sb=v2(j);sc=v3(j);  end
% sector V
 if (x>=-2*pi/3) & (x<-pi/3)  adv = x+2*pi/3;
ta = mag * sin(pi/3-adv);tb = mag * sin(adv);
t0 =(ts-ta-tb); t1=[t0/4 ta/2 tb/2 t0/2 tb/2 ta/2 t0/4];t1=cumsum(t1);
v1=[0 0 1 1 1 0 0];v2=[0 0 0 1 0 0 0];v3=[0 1 1 1 1 1 0];
for j=1:7 if(y<t1(j)) break end
end sa=v1(j);sb=v2(j);sc=v3(j);
end
%Sector VI
 if (x>=-pi/3) & (x<0)  adv = x+pi/3;
tb = mag * sin(pi/3-adv);ta = mag * sin(adv);
t0 =(ts-ta-tb);
t1=[t0/4 ta/2 tb/2 t0/2 tb/2 ta/2 t0/4];t1=cumsum(t1);
v1=[0 1 1 1 1 1 0];v2=[0 0 0 1 0 0 0];v3=[0 0 1 1 1 0 0];
for j=1:7
 if(y<t1(j)) 
 break 
end 
 sa=v1(j);sb=v2(j);sc=v3(j);  
end 
 end
sf=[sa, sb, sc];

Best Answer

You are only allowed to have a function statement (except for anonymous and inline functions) inside another function file so:
function x = fun(y)
        .
        .
    function sf =aaa(u)
        .
        .
    end
end
is permitted, but
first line of my script file
          .
          .
      function sf =aaa(u)
          .
          .
      end
is not.
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