Strange Problem - variable is filled with strange values.

2014 4 6

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更新时间：2014 4 7

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Hello,

I'm using a simulink model with a Matlab FCN block which receives for input 2 signals from his own output. Basically this:

The code from matlab function:

    function  [out]  = blocoControlador2( il_in,il_k,psi_in,psi_k,state)
    %Parameters:
    a= 7.3421E-6;
    b= 6.2343;
    c= 457.8311;
    d= 25.1627;
    Icc= 10;
    Isat= 694;
    N= 350;
    Af=(Isat/N)/(cos((pi/2)*((Isat/N)/Icc)));
    Bf=(pi/2)*(1/Icc);
    f= Af*cos(Bf*il_in);
    lambAsc= a*N*(il_in-f) + (b*N*(il_in-f))./(c+d.*N*abs(il_in-f));
    lambDesc = a*N*(il_in+f) + (b*N*(il_in+f))./(c+d*N*abs(il_in+f));
    %=====================================================================
    %****************CORRENTE CRESCENTE*****************
        if il_in>=il_k && psi_in>=psi_k && il_in<=(Isat/N)&& psi_in==0
            psi=0;        
            st=0;
            %psi= psi_k;
            out= [ psi ; st] ;
        elseif il_in>il_k && psi_in>psi_k && il_in<(Isat/N) && state==0
            psi=psi_k;
            st=0;
            out= [ psi ; st] ;
        elseif il_in>il_k && psi_in>psi_k && il_in~=(Isat/N) && state==0 
            psi=psi_k;
            st=1;                           % HERE!!
            out= [ psi ; st] ;  
        elseif il_in>il_k && psi_in>psi_k && il_in>(Isat/N) && state==1 
        elseif ...
        elseif ...  
        elseif ...
        ...
        else       
            disp('==========default==========')
            disp(il_k)
            disp(il_in)
            disp(psi_k)
            disp(psi_in)
            disp(state)
            psi=psi_k;
            st=state;
            out= [ psi ; st]; 
        end
    end