control hystérésis 4 level

function dP=active(x)
err=x(1);hys=x(2);
if err>=hys
dP=2;
elseif (0<err && err<hys)
dP=1;
elseif (-hys<err && err<0)
dP=-1;
elseif err<-hys
dP=-2;
end;
end
i got problem:Not enough input arguments line (2).

4 个评论

How are you calling the function? What is the input provided?
input it is Err
Are you working with a Simulink model?
Or are you just running the code you posted?
I use simulink model. I use simulink DPC with NPC 3level (control error power direct with hystirsis 4 level )

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