MATLAB: How to set maximum and minimum limit of signal in MATLAB code.

ga

I need to set maximum and minimum value of variables. For example,
x3= x1 + x2
where
maximum value of x1 = 3
minimum value of x1 = 0
maximum value of x2 = 2.5
minimum value of x2 = -1
I didn't understand that how i can implement it in MATLAB codes.

Best Answer

Hi Usman, you can use one of the codes below. However, I recommend the first one, because no loop is necessary here. 
x1Max = 3;
x1Min = 0;
x2Max = 2.5;
x2Min = -1;
x1(x1>x1Max) = x1Max;
x1(x1<x1Min) = x1Min;
x2(x2>x2Max) = x2Max;
x2(x2<x2Min) = x2Min;
x3 = x1 + x2;
or
x1Max = 3;
x1Min = 0;
x2Max = 2.5;
x2Min = -1;
x3 = zeros(length(x1),1);
for i = 1:length(x1)%or length x2 since they must have the same dimensions. 
    if x1(i)>x1Max
        x1(i) =  x1Max;
    elseif x1(i)<x1Min
        x1(i) = x1Min;
    end 
    if x2(i)>x2Max
        x2(i) =  x2Max;
    elseif x2(i)<x2Min
        x2(i) = x2Min;
    end
    x3(i) = x1(i)+x2(i);
end
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