How can I represent the following piecewise function in Simulink

Question

Idrak Karim 2020-2-29

0
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https://ww2.mathworks.cn/matlabcentral/answers/508254-how-can-i-represent-the-following-piecewise-function-in-simulink

评论： Walter Roberson 2021-4-8

采纳的回答： Priyanshu Mishra

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Hello i need to represent a piecewise function in my simulink model that mirros the solution i got in matlab.

syms x

g= piecewise(0<=x<=0.0375, ((-10300/3)+((704000*x)/9)),0.0375<=x<=0.0625, -500, 0.0625<=x<=0.1,((39500/9)-(704000*x)/9));

fplot(g)

I am trying to use the matlab user defined function

function y = fcn(u)
if (u >= 0 && u <= 0.0375)
    G= (-10300/3)+ ((704000*u)/9);
 
elseif (u >= 0.0375 && u<= 0.0625)
    G= -500;
    
elseif (u >= 0.0625 && u<= 0.1)
    G= (39500/9)-((704000*u)/9);
end
y = G;

with my input u, as a constant block with linspace(0,0.1), but it does not work. CAN SOMEONE PLEASE HELP ME URGENTLY. NEED IT ASAP FOR MY DISSERTATION.