compute the indefinite integral

2022 10 23
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how can I compute the indefinite integral of an anonymous function?
f=1010;
d= 0:0.0001:8;
z = @(d) sawtooth(2*pi*f*d+pi,0);

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Torsten
Torsten 2022-10-23
If you are lucky, using the symbolic toolbox and "int".
"sawtooth" is a numerical function.
Thus you will have to compute the indefinite integral from above using pencil and paper.
William Lancelot
William Lancelot 2022-10-23
thank you for your reply
I did compute the integral of the above function symbolically using syms and int and a bunch of heavisides. However, I can't use anything symbolic when I try to import the result in Simulink. I converted the symbolic expression with matlabFunction, but I do not know how to use it in Simulink
William Lancelot
William Lancelot 2022-10-23
I am trying to plot the above function and its integral in Simulink

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Torsten
Torsten 2022-10-23
Ran in:

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Ran in:
f = 1010;
z = @(d) sawtooth(2*pi*f*d+pi,0);
dstart = 0.0;
dend = 0.01;
delta_d = 1e-5;
d = dstart:delta_d:dend;
intz = cumtrapz(d,z(d));
hold on
yyaxis left
plot(d,z(d))
yyaxis right
plot(d,intz)
hold off

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