Function call failed when calling matlab function inside function block
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Davide
on 8 Apr 2024 at 12:30
Commented: Davide
on 8 Apr 2024 at 17:22
clear
close all
clc
x = sym('x',[3 1],'real');
u = sym('u',[1 1],'real');
%% Plant definition
R = 0.1;
alpha = 10.4;
beta = 16.5;
rho = -1.16*x(1)+0.041*x(1)^3;
f = [alpha*(x(2)-x(1)-rho)
x(1)-x(2)-x(3)
-beta*x(2)-R*x(3)];
g = [0;1;0];
h = x(1);
C = [1 0 0];
x_dot = f+g*u;
matlabFunction(x_dot,'File','fg_chua','Vars',{[u;x]});
The function is called in a Simulink MatlabFunction block:
fg_chua_sim is defined as:
function x_dot = fg_chua_sim(ux)
x_dot = fg_chua(ux);
end
The execution of the Simulink model fails with:
Error:Function call failed.
Function ' ' (#53.41.52), line 2, column 9:
"fg_chua(ux)"
Launch diagnostic report.
Why is that?
0 Comments
Accepted Answer
Fangjun Jiang
on 8 Apr 2024 at 12:48
Edited: Fangjun Jiang
on 8 Apr 2024 at 12:52
Okay, fg_chua() is generated by matlabFunction(). You need to specify the size of ux in the MATLAB Function block.
Open the MATLAB Function block Editor, click Edit Data, set the size of ux to be 4, based on the diagram.
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