Syntax Error Simulink fcn block

lokman alici

2020 6 6

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The expression: (-3*B*L*L*u(4))/J+(a*L*u(1))+(a*L*u(2))+(a*L*u(3)) in 'omnirobotcontrol/Subsystem/theta_2dot' has a syntax error.

WhY I am getting this error. I can't see the wrong :(

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Ameer Hamza 2020-6-7

Can you show the code inside the MATLAB function block?

lokman alici 2020-6-7

在 MATLAB Online 中打开

function x_2dot = fcn(u)
J = 0.01;
B = 0.1;
K = 0.01;
R = 1;
L = 0.5;
a=1;
m=1;
x_2dot=(-3*B*u(4))/(2*m)-((a*sin(u(5))*u(1))/m)-((a*sin((pi/3)-u(5))*u(2))/m)+((a*sin((pi/3)+u(5))*u(3))/m);
end

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Ameer Hamza 2020-6-7

在 MATLAB Online 中打开

0 个投票

Try this

function x_2dot = fcn(u)
x_2dot = 0; % initialize to tell simulink about its size
J = 0.01;
B = 0.1;
K = 0.01;
R = 1;
L = 0.5;
a=1;
m=1;
x_2dot=(-3*B*u(4))/(2*m)-((a*sin(u(5))*u(1))/m)-((a*sin((pi/3)-u(5))*u(2))/m)+((a*sin((pi/3)+u(5))*u(3))/m);
end