Syntax error in Simulink

I am getting a syntax error in Simulink in a Fcn block:

c1*(c2/u[2]-c3*u[3]-c4)*exp(-c5/u[2])+c6*u[1]

Answer 1

[Geetla Sindhu]

Hello Nibash,

I understand that you are getting syntax error while using MATLAB function block in Simulink.

The cause of this error is the use of square brackets [ ] for indexing the input vector. Instead, you can try using the following syntax to solve the issue.

function y = fcn(u)
y = c1*(c2/u(2) – c3*u(3) – c4)*exp(-c5/u(2)) + c6*u(1);
end

Hope this resolves your issue.

Thank you.