Wind turbine model block, cp(lambda, beta) function syntax error

Hello, I am trying to run a wind turbine model block from simscape, and I am getting this error.

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

in 'Wind turbine model/cp(lambda,beta)/Fcn1'

has a syntax error

This formula is the generic equation to model cp(lmbda,beta), what am I doing wrong? Do I need to define the coefficients or is it a simple syntax error? I have attached pictures of the wind tubine block parameter

[Ragul E]

Hi brother i'm having the same issue could you help me in solving this

Answer 1

[Geetla Sindhu]

Hello Giovanni,

I understand that you are getting syntax error 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.

[Rajagurunathan P]

not wrok help me

[Rajagurunathan P]

[Rajagurunathan P]

help me what i do any solution pls

[Rajagurunathan P]

help me pls mam ....

Answer 2

[Sam Chak]

Hi @Rajagurunathan P

The error clearly tells you that the math expression has a syntax error, which is a common error when programmer uses some characters incorrectly, or misses some punctuation marks.

In your case, you should use the hyphen-minus (-) an ASCII character, as if it is directly entered from the keyboard.

In short, use (-) instead of (–).