Simulink and Embeded Matlab Function

Hi, I have a question about working with Embeded Matlab function block in simulink. why this block cant figure out matrix input? for example i wrote a function in this block in the following: function [ y_hat] = fcn(u1, u2, u3, u4, u5, y, P, teta) which size of teta is 4*1 and size of P is 4*4, but when i run my simulink file,matlab thinks that P and teta size are 1*1 Would you pls tell me, how can i cope with it?

Answer 1

[Mischa Kim]

I guess, there might be a bug inside the embedded function. Did you make sure that the matrix-vector operations are all correct? For example, multiply [4x4] x [4x1] rather than the other way around?

Can you share your code as an attachment to your question and the error msg ?

See for example the sample model and code below.

The function looks like this:

function y = fcn(a,b)

x = a*b;
y = dot(x,x);