How would it be possible to set the length of the input signal for Matlab function block?

Hi,

I have used a step block (in simulink) as the input provider for a (embedded) matlab function block.

Inside the editor of the matlab function block, there is a condition which make following trouble,

every time I run the simulink model, an error message occur which say that:

" number of rows of the input signal (step function) is not equal to 50 "

-it should be noted, I am aware that it is a user defined error-

but my problem is,

 I don't know how to adapt the length of input signal (step block) to the specified number (50).

Sincerely Yours,

Sahand Radmanesh

Answer 1

[Kaustubha Govind]

Set the Initial Value of the Step block to zeros(1,50) and its Final Value to ones(1,50) to have it produce a signal of length 50.

[sahand]

Thanks,

With your proposed approach the number of columns (second dimension) changed, But again whether I use zeros(1,50) or zeros(50,1), only the second dimension changes and exported variable to Workspace says that the output is a variable with following specification:

52*50 double

and the number of rows always keeps the same value: 52

What could be done for first dimension to be changed?

[Kaustubha Govind]

You probably need to turn off the "Interpret as 1-D" checkbox on the dialog of the Step block.