Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Deriving a TF from Simulink block diagram

Deriving a TF from Simulink block diagram

Deriving a TF from Simulink block diagram

Dear All,

I have a huge Simulink block diagram with many parameters, with 1 input and 1 output that I have determined (SISO system). It is necessary for me to obtain a transfer function of that block diagram for a specific input and output.

Furthermore, to be able to easily manipulate and discuss about different results I want Matlab to derive that transfer function in a parametric form. Briefly, the "values" of the "variables or constants" existing in the block diagram will be "parametric", but not "numeric". Naturally, at the very end, the desired transfer function
will also be parametric. Is that possible?

PS: There exist functions belonging to the Control System Toolbox ("connect", "blkbuild" and "ss2tf") with which one is able to obtain a user-defined transfer function from a Simulink block diagram. However, with these functions it is only possible to work by assigning "real" or "complex" numbers within an "m-file", so that is not the thing I am looking for.

Thank you,

RE: Deriving a TF from Simulink block diagram

Have you tried the linmod function?  Also the linear analysis option?

Didn't work for me yet but my system is non-linear, you
may be OK.


Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close