×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

Steady state error

Steady state error

Steady state error

(OP)

Hello everyone,
I would like to share with you my recent problem with calculating some matlab scripts.
My task is to find the value of the steady state error of an object (with negative feedback loop)

My main idea was to use "feedback" matlab function. Then get the information about the object:

var = feedback(object_transmittance, -1);
INFO = stepinfo(var)
error = INFO.SettlingMin

Thought the .SettlingMin parameter will return me the steady space error.

For now I know it's not correct. I've also tried to use some formulas searched on the net but with no result.
The task seems to be so simple, but I'm not using matlab like everyday, so even such simple things cause me some problems.
Any ideas?
Thank you in advance :)

RE: Steady state error

You can use the method you've created, but you need to add some code to find the index n in your output vector y at which the SettlingMin value occurs, then find the value of (1-y[n]) to find the steady state error to the unit step.

xnuke
"Live and act within the limit of your knowledge and keep expanding it to the limit of your life." Ayn Rand, Atlas Shrugged.
Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips.

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!


Resources