×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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

Using Inverse control blocks for fast simulation

Using Inverse control blocks for fast simulation

Using Inverse control blocks for fast simulation

(OP)
I'm working on this Idea and got some results and I need some analysis and consultation on this :

This is the classic and simple way of Feedback control With a Plnet,Setpoint(w),controller(R):
I got the results in graph.

the RED LINE for the controlling Signal u
the BLUE LINE for set point w
the GREEN one for the out put y

now

if we try the bottom model which is the inverse of the above, hypotheticaly we have to get the same controlling signal u but it's not,
what does this mean ?anything about being fast?
how can we discuss the comparison ?



thanks.

RE: Using Inverse control blocks for fast simulation

In your first sequence, the feedback signal (for comparison against the step change in the process variable) is shown to be the final controller output signal. In actual practice, it should be the process variable's reaction to the controller output ?

RE: Using Inverse control blocks for fast simulation

(OP)
I didn't get the point can you explain.

RE: Using Inverse control blocks for fast simulation

In this first simulation, you've got the controller output signal acting as the process variable feedback against the step change in setpoint. That cannot be right.

How does the system process control variable change in relation to the change in controller output? This part of the control block is not here. Dont know how I can explain it in simpler language.

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



News


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