Results 1 to 5 of 5
  1. #1
    Join Date
    Apr 2003
    Posts
    106

    Niagara Ax- Anyone have a rate limiter block?

    I need to limit a percentage output over time. The spyder has a rate limiter that works and is exactly what i need. If only i can come up with something similar in a jace. I have had no luck so far. Anyone have any ideas or something that works?

  2. #2
    Join Date
    Jul 2008
    Posts
    1,415
    could write a program object i spose...I would myself but a little busy atm

    http://www.mathworks.com.au/help/sim...telimiter.html
    1 + 1 = 3 ( *** for very large values of 1)

    ...everybody wants a box of chocolates and long stemmed rose

  3. #3
    Join Date
    Apr 2003
    Posts
    106
    Quote Originally Posted by MatrixTransform View Post
    could write a program object i spose...I would myself but a little busy atm

    http://www.mathworks.com.au/help/sim...telimiter.html
    I need to learn a little more about writing custom blocks. My skills are not up to par to write my own yet.

  4. #4
    Join Date
    Jun 2009
    Location
    StL, MO
    Posts
    572
    A LoopPoint module can be made to work. Link the output you wish to limit to the LoopPoint Setpoint slot. Link the LoopPoint Output to LoopPoint Controlled Variable. LoopPoint Output is the limited output. Set LoopPoint Loop Action to Reverse. Try 0.5 proportional and 10.0 integral to start.
    UA LU 562

  5. #5
    Join Date
    Jul 2008
    Posts
    1,415
    Quote Originally Posted by DaveCR View Post
    A LoopPoint module can be made to work.
    yep, good solution ... integral action is exactly a rate limiter
    1 + 1 = 3 ( *** for very large values of 1)

    ...everybody wants a box of chocolates and long stemmed rose

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event