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LALIT KUMAR

New Delhi

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    • Robert Dickinson

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    • Robert Dickinson April 23, 2013 at 9:45am

      Here is an example  http://www.swmm5.net/2010/12/pid-control-in-swmm-5-for-type-3-pump.... 

      I would suggest doing a sensitivity analysis for each of the three components for your particular weir to see the effect of each of the components.

    • Robert Dickinson April 23, 2013 at 8:16am

      Do you mean a PID Control for a Weir?


      Subject: PID Control in SWMM 5 for a Weir

      The blog http://swmm5.blogspot.com/2010/12/pid-control-in-swmm-5-for-type-3-... describes theFunction getPIDSetting which returns the PID setting at each time step. The PID parameter set contains three values -- a proportional gain coefficient, an integral time (in minutes), and a derivative time (in minutes) which are kp, ki and kd, respectively. More about the theory of PID controllers can be found at http://en.wikipedia.org/wiki/PID_controller.

      Here is an example PID Rule that will keep the node depth at 3 feet in a SWMM 5 model by changing the Weir Setting. The example file is attached in this blog. In this particular example, you can reduce the oscillations about the 3 foot rule level by lowering the integral time and derivative time coefficients in the PID control rule.

      RULE PID_Weir
      ; the PID controller adjusts the weir height to have a
      ; depth of 3 feet in Node 82309e
      IF NODE 82309c DEPTH <> 3
      THEN WEIR WEIR1@82309c-15009c SETTING = PID 10 -.01 -.01
      ; kp ki kd
      PRIORITY 1
      3293135523?profile=original

    • Robert Dickinson April 23, 2013 at 8:13am

      Hi Lalit, I would be better that you post a comment instead of a status update, i see those faster.   

    This reply was deleted.

    Gender

    Male


    Location

    New Delhi


    Birthday:

    May 11


    Relationship Status:

    Single


    About Me:

    Civil Engineering Student in IIT Delhi.


    Preferred Language

    English (U.S.)


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