Re: [foxboro] PIDA-FBTUNE configuration

Hi Budana,

  We have a flotation system setup with three PIDA controllers using a
FeedForward signal.  The output of the 1st rougher is connected to the bias
of the 2nd rougher.  The output of the 2nd rougher is connected to the bias
of the scavenger.  This helped us control the interaction between the cell
levels, and responds well to changing flow rates.

  We had a FBTUNE setup for awhile, but typically it caused the controllers
to become very sluggish, and we quit experimenting with them.

  All of our cells are initially tuned with the following:

  PBAND  50
  INT       0.5
  DERIV    0

  Hand tuning starts from these values.

Steve Murray
Asarco

-----Original Message-----
From: Budana_Prijadi@xxxxxxx [mailto:Budana_Prijadi@xxxxxxx]
Sent: Tuesday, June 17, 2003 15:13
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] PIDA-FBTUNE configuration

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