Re: [foxboro] LLAG Block
- From: "Clement, Mark (Kiddmetallurgical - Copper)" <MClement@xxxxxxxxxxxxxxxxxxxxxxxx>
- To: "'foxboro@xxxxxxxxxxxxx'" <foxboro@xxxxxxxxxxxxx>
- Date: Thu, 19 Jul 2007 08:11:57 -0400
Thanks Pat - will try doing some experimenting
Regards
Mark
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx
[mailto:foxboro-bounce@xxxxxxxxxxxxx]On Behalf Of Pat Martens
Sent: Thursday, July 05, 2007 2:30 AM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] LLAG Block
My general approach is to 'play' with these type of dynamic algorithm block.
Set up a trend display (I recommend FoxAnalyst), do some steptesting, fiddle
around with all the parameters involving the dynamics, do some more
steptesting, watch the results.
This gives me a lot more insight to what these blocks really do.
You might be surprised with some of the results when you start with all the
different modes of a PIDA block (including LIMOPT's)!
I've did some testing like this on the LLAG in the past and if my memory
does not fail me, if you set the LAG2 > LAG you will get an overshooting
response when stepping the input, similar to the 'D' term of a PIDA block.
Regards,
Patrick Martens,
Total Raff. Ned. N.V.
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On
Behalf Of Clement, Mark (Kiddmetallurgical - Copper)
Sent: woensdag 4 juli 2007 13:15
To: 'foxboro@xxxxxxxxxxxxx'
Subject: Re: [foxboro] LLAG Block
Trying this again
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx
[mailto:foxboro-bounce@xxxxxxxxxxxxx]On Behalf Of Clement, Mark
(Kiddmetallurgical - Copper)
Sent: Friday, June 29, 2007 1:35 PM
To: 'foxboro@xxxxxxxxxxxxx'
Subject: [foxboro] LLAG Block
Hi All,
Has anyone ever run across documentation on how the LAG2 parameter works
with the LLAG block ?
Specifically interested in knowing what "quadratic lag time " is and how it
could be used
Thanks in advance
Regards
Mark
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Systems (formerly The Foxboro Company). Use the info you obtain here at
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