Subject: Re: KIMM S/W
Date: Wed, 22 May 2002 09:33:17 -0500
From: Brad Thoen <brad.thoen@mts.com>
To: Rod Larson <rod.larson@mts.com>

Rod,

The limit on max freq was put there to insure stability in velocity
mode.  If you go above 100 Hz in velocity mode, the reference generator
goes unstable.

To change this max limit, edit all settings files as follows:
Search for "Refgen".  Remember, each DOF channel has TWO of them, "refgen",
and "prefgen".  Don't forget to do both for each channel or there will be
problems.

Change
                                 maxFreqAttr
                                 (Attribute
                                         minRange 0.01
                                         min 0.1
                                         maxRange 100.0
                                         max 100.0
                                 )

to

                                 maxFreqAttr
                                 (Attribute
                                         minRange 0.01
                                         min 0.1
                                         maxRange 1000.0
                                         max 100.0
                                 )

On a different topic, I am concerned whether you are using the lastest
Super.dll and Coops.o.  Did Terry download this from XCHANGE before he left
to go to Korea?  The CD I gave you several weeks ago is out of date.  I am
going to put the entire project (sources and everything) on the MTS FTP
site in my folder; you can download this if there is any doubt.

-Brad

At 07:52 AM 5/22/2002 -0500, you wrote:
>Brad,
>A couple of problems have shown up today - 1 minor and 1 not so minor.
>
>First, the static lift panel will not force itself to the front of
>another panel that is currently selected.  For example, let us say that
>the static lift panel is behind the fg panel.  If the fg panel is
>selected, and you try to open the static lift panel, it will stay behind
>the fg panel. It does not pop to the front.  If, however, the fg panel
>is NOT selected, but say the digital meter A is at another place on the
>screen, then selecting the static lift panel will jump in front of the
>fg panel.
>
>Now, the not so minor.
>The velocity cutoff freq observer is set at 50 hz. This normally is not
>a problem in acceleration control, but is a huge problem in displacement
>control.  In displacement, this filter cuts off the acceleration fbk by
>30%. Moving the filter up to 100 Hz (max) makes everything a lot better
>(less attenuation), but it would be nice if we could make the damn thing
>disappear (1000 hz)....   Customer does do a lot of displacement tests
>w/ dampers so this has to be fixed. He might live w/ 100 hz filter, but
>I don't want to have this happen again, so we need to get this filter
>out of the way. I don't know what HUD, EPDC and MOC do, but I know that
>all 3 of these customers use displacement control a lot.  so...their
>data for acceleration in displacement control could have a problem.
>
>Rod
