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VIS (SRM)
terrence.tsang - 5:51 Monday 28 June 2021 (17302) Print this report
SRM real-time model modification for optical lever sensor correction.

As is mentioned during 2021-06-25 VIS meeting, I would like to add a sensor correction path for the optical lever so we get a better estimation of the optics residual motion.

This is crucial as well if we would like to utilize the optical lever signal for damping when the seismic noise level is high. But we haven't had consent on this so for now this path is purely for measurement purpose.

I mentioned I would like to add ACCALIGN matrix as well because there was an LVDTALIGN matrix already (and a screen for ACCALIGN..) and it was useful. But I decided not to, so I break as few library links as possible in the real-time model. I will be using ACC2EUL matrix instead for diagonalization purpose.

The model I changed is

/opt/rtcds/userapps/release/vis/k1/models/k1vissrmt.mdl and /opt/rtcds/userapps/release/vis/k1/models/k1vissrmp.mdl

I disabled the library link to the Payload and Tower master models. I did not break them so they can be restored later if necessary.

I have only modified the model but not make and make-install. It's been almost one year since I last modify a model and I am afraid I might've done something wrong so I would very much like current maintainers to review the changes before it's applied.

I will also need to modify the MEDM screen later to reflect these changes. I will consult people on how to do this later.

In the attachments, you will find the modifications to the models. Fig. 1 and 2 are changes in the tower model while Fig. 3 and 4 are changes in the payload model.

 

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Comments to this report:
satoru.ikeda - 12:39 Monday 28 June 2021 (17305) Print this report

For k1vissrmt and k1vissrmp in K-Log#17302, I have make and install and reboot the model and everything is done.

Git:Release/0.1.10

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takahiro.yamamoto - 21:01 Monday 28 June 2021 (17315) Print this report
The build process seems to be incomplete.
It seems to be better to rebuild alternately again.
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takahiro.yamamoto - 21:22 Monday 28 June 2021 (17316) Print this report
cdsIPCx_SHMEM must be used instead of cdsIPCx_IPCIE (dolphin) on the payload model in the first place.
Was the build process really successful?
terrence.tsang - 21:55 Monday 28 June 2021 (17317) Print this report

Hi Yamamoto-san,

When I first made the modification, indeed I was using the wrong cdsIPCx_IPCIE CDS part. Later Ikeda-san modified them to cdsIPCx_SHMEM but I am not entirely sure how he did it. I will communicate with him and work on resolving this problem. Thanks.

 

terrence.tsang - 22:52 Monday 28 June 2021 (17318) Print this report

I have modified the MEDM screen of the payload so I can access the SEISALIGN matrix and the SENSCORR filter bank.

The modified file is /opt/rtcds/userapps/release/vis/common/medm/OVERVIEW/VIS_PAYLOAD_IMTM_OVERVIEW.adl.

The original file was backed up as VIS_PAYLOAD_IMTM_OVERVIEW_BAK_20210628.adl in the same directory.

Fig. 1 Shows the modified content. For other suspensions, they should appear white as the channels don't exist, please ignore it. 

I've checked the signals connections and those seem fine. 

Images attached to this comment
satoru.ikeda - 10:28 Tuesday 29 June 2021 (17322) Print this report

The problem in K-Log#17315 was caused by SHMEM being connected to GND and Terminator on the PAYLOAD side.
This is an unnecessary process, so I removed it and updated the model file.

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