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VIS (General)
kouseki.miyo - 1:27 Thursday 04 June 2020 (14469) Print this report
VIS_MANAGER for large earthquake

Nakano, Miyo

I made VIS_MANAGER who manages all guardians of the VIS suspensions when earthquake hit.

Description

  • First, guradstate of the all suspensions are "ALIGNED" or "OBSERVATION".  So, the nominal state of VIS_MANAGER is "ALL_ALIGNED" which is a guradstate to request each suspensions to go "ALIGNED" or "OBSERVATION".
  • When earthquake hit in KAGRA mine, which means three seismometer detect large signal at the same time, VIS_MANAGER move to "EARTHQUAKE" state and immediately request all suspension to go to "PAY_LOCALDAMPED" for safety.
  • After ground motion calm down, VIS_MANAGER goes to "IDLING" state. In this state, VIS_MANAGER do nothing. But, because of the nominal state is "ALL_ALIGNED", VIS_MANAGER move to this state again.
  • Finally, all suspensions come back to "ALIGNED" or "OBSERVATION" state.

 

Now, I engaged this manager guardian.

If you find some bug, please report me.

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