Minutes of the Type-A Meeting on 2016/6/14

2016/6/14 13:00 - 15:00 @ Room 210

Participants: Takahashi, Ishizaki, Sato, Okutomi

Task list

http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4792

Minutes

• 0-1 Assembly model (Ishizaki)
  • Step: From EQ stop, next with chamber.
  0-2 Simulation (Okutomi)
  • Problem: Conversion to Simulink was ok. The structure of control has a problem in Matlab. Reconstructing now.
  3-5 ACC preparation (Sato)
  • Space: Make working space in the 20m lab.
  5-1 Manufacturing of blade (Takahashi)
  • Design: 5 blades are used for 200kg load.
  5-6 Design of damper (Sato)
  • Device: Asking design of LVDT-Act. to VIRGO. The device is located at the center of mass.
  6-1 Design of EQ stop (Ishizaki)
  • Structure analysis: Two cases were calculated. Share stress was 1/6 of limit, and principal stress was 1/7 of limit respectively in the maximum case.
  • Modeling: Making with consideration of procedure and tools.
  • Frame lock: Max. stress was 160MPa with +5mm thickness (limit 180MPa).
  6-4 Design of release sensor (Sato)
  • Position: Inner side of the stage. Need to addtional machining to the EQ stop plate.
  • Electronics: Circuit is simple in the test (handmade).
  8-1 Design of dummy payload (Okutomi, Ishizaki)
  • Condition: 25cm mirror, alignment by moving mass. Make a cartoon.
  • Actuation: Length control is necessary? Check PZT actuator.
  9-1 Test plan: Prepare for 2 sets of release sensors. Check FR for 2 BFs.

Next meeting

2016/6/21 13:00