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DetChar (General)
yoshinori.fujii - 7:52 Friday 30 August 2019 (10210) Print this report
Comment to Noise inverstigation for the SRCL displacement (10209)

A brief check:

  • Concerning the mechanical resonances, the SR suspensions have the following modes at around the frequencies (from 5 to 50Hz), according to the model prediction (ref):
    • at 5 Hz, RM Pitch,
    • at 11 Hz, RM Vertical,
    • at 16 Hz, TM Roll
    • at 50Hz, RM Vertical.
  • About 17Hz, it could be the RM roll mode coupling.
  • about 30 to 35Hz band, it would not be due to a pure mechanical resonance since the suspension does not have resonances at the frequency band.
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