Differences between revisions 12 and 13
 ⇤ ← Revision 12 as of 2018-04-29 14:14:07 → Size: 5451 Editor: YoshinoriFujii Comment: ← Revision 13 as of 2018-04-29 14:15:29 → ⇥ Size: 5451 Editor: YoshinoriFujii Comment: Deletions are marked like this. Additions are marked like this. Line 49: Line 49: {{attachment:sr3imv1osem.png||width=33%,align="left"}}{{attachment:sr3imv2osem.png||width=33%,align="center"}}{{attachment:sr3imv3osem.png||width=33%,align="right"}} {{attachment:sr3imh1osem.png||width=33%,align="left"}}{{attachment:sr3imh2osem.png||width=33%,align="center"}}{{attachment:sr3imh3osem.png||width=33%,align="right"}}

SR3 suspension information

# position

## GAS default height (LVDT readout)

• BF GAS LVDTIN:
• F1 GAS LVDTIN:
• F0 GAS LVDTIN:

# suspension parameters

## position of the COM

calculated from the resonant frequencies.

# sensor & actuator parameters

## OSEM calibration

IM-stage

 number# for which? linear range [cnt] calibration factor [um/cnt] noise level at 10 Hz No#53 IM-V1 0.078991 1600-12500 No#54 IM-V2 0.079014 1480-12600 No#55 IM-V3 0.083248 1500-12000 No#56 IM-H1 0.074347 1390-14200 No#57 IM-H2 0.070756 1370-14700 No#58 IM-H3 0.088711 1450-11100

## GAS-LVDT calibration

• GAS optimal load without their caps

 GAS name optimal frequency optimal load optimal height of the keystone LVDT linear range? Fishing rod range? Note TF SF-B2-6 0.32 Hz 166.40 kg 67.8 mm 64[mm] to 66.5[mm] 63.5[mm] to 67.5[mm] BF-No7 0.39 Hz 53.17 kg 64.9 64[mm] to 66.5[mm] 64.2[mm] to 66.5[mm]
 Sensor Efficiency [um/cnt] F0-LVDT SF-LVDT 0.08845 BF-LVDT 0.05497

## IP-LVDT calibration

 Sensor Efficiency [um/cnt] LVDT H1 LVDT H2 LVDT H3

## Geophone calibration

#### Frequency response

Geophone's frequency response to the ground velocity:

• Ge: Generator constant [V/(m/s)]
• η: Intrinsic damping ratio
• ω0: Resonant angular frequency [rad/s]
 Sensor S/N Generator constant (nominal) [V/(m/s)] Damping ratio (estimated) Resonant frequency [Hz] GEO H1 # GEO H2 # GEO H3 #

#### Noise

 Sensor Noise [m/rtHz] @ 0.1 Hz Noise [m/rtHz] @ 10 Hz GEO H1 GEO H2 GEO H3

#### Calibration

• Converted displacement [um] = 3.052 x 10-4 [V/cnt] / HGEO(ω) / (gainPreamp) x (DC cutoff) x 1/s (m/(m/s)) x 106

## actuation polarization

TM-stage

 COIL sign H1 H2 H3 H4

IM-stage

 COIL sign H1 H2 H3 V1 V2 V3

IP-stage

 COIL sign H1 H2 H3

### Diagonalization matrix

• ACC2EUL
 H1 H2 H3 To: ** ** **
• LVDT2EUL
 H1 H2 H3 To: Long. Trans. Yaw
• EUL2COIL
 Long. Trans. Yaw To: H1 H2 H3