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Comment:
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| Deletions are marked like this. | Additions are marked like this. |
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| == actuation efficiency == | == actuation polarization == |
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| Polarity is determined so that an +offset at the COILOUTF applies +yaw force in each actuator. * COIL H1: negative * COIL H2: negative * COIL H3: positive |
''TM-srage'' || COIL || sign || || TM-H1 || || || TM-H2 || || || TM-H3 || || || TM-H4 || || |
| Line 81: | Line 83: |
| ''IM-srage'' | |
| Line 109: | Line 112: |
| == actuation efficiency == | |
| Line 110: | Line 114: |
| === Stepper motor === | == Stepper motor == |
SR3 suspension information
position
FARO measurement
GAS default height (LVDT readout)
- BF GAS LVDTIN:
- F1 GAS LVDTIN:
- F0 GAS LVDTIN:
suspension parameters
resonant frequencies
position of the COM
calculated from the resonant frequencies.
sensor & actuator parameters
Oplev calibration
OSEM calibration
GAS-LVDT calibration
IP-LVDT calibration
Sensor |
Efficiency [um/cnt] |
LVDT H1 |
|
LVDT H2 |
|
LVDT H3 |
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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 |
# |
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GEO H2 |
# |
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GEO H3 |
# |
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Noise
Sensor |
Noise [m/rtHz] @ 0.1 Hz |
Noise [m/rtHz] @ 10 Hz |
GEO H1 |
|
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GEO H2 |
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GEO H3 |
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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-srage
COIL |
sign |
TM-H1 |
|
TM-H2 |
|
TM-H3 |
|
TM-H4 |
|
IM-srage
COIL |
sign |
TM-H1 |
|
TM-H2 |
|
TM-H3 |
|
TM-H4 |
|
Diagonalization matrix
- ACC2EUL
H1 |
H2 |
H3 |
To: |
** |
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** |
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** |
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- LVDT2EUL
H1 |
H2 |
H3 |
To: |
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Long. |
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Trans. |
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Yaw |
- EUL2COIL
Long. |
Trans. |
Yaw |
To: |
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|
H1 |
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H2 |
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|
H3 |
actuation efficiency
Stepper motor
See also: Stepper motor setup
Epics channel name: K1:STEPPER_***_IP |
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Driver IP address: 10.68.150.** |
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Motor 0 |
Motor 1 |
Motor 2 |
Motor 3 |
Motor 4 |
Motor 5 |
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