Differences between revisions 48 and 49
⇤ ← Revision 48 as of 2017-10-30 14:24:58 →
Size: 4686
Editor: KokiOkutomi
Comment:
← Revision 49 as of 2017-11-02 13:13:20 → ⇥
Size: 4695
Editor: KokiOkutomi
Comment:
Deletions are marked like this. Additions are marked like this.
Line 10: Line 10:
 * ACC H1 (SN7): -5.288 [(um/s^2)/cnt]
 * ACC H2 (SN8): 5.830 [(um/s^2)/cnt]
 * ACC H3 (SN5): -5.289 [(um/s^2)/cnt]		 || || Calibration [(um/s^2)/cnt] ||
|| ACC H1 (SN7) || -5.288 ||
|| ACC H2 (SN8) || 5.830 ||
|| ACC H3 (SN5) || -5.289 ||

Type-A Tower ETMX Specification

Contents

  1. Type-A Tower ETMX Specification
    1. IP
      1. Accelerometer (ACC)
      2. LVDT
      3. Actuator polarization
      4. Diagonalization matrix
    2. GAS
      1. LVDT
      2. Movable range by Fishing Rod
    3. BF
      1. LVDT (BF Damper)
      2. Actuator polarization
      3. Diagonalization matrix

IP

Ifconfig_ETMXv1.png

Accelerometer (ACC)

|| || Calibration [(um/s^2)/cnt] ||

ACC H1 (SN7)

-5.288

ACC H2 (SN8)

5.830

ACC H3 (SN5)

-5.289

calibACC_sn7_20171016.png calibACC_sn8_20171016.png calibACC_sn5_20171017.png

LVDT

  • LVDT H1: -0.258 [um/cnt]
  • LVDT H2: -0.252 [um/cnt]
  • LVDT H3: -0.233 [um/cnt]

calibLVDT_ETMX_IPH1_20171012.png calibLVDT_ETMX_IPH2_20171012.png calibLVDT_ETMX_IPH3_20171012.png

Actuator polarization

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

Diagonalization matrix

  • ACC2EUL

H1

H2

H3

To:

0.6440

-0.1726

-0.4714

Long.

0.1726

-0.6440

0.4714

Trans.

0.6833

0.6833

0.6833

Yaw

  • LVDT2EUL

H1

H2

H3

To:

0.6666

-0.3333

-0.3333

Long.

0

-0.5774

0.5774

Trans.

0.5612

0.5612

0.5612

Yaw

  • EUL2COIL

Long.

Trans.

Yaw

To:

1.

0

0.5940

H1

-0.5000

-0.8660

0.5940

H2

-0.5000

0.8660

0.5940

H3

GAS

LVDT

  • F0 LVDT GAS: -0.172 [um/cnt]
  • F1 LVDT GAS: -0.215 [um/cnt]
  • F2 LVDT GAS: -0.243 [um/cnt]
  • F3 LVDT GAS: -0.225 [um/cnt]
  • BF LVDT GAS: 0.204 [um/cnt]

calibLVDT_ETMX_F0GAS20171012.png calibLVDT_ETMX_F1GAS20170907.png calibLVDT_ETMX_F2GAS20170822.png

calibLVDT_ETMX_F3GAS20170803.png calibLVDT_ETMX_BFGAS20170725.png

Movable range by Fishing Rod

  • F0 GAS:
  • F1 GAS:
  • F2 GAS:
  • F3 GAS:
  • BF GAS: full range (11 mm)

BF

BFconfig_ETMX.png

LVDT (BF Damper)

  • LVDT V1: -0.3785 [um/cnt]
  • LVDT V2: -0.3852 [um/cnt]
  • LVDT V3: 0.3902 [um/cnt]
  • LVDT H1: 0.4060 [um/cnt]
  • LVDT H2: -0.3821 [um/cnt]
  • LVDT H3: -0.3629 [um/cnt]

Note: Polarity may change when connecting the secondary coil to the cable. This configuration is confirmed on [2017.10.27] (It will change after the cable replacement scheduled in November 2017.)

calibLVDT_ETMX_BFV1_20170802.png calibLVDT_ETMX_BFV2_20170802.png calibLVDT_ETMX_BFV3_20170803.png

calibLVDT_ETMX_BFH1_20170802.png calibLVDT_ETMX_BFH2_20170802.png calibLVDT_ETMX_BFH3_20170802.png

Actuator polarization

Polarity is determined so that an +offset at the COILOUTF applies +yaw force in each actuator.

  • COIL V1: ???
  • COIL V2: ???
  • COIL V3: ???
  • COIL H1: positive
  • COIL H2: negative
  • COIL H3: negative

Note: Polarity may change when connecting the secondary coil to the cable. This configuration is confirmed on [2017.10.27]

Diagonalization matrix

  • LVDT2EUL

V1

V2

V3

H1

H2

H3

To:

0

0

0

-0.5774

0

0.5774

Long.

0

0

0

-0.3333

0.6666

-0.3333

Trans.

0.3333

0.3333

0.3333

0

0

0

Vert.

0

1.5861

-1.5861

0

0

0

Roll

1.8315

-0.9158

-0.9158

0

0

0

Pitch

0

0

0

0.8170

0.8170

0.8170

Yaw

  • EUL2COIL

L

T

V

R

P

Y

To:

0

0

1.

0

0.3640

0

V1

0

0

1.

0.3152

-0.1820

0

V2

0

0

1.

-0.3152

-0.1820

0

V3

-0.8660

-0.5000

0

0

0

0.4080

H1

0

1.

0

0

0

0.4080

H2

0.8660

-0.5000

0

0

0

0.4080

H3

KAGRA/Subgroups/VIS/TypeA/ETMX (last edited 2022-03-07 11:29:59 by hiromi.yasui)