nass-micro-station-measurements/actuators-sensors/index.org

Equipment

• Measurement System / Acquisition System
  • Modal Analysis
• Control System
• Positioning Stages
  • Hexapods
  • Translation/Rotation Stage
• Amplifiers
  • Current Amplifiers
  • Voltage Amplifiers
• ESRF Equipment
  • Geophones
    • L-28LB
    • L-4C
    • L-22
  • Accelerometers
    • Pieozoelectric acc. 356b18 - 3 axis
    • Ceramic acc. 393B05 - 1 axis
  • Modal analysis

Measurement System / Acquisition System

Modal Analysis

https://dewesoft.com/applications/structural-dynamics/modal-analysis Polytec 3D Scanning Laser Vibrometer https://www.polytec.com/us/vibrometry/products/full-field-vibrometers/psv-500-scanning-vibrometer/

Control System

https://www.opal-rt.com/ https://www.speedgoat.com/ https://www.dspace.com/en/inc/home/products/hw/microlabbox.cfm https://www.ni.com/fr-fr/shop/pc-based-measurement-and-control-system.html

Positioning Stages

Hexapods

• https://www.alioindustries.com/
• https://www.symetrie.fr/en/home/
• https://www.physikinstrumente.com/en/products/parallel-kinematic-hexapods/

Translation/Rotation Stage

• https://www.attocube.com/en/products/nanopositioners
• https://www.physikinstrumente.com/en/
• https://www.aerotech.com/
• https://www.etel.ch/

Amplifiers

Current Amplifiers

Voltage Amplifiers

Amplifiers: https://www.cedrat-technologies.com/en/products/piezo-controllers/electronic-amplifier-boards.html

ESRF Equipment

Geophones

L-28LB

• http://www.sercel.com/products/Pages/seismometers.aspx
• Data Sheet.

Picture of the L-28LB Geophone

Natural Frequency [Hz]	4.5
Weight [g]	140
Sensitivity [V/(m/s)]	31.3

L-28LB Parameters

We define the parameters of the geophone and we plot its bode plot (figure fig:L28LB_bode_plot).

  w0 = 4.5*2*pi; % [rad/s]
  ksi = 0.38;
  G0 = 31.3; % [V/(m/s)]
  G = G0*(s/w0)^2/((s/w0)^2 + 2*ksi*(s/w0) + 1);

  <<plt-matlab>>

Bode plot of the L-28LB Geophone

L-4C

• http://www.sercel.com/products/Pages/seismometers.aspx
• Data Sheet.

Picture of the L-4C Geophone

Natural Frequency [Hz]	1
Weight [g]	2150
Sensitivity [V/(m/s)]	276.8

L4C Parameters

The transfer function from the velocity and the measured voltage is defined below.

Its bode plot is shown on figure fig:L4C_bode_plot.

  w0 = 2*pi; % [rad/s]
  ksi = 0.28;
  G0 = 276.8; % [V/(m/s)]
  G = G0*(s/w0)^2/((s/w0)^2 + 2*ksi*(s/w0) + 1);

  <<plt-matlab>>

Bode plot of the L4C Geophone

L-22

• https://www.passcal.nmt.edu/content/instrumentation/sensors/short-period-sensors/l-22-sp-sensor

Accelerometers

Pieozoelectric acc. 356b18 - 3 axis

• https://www.pcbpiezotronics.fr/produit/accelerometres/356b18/
• Data Sheet.

Pieozoelectric acc. 356b18 - 3 axis

Sensitivity	0.102 $V/(m/s^2)$
Measurement Range	4.9 $m/s^2$ pk
Frequency Range	0.5 to 3000 Hz
resonant frequency	> 20000 hz
broadband resolution	0.0005 $m/s^2$ rms

356b18 Parameters

Ceramic acc. 393B05 - 1 axis

• http://www.pcb.com/products.aspx?m=393B05
• Data Sheet.

Ceramic acc. 393B05 - 1 axis

Sensitivity (±10 %)	1.02 $V/(m/s^2)$
Measurement Range	4.9 $m/s^2$ pk
Frequency Range (±5 %)	0.7 to 450 Hz
resonant frequency	> 2500 hz
broadband resolution	0.00004 $m/s^2$ rms

393B05 Parameters

Modal analysis

http://www.oros.com/3900-oros-modal-2.htm