Hydrostatic Bearing System

  • HBS system:
    img_0282.jpg

  • Location: LBT Room 402

Measurement Info

  • Measurements acquired October 25, 2009

  • Acceleromter orientation:
    accel_orientation.jpg

  • Two 1-kHz, 100-second data sets at indicated location:

  • Acceleration data high-pass filtered at 0.1-Hz or 1.0-Hz during post-processing to supress low frequency drift in integrated data (velocity, displacement)

  • Bode plot of 4-pole high-pass filters (0.1-Hz, 1.0-Hz):

high_pass_bode.jpg

Accelerometers

  • PCB 356B18 (serial number 36120) triaxial shear-type accelerometer

  • PCB 356B18 (serial number 87536) triaxial shear-type accelerometer

  • Measured with UEI DNA-PPC5 data acquisition system with UEI DNX-AI-207 analog input card

Time History

  • Time history (1-kHz, 90-seconds):
    time_history_00.jpg

  • Time history (1-kHz, 10-seconds):
    time_history_01.jpg

X-axis

Acceleration Spectral Density

  • Acceleration PSD, X-Axis:
    Paa_x00.jpg

  • Acceleration PSD forward-sum, X-axis:
    fwd_Paa_x00_hp0_1.jpg

Estimated Displacement Spectral Density (with 0.1-Hz high-pass filter)

  • Displacement PSDs, X-axis:
    Pxx_x00.jpg

  • Displacement PSD forward-sum, X-axis:
    fwd_Pxx_x00_hp0_1.jpg

Estimated Displacement Spectral Density (with 1-Hz high-pass filter)

  • Displacement PSD, X-Axis (1-Hz high-passed acceleration):
    Pxx_x01.jpg

  • Displacement PSD forward-sum, X-Axis (1-Hz high-passed acceleration):
    fwd_Pxx_x00_hp1_0.jpg

Y-Axis Measurements (Up)

Acceleration Spectral Density

  • Acceleration PSD, Y-Axis:
    Paa_y00.jpg

  • Acceleration PSD forward-sum, Y-axis:
    fwd_Paa_y00_hp0_1.jpg

Estimated Displacement Spectral Density (with 0.1-Hz high-pass filter)

  • Displacement PSDs, Y-axis:
    Pxx_y00.jpg

  • Displacement PSD forward-sum, Y-axis:
    fwd_Pxx_y00_hp0_1.jpg

Estimated Displacement Spectral Density (with 1-Hz high-pass filter)

  • Displacement PSD, Y-Axis (1-Hz high-passed acceleration):
    Pxx_y01.jpg

  • Displacement PSD forward-sum, Y-Axis (1-Hz high-passed acceleration):
    fwd_Pxx_y00_hp1_0.jpg

Z-Axis Measurements

Acceleration Spectral Density

  • Acceleration PSD, Z-Axis:
    Paa_z00.jpg

  • Acceleration PSD forward-sum, Z-axis:
    fwd_Paa_z00_hp0_1.jpg

Estimated Displacement Spectral Density (with 0.1-Hz high-pass filter)

  • Displacement PSDs, Z-axis:
    Pxx_z00.jpg

  • Displacement PSD forward-sum, Z-axis:
    fwd_Pxx_z00_hp0_1.jpg

Estimated Displacement Spectral Density (with 1-Hz high-pass filter)

  • Displacement PSD, Z-Axis (1-Hz high-passed acceleration):
    Pxx_z01.jpg

  • Displacement PSD forward-sum, Y-Axis (1-Hz high-passed acceleration):
    fwd_Pxx_z00_hp1_0.jpg

-- JorgeEsguerra - 13 Nov 2009

I Attachment Action Size Date Who Comment
DNA_PPC5_002_data.txttxt DNA_PPC5_002_data.txt manage 9 MB 13 Nov 2009 - 21:33 UnknownUser 1-kHz, 100-seconds raw Voltage data; (set 1 of 2 at this location)
DNA_PPC5_003_data.txttxt DNA_PPC5_003_data.txt manage 9 MB 13 Nov 2009 - 21:34 UnknownUser 1-kHz, 100-seconds raw Voltage data; (set 2 of 2 at this location)
HBS_01.zipzip HBS_01.zip manage 45 MB 13 Nov 2009 - 22:03 UnknownUser zip archive with all plots in jpg and fig, Matlab workspace and raw data.
Paa_x00.jpgjpg Paa_x00.jpg manage 436 K 13 Nov 2009 - 21:34 UnknownUser Acceleration PSD, X-Axis
Paa_y00.jpgjpg Paa_y00.jpg manage 435 K 13 Nov 2009 - 21:35 UnknownUser Acceleration PSD, Y-Axis
Paa_z00.jpgjpg Paa_z00.jpg manage 436 K 13 Nov 2009 - 21:35 UnknownUser Acceleration PSD, Z-Axis
Pxx_x00.jpgjpg Pxx_x00.jpg manage 230 K 13 Nov 2009 - 21:39 UnknownUser Displacement PSDs, X-axis
Pxx_x01.jpgjpg Pxx_x01.jpg manage 228 K 13 Nov 2009 - 21:52 UnknownUser Displacement PSD, X-Axis (1-Hz high-passed acceleration)
Pxx_y00.jpgjpg Pxx_y00.jpg manage 228 K 13 Nov 2009 - 21:39 UnknownUser Displacement PSDs, Y-axis
Pxx_y01.jpgjpg Pxx_y01.jpg manage 227 K 13 Nov 2009 - 21:53 UnknownUser Displacement PSD, Y-Axis (1-Hz high-passed acceleration)
Pxx_z00.jpgjpg Pxx_z00.jpg manage 230 K 13 Nov 2009 - 21:39 UnknownUser Displacement PSDs, Z-axis
Pxx_z01.jpgjpg Pxx_z01.jpg manage 228 K 13 Nov 2009 - 21:53 UnknownUser Displacement PSD, Z-Axis (1-Hz high-passed acceleration)
accel_orientation.jpgjpg accel_orientation.jpg manage 89 K 13 Nov 2009 - 23:03 UnknownUser Acceleromter orientation
fwd_Paa_x00_hp0_1.jpgjpg fwd_Paa_x00_hp0_1.jpg manage 415 K 13 Nov 2009 - 21:36 UnknownUser Acceleration PSD forward-sum, X-axis
fwd_Paa_y00_hp0_1.jpgjpg fwd_Paa_y00_hp0_1.jpg manage 430 K 13 Nov 2009 - 21:37 UnknownUser Acceleration PSD forward-sum, Y-axis
fwd_Paa_z00_hp0_1.jpgjpg fwd_Paa_z00_hp0_1.jpg manage 430 K 13 Nov 2009 - 21:38 UnknownUser Acceleration PSD forward-sum, Z-axis
fwd_Pxx_x00_hp0_1.jpgjpg fwd_Pxx_x00_hp0_1.jpg manage 381 K 13 Nov 2009 - 21:41 UnknownUser Displacement PSD forward-sum, X-axis
fwd_Pxx_x00_hp1_0.jpgjpg fwd_Pxx_x00_hp1_0.jpg manage 308 K 13 Nov 2009 - 21:54 UnknownUser Displacement PSD forward-sum, X-Axis (1-Hz high-passed acceleration)
fwd_Pxx_y00_hp0_1.jpgjpg fwd_Pxx_y00_hp0_1.jpg manage 380 K 13 Nov 2009 - 21:41 UnknownUser Displacement PSD forward-sum, Y-axis
fwd_Pxx_y00_hp1_0.jpgjpg fwd_Pxx_y00_hp1_0.jpg manage 346 K 13 Nov 2009 - 21:54 UnknownUser Displacement PSD forward-sum, Y-Axis (1-Hz high-passed acceleration)
fwd_Pxx_z00_hp0_1.jpgjpg fwd_Pxx_z00_hp0_1.jpg manage 378 K 13 Nov 2009 - 21:42 UnknownUser Displacement PSD forward-sum, Z-axis
fwd_Pxx_z00_hp1_0.jpgjpg fwd_Pxx_z00_hp1_0.jpg manage 307 K 13 Nov 2009 - 21:55 UnknownUser Displacement PSD forward-sum, Y-Axis (1-Hz high-passed acceleration)
high_pass_bode.jpgjpg high_pass_bode.jpg manage 270 K 17 Nov 2009 - 23:38 UnknownUser Bode plot of high-pass filters (0.1-Hz, 1.0-Hz)
img_0282.jpgjpg img_0282.jpg manage 5 MB 16 Nov 2009 - 21:10 UnknownUser HBS system
time_history_00.jpgjpg time_history_00.jpg manage 273 K 13 Nov 2009 - 22:07 UnknownUser Time history (1-kHz, 90-seconds)
time_history_01.jpgjpg time_history_01.jpg manage 339 K 13 Nov 2009 - 22:08 UnknownUser Time history (1-kHz, 10-seconds)
Topic revision: r3 - 17 Nov 2009, JorgeEsguerra
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