Hydrostatic Bearing System (pumps)

  • LBT Hydrostatic Bearing System Pumps:
    img_0282.jpg

Measurement Info

  • Measurements acquired September 30, 2009

  • NOTE: The forward-sums of the acceleration and displacement spectra are "interesting." Specifically, the contributors to the total RMS motion are different enough in frequency to be suspicious.... Additional measurements will be acquired.

  • Accelerometer orientation (Y-axis) and locations:
    HBS_accelerometer_locations.jpg

Accelerometers

  • Low bandwidth triaxial capacitive accelerometer: PCB 3703G3FD3G, SN3376

  • High bandwidth triaxial shear-type accelerometer: PCB 356B18, SN68994

  • Measured with: HP/Agilent Dynamic Signal Analyzer

Y-axis Measurements Only

Acceleration Power Spectrum
  • PSD of accelation measurement:
    PSD_accel_0.jpg

  • Forward-sum of acceleration PSD:
    FWD_accel_0.jpg

  • PSD of acceleration measurement:
    PSD_accel_1.jpg

  • Forward-sum of acceleration PSD:
    FWD_accel_1.jpg

Estimated Displacement Power Spectrum
  • Estimated displacement PSD:
    PSD_pos_0.jpg

  • Forward-sum of displacement PSD:
    FWD_pos_0.jpg

  • Forward-sum of displacement PSD (separate plots):
    FWD_pos_1.jpg

-- JorgeEsguerra - 04 Dec 2009
I Attachment Action Size Date Who Comment
FWD_accel_0.jpgjpg FWD_accel_0.jpg manage 433 K 16 Oct 2009 - 01:02 UnknownUser Forward-sum of acceleration PSD
FWD_accel_1.jpgjpg FWD_accel_1.jpg manage 199 K 04 Dec 2009 - 01:51 UnknownUser Forward-sum of acceleration PSD
FWD_pos_0.jpgjpg FWD_pos_0.jpg manage 235 K 12 Nov 2009 - 23:32 UnknownUser Forward-sum of displacement PSD
FWD_pos_1.jpgjpg FWD_pos_1.jpg manage 214 K 12 Nov 2009 - 23:33 UnknownUser Forward-sum of displacement PSD (separate plots)
HBS_accelerometer_locations.jpgjpg HBS_accelerometer_locations.jpg manage 94 K 15 Oct 2009 - 23:45 UnknownUser Accelerometer orientation (Y-axis) and locations
HBS_pump_system_figures.zipzip HBS_pump_system_figures.zip manage 963 K 16 Oct 2009 - 01:07 UnknownUser *.zip file with all figures in JPG and Matlab figure formats
PSD_accel_0.jpgjpg PSD_accel_0.jpg manage 233 K 16 Oct 2009 - 01:01 UnknownUser PSD of acceleration measurement
PSD_accel_1.jpgjpg PSD_accel_1.jpg manage 459 K 04 Dec 2009 - 01:49 UnknownUser PSD of acceleration measurement
PSD_pos_0.jpgjpg PSD_pos_0.jpg manage 207 K 12 Nov 2009 - 23:30 UnknownUser Estimated displacement PSD
img_0282.jpgjpg img_0282.jpg manage 5 MB 15 Oct 2009 - 23:39 UnknownUser LBT Hydrostatic Bearing System Pumps
Topic revision: r6 - 04 Dec 2009, JorgeEsguerra
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