Differential measurements using two laser rotational vibrometers dynamic backlash.pdf (378.3 kB)
Differential measurements using two Laser Rotational Vibrometers: dynamic backlash
conference contribution
posted on 2015-12-03, 15:02 authored by Peter Martin, Steve RothbergThe Laser Rotational Vibrometer is well suited to non-contact measurement of angular vibration on rotating targets,
particularly by virtue of inherent insensitivity to target shape and translational motion. A differential measurement is
proposed using two Vibrometers to allow a calculation of dynamic backlash between spur gears from relative tangential
displacements. It is known that target motions, such as rotation, produce changes in the speckle pattern on the
photodetector which add noise to the Vibrometer output. The significance of noise is always increased when differential
measurements are required. The noise produced by the speckle pattern is apparent but the data reveals that it is possible
to make the dynamic backlash measurement in this way. The dynamic backlash measurement is verified against
equivalent high speed video footage, confirming the suitability of Laser Vibrometry in this application.
Funding
The authors would like to acknowledge the Engineering and Physical Sciences Research Council (EPSRC) for financial support.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
7th International Conference on Vibration Measurements by Laser Techniques Seventh International Conference on Vibration Measurements by Laser Techniques: Advances and ApplicationsVolume
6345Pages
N3450 - N3450 (9)Citation
MARTIN, P. and ROTHBERG, S., 2006. Differential measurements using two Laser Rotational Vibrometers: dynamic backlash. IN: Proceedings of SPIE, vol 6345, Seventh International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, 21st June 2006, Ancona, Italy, pp. 63450N-1 - 63450N-9.Publisher
© Society of Photo-Optical Instrumentation Engineers (SPIE)Version
- VoR (Version of Record)
Publication date
2006Notes
Copyright 2006 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.ISBN
081946421XISSN
0277-786XPublisher version
Language
- en