Analysis of Full-Period and Non-full-Period Sampling of Vibration Signal for Engine Rotors

DOI

10.2991/itms-15.2015.121How to use a DOI?

Keywords

Vibration signal; full-period sampling; non-full-period sampling; spectral leakage

Abstract

In this paper, some main software implementations concerning full-period sampling and non-full-period sampling are cited. Re-sampling technique based on cubic spline interpolation and harmonic analysis algorithm are representative methods of respectively full-period sampling and non-full-period sampling. The advantages and limitations of the two methods are compared by means of MATLAB simulation and experiment. Analysis of results finds that the re-sampling technique can completely restore the periodical signals and effectively avoid spectral leakage and fence effect, but it needs a large amount of operations. When synchronous error is considerable the compute of period can be inaccurate. Harmonic analysis algorithm of non-full-period sampling can avoid spectral leakage caused by synchronization error and has a great tolerance for deviation. Moreover, it can make the harmonic analysis surpass the Shannon theorem. However, it can only analyze integer multiple frequency signal.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jun Pi
AU  - Xiangji Bu
PY  - 2015/11
DA  - 2015/11
TI  - Analysis of Full-Period and Non-full-Period Sampling of Vibration Signal for Engine Rotors
BT  - Proceedings of the 2015 International Conference on Industrial Technology and Management Science
PB  - Atlantis Press
SP  - 503
EP  - 506
SN  - 2352-538X
UR  - https://doi.org/10.2991/itms-15.2015.121
DO  - 10.2991/itms-15.2015.121
ID  - Pi2015/11
ER  -