Analysis of Full-Period and Non-full-Period Sampling of Vibration Signal for Engine Rotors
- Jun Pi, Xiangji Bu
- Corresponding Author
- Jun Pi
Available Online November 2015.
- https://doi.org/10.2991/itms-15.2015.121How to use a DOI?
- Vibration signal; full-period sampling; non-full-period sampling; spectral leakage
- 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.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
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 - 2015 International Conference on Industrial Technology and Management Science PB - Atlantis Press SN - 2352-538X UR - https://doi.org/10.2991/itms-15.2015.121 DO - https://doi.org/10.2991/itms-15.2015.121 ID - Pi2015/11 ER -