Parameter Identification for the Impulse Response Signal of Transmission Tower Containing Double Frequencies

DOI

10.2991/ice2me-19.2019.1How to use a DOI?

Keywords

impulse response; parameter identification; vibration

Abstract

Tuned mass damperis designed on transmission towers to reduce vibration. Two new frequencies appear nearby the original natural frequency if the tuned mass damperis installed. The impulse response signal containing double frequencies is complex. It is difficult to identify signal characteristics parameters. We use the Hilbert transform to calculate the envelope of the impulse signal. We find that curves consisting of peak points and valley points on the envelope signal correspond to the sum and difference of the exponential decay signals of two harmonic components, respectively. The exponential decay signals of two harmonic components can be obtained from these two curves. We reconstructed two impulse signal susing the harmonic frequencies and the exponential decay signals. The cross correlation coefficients between the two reconstructed signals and the original impulse response signals are calculated and the best match is found. Then, the characteristic parameters of two harmonic components are calculated. The reliability of the method is studied by numerical simulation. The method was used for parameter identification of transmission tower containing tuned mass damper.

Copyright

© 2019, 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  - Qingshui Gao
AU  - Yi Yang
AU  - Chu Zhang
PY  - 2019/03
DA  - 2019/03
TI  - Parameter Identification for the Impulse Response Signal of Transmission Tower Containing Double Frequencies
BT  - Proceedings of the 2019 International Conference on Electronical, Mechanical and Materials Engineering (ICE2ME 2019)
PB  - Atlantis Press
SP  - 1
EP  - 5
SN  - 2352-5401
UR  - https://doi.org/10.2991/ice2me-19.2019.1
DO  - 10.2991/ice2me-19.2019.1
ID  - Gao2019/03
ER  -