Vibration damage analysis of transmission line based on MEMS inertial measurement

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Journal of Vibration and Shock ›› 2020, Vol. 39 ›› Issue (17) : 261-267.

YANG Jinxian1, WANG Mengmeng1, LIU Yipeng2, WANG Yaping1, LI Mingqi1

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Abstract

In order to effectively analyze damage caused by vibration of transmission lines, a vibration damage measurement method based on MEMS inertial measurement was proposed. Firstly, MEMS inertial measurement was used to measure 3-axis accelerations and angular velocities of a transmission line’s motion. To accurately extract motion characteristics of the transmission line, pre-processing these signals was performed through filtering and segmentation, and integration and FFT transform were done for the pre-processed signals to obtain amplitude and frequency of the transmission line translation/rotation. Then, from the perspective of damage energy dissipation, vibration energy dissipation function was constructed by using amplitude and frequency parameters to measure the energy dissipated by material damage in transmission line vibration. Based on the relationship between vibration damage and vibration energy dissipation function, the vibration damage function model was established to calculate damage degree of transmission line. Finally, simulation tests for transmission line vibration damage was designed and performed. Results showed that the established vibration damage function model can accurately reflect damage degree of transmission line; the proposed transmission line’s vibration damage measurement analysis method is effective.

Key words

inertial measurement / lines translation/rotation / amplitude and frequency / damage energy dissipation / vibration damage model

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YANG Jinxian1, WANG Mengmeng1, LIU Yipeng2, WANG Yaping1, LI Mingqi1. Vibration damage analysis of transmission line based on MEMS inertial measurement[J]. Journal of Vibration and Shock, 2020, 39(17): 261-267

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