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Research on key technologies for micro-vibration measurement and evaluation
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Xinyun XU1, Xuwen CHEN2, Zhangwei CHEN1
Journal of Vibration Engineering | 2025, 38(9) : 2023 - 2032
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Journal of Vibration Engineering | 2025, 38(9): 2023-2032
Research on key technologies for micro-vibration measurement and evaluation
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Xinyun XU1, Xuwen CHEN2, Zhangwei CHEN1
Affiliations
  • 1.State Key Laboratory of Fluid Power & Mechatronic Systems, Zhejiang University, Hangzhou 310000, China
  • 2.Econ Technologies Co., Ltd., Hangzhou 310000, China
Published: 2025-09-10 doi: 10.16385/j.cnki.issn.1004-4523.202309068
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Environmental microvibration affects the accuracy of precision instruments, making microvibration measurement and assessment crucial. Microvibration level measurement is based on the octave spectrum of the velocity signal. However, the frequency-domain FFT method used in traditional octave analysis suffers from shortcomings such as fixed resolution and low-frequency spectrum leakage. Therefore, a complex-analysis ZFFT correction algorithm based on ratio correction was proposed. Simulations show that this algorithm improves spectral resolution while maintaining the same number of FFT analysis points. While maintaining the same number of sampling points, the computational effort is significantly reduced, and the spectrum amplitude error is as low as one thousandth. Frequency-band octave analysis is employed to suppress low-frequency spectrum leakage and increase the number of spectral lines. A microvibration monitoring and analysis system was developed, comprising a low-frequency microvibration sensor, the MI-7208 intelligent measurement device, and microvibration level measurement and assessment software. Field measurements verified the system's ability to detect VC-F-level microvibration signals and its long-term measurement stability.

spectrum refinement and correction  /  octave analysis  /  environmental micro-vibration  /  micro-vibration level evaluation
Xinyun XU, Xuwen CHEN, Zhangwei CHEN. Research on key technologies for micro-vibration measurement and evaluation[J]. Journal of Vibration Engineering, 2025 , 38 (9) : 2023 -2032 . DOI: 10.16385/j.cnki.issn.1004-4523.202309068
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Year 2025 volume 38 Issue 9
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Article Info
doi: 10.16385/j.cnki.issn.1004-4523.202309068
  • Receive Date：2023-09-24
  • Online Date：2026-02-09
  • Published：2025-09-10
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History
  • Received：2023-09-24
  • Revised：2023-12-18
Affiliations
    1.State Key Laboratory of Fluid Power & Mechatronic Systems, Zhejiang University, Hangzhou 310000, China
    2.Econ Technologies Co., Ltd., Hangzhou 310000, China
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多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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