Fourier Series Analysis of Epicyclic Gearbox Vibration

Journal of Vibration and Acoustics, Transactions of the ASME - Tập 124 Số 1 - Trang 150-153 - 2002
James McNames1
1Department of Electrical & Computer Engineering, Portland State University, Post Office Box 751, Portland, OR 97207-0751

Tóm tắt

Synchronous averaging is difficult to use with epicyclic gear systems because the dominant frequencies are slightly skewed and asymmetrical. This Tech Brief uses Fourier series analysis to add new insight to this phenomenon. The results are illustrated on vibration data recorded from a Cobra AH-1S helicopter gearbox.

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Tài liệu tham khảo

Dousis, Dimitri A., 1992, “A Vibration Monitoring Acquisition and Diagnostic System for Helicopter Drive Train Bench Tests,” 48th Annual Forum Proceedings of the American Helicopter Society, Vol. 1, pp. 355–369.

Ma, J., and Li, C. J., 1996, “Gear Defect Detection Through Model-Based Wideband Demodulation of Vibrations,” Mech. Syst. Signal Process., 10, No. 5, pp. 653–665.

McFadden, P. D., and Smith, J. D., 1985, “An Explanation for the Asymmetry of the Modulation Sidebands About the Tooth Meshing Frequency in Epicyclic Gear Vibration,” Proc. Inst. Mech. Eng., Part C: Mech. Eng. Sci., 199, No. 1, pp. 65–70.