Study on vibration and sound signals for fault diagnosis of hoist disc brake system

ABSTRACT

The brake system of a mine hoist is the key component and the last barrier to ensure the safe operation in a mine. Based on the vibration and the sound signals of a test brake system, this paper studied the characteristics of the signals and the relationship between both the signals and tries to propose a new fault diagnosis method for the brake system. First, the vibration and sound signals of the test set-up under different braking conditions at different brake disc rotation speeds were collected. Then, the vibration and sound signals were filtered and reduced by the wavelet packet, and the reconstructed signal eigenvalues were extracted. The results showed that the characteristics of vibration and sound signals in fault state and normal state can be drawn. It shows the combined fault diagnosis method based on vibration and sound signals can see a wide application to the fault diagnosis for mine hoist brake system.

KEYWORDS:

• Mine hoist
• vibration
• sound
• wavelet packet
• time domain
• frequency domain

Acknowledgements

This work was supported by the China National Key R&D Program during the 13th Five-year Plan Period (Grant No. 2016YFC06009007).

Data Availability Statement

The authors confirm that the data supporting the findings of this study are available within its supplementary materials.

Disclosure of potential conflicts of interest

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by the the China National Key Research and Development Program [2016YFC06009007]; the China National Key Research and Development Program [2016YFC0600804].