State Monitoring of Lathes Based on Load Current Signal

Yue Ping Yu; Guang Lin Yu; Hong Bin Li; Guo Fu Li

doi:10.4028/www.scientific.net/AMM.201-202.758

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 201-202State Monitoring of Lathes Based on Load Current...

State Monitoring of Lathes Based on Load Current Signal

Abstract:

According to the characteristics of machine tools such as complex driving chain ,weak signal and enclosed housing,this paper takes horizontal lathes as study objects and selects current signal which is easy to sample as the analytical signal.We collect motor load current signals of idling, cylindrical cutting and end cutting processing state in the experiment to process the condition monitoring based on wavelet denoising and wavelet packet transform. We take advantage of the threshold denoising method to reduce noise of load current signal.Then we use time-frequency analysis methods of wavelet packet transform to extract state characteristic quantity and outstand useful information.So in this paper we monitor the working state of lathes based on the unique advantages of wavelet denoising and wavelet packet transform, and this method can be widely used in various fields of state monitoring.

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Periodical:

Applied Mechanics and Materials (Volumes 201-202)

Pages:

758-762

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.201-202.758

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Online since:

October 2012

Authors:

Yue Ping Yu, Guang Lin Yu, Hong Bin Li, Guo Fu Li

Keywords:

Condition Monitoring, Current Signal, Wavelet Denosing, Wavelet Packet Transform

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