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Tool wear forecast using Dominant Feature Identification of acoustic emissions

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4 Author(s)
Chee Khiang Pang ; Department of Electrical and Computer Engineering, National University of Singapore, Singapore ; Jun-Hong Zhou ; Zhao-Wei Zhong ; Frank L. Lewis

Identification and online prediction of lifetime of cutting tools using cheap sensors is crucial to reduce production costs and down-time in industrial machines. In this paper, we use the acoustic emission from an embedded sensor for computation of features and prediction of tool wear. A reduced feature subset which is optimal in both estimation and clustering least square errors is then selected using a new Dominant Feature Identification (DFI) algorithm to reduce signal processing and number of sensors required. Tool wear is then predicted using an ARMAX model based on the reduced features. Our experimental results on a ball nose cutter in a high speed milling machine show a reduction in 16.83% in mean relative error when compared to other methods proposed in the literature.

Published in:

2010 IEEE International Conference on Control Applications

Date of Conference:

8-10 Sept. 2010