謝秀嫻，付攀，曹偉青
（西南交通大學，四川 成都 610031）
摘要：隨著現(xiàn)代加工工業(yè)的發(fā)展，對刀具磨損的監(jiān)測在保障生產安全和產品質量中發(fā)揮著越來越重要的作用。聲發(fā)射技術是刀具磨損監(jiān)測的一種新方法。在車削加工過程中采集聲發(fā)射信號，用聲發(fā)射信號對刀具磨損狀態(tài)進行識別。利用小波包分解技術對信號進行分析，得到有效的特征量作為BP神經網(wǎng)絡的輸入樣本，并對網(wǎng)絡進行學習訓練，完成對刀具磨損狀態(tài)的有效識別。
關鍵詞：刀具磨損；聲發(fā)射；小波包分析；神經網(wǎng)絡
中圖分類號：TP206＋.1 文獻標識碼：A 文章編號：1672-4984(2006)02-0040-03
Acoustic emission and wavelet analysis-based estimation of tool wear
XIE Xiu-xian,FU Pan,CAO Wei-qing
(Southwest Jiaotong University, Chengdu 610031，China)
Abstract：Accompanied with the development of modern machining industry, tool wear monitoring becomes more and more important. Acoustic Emission (AE) is a useful and effective technique in tool wear monitoring. This paper uses Daubechies Wavelet to analyze AE signal and select features of the tools. The selected features are then considered as inputs to BP neural network to complete recognition of the status of the cutting tool.
Key words：Tool wear; Acoustic emission; Wavelet analysis; Neural network
