Title of Paper:Milling cutter condition reliability prediction based on state space model

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Date of Publication:2016-11-01

Journal:JOURNAL OF VIBROENGINEERING

Included Journals:SCIE、EI

Volume:18

Issue:7

Page Number:4312-4328

ISSN No.:1392-8716

Key Words:reliability prediction; state space model; feature extraction; moving average; milling cutter

Abstract:Reliability analysis based on equipment's performance degradation characteristics is one of important research areas for reliability engineering. Many researcher work on multi-sample analysis, but it is limited for single equipment or small sample reliability prediction. Therefore, the method of reliability prediction based on state space model (SSM) is investigated in this research for small sample analysis. Firstly, signals about machine working conditions are collected based on-line monitoring technology. Secondly, wavelet packet energy parameters are determined based on the monitored signals. Frequency band energy is regarded as characteristic parameter. Then, the degradation characteristics of signal to noise ratio is improved by moving average filtering processing. In the end, SSM is established to predict degradation characteristics of probability density distribution, and the degree of reliability is determined. Milling cutter is used to demonstrate the rationality and effectiveness of this method. It can be concluded that this method is effective for milling cutter reliability estimation based on the data analysis. It also contributes to machine condition remaining useful life prediction.