結合時頻分析與統計製程管制於研磨狀態診斷

Combining Time-frequency Analysis and Statistical Process Control in Condition Diagnosis of Grinding

方俊傑(Jun-Jie Fang)

指導教授 ： 康淵 ； 張永鵬

中原大學/工學院/機械工程研究所/碩士(2012年)

https://doi.org/10.6840/cycu201201056

摘要

本文主要研究平面磨床之振動信號與工件表面品質之關係。將平面磨床之振動信號以統計特徵參數分析，萃取工件完工品質狀態及機台研磨狀態之統計特徵參數，將各種工件完工品質狀態，例如鏡面、霧面、刮傷、顫紋及燒傷之統計特徵參數樣本建立於狀態資料庫，並代入統計製程管制以其統計管制圖、分佈圖及直方圖作狀態分類及診斷。
最後以LabVIEW軟體撰寫虛擬儀器系統、人機介面操作模組、信號採集及信號分析模組，以N I 9174模組進行硬體設定，且透過LabVIEW軟體整合於網路化智能加工監控系統建置於平面磨床主軸上，量測平面磨床之加工信號作時頻分析萃取工件完工狀態及機台加工統計特徵參數，將各種工件完工品質狀態，以統計製程管制圖、分佈圖及直方圖，圖形化顯示於人機介面，作研磨加工過程之即時監控及完工表面狀態之分類及診斷。

關鍵字

智能加工監控系統 ； 時頻分析 ； 統計製程管制 ； 平面磨床

並列摘要

This paper studies the relationship between surface grinding machine vibration signals with the workpiece surface quality. Surface grinding machine vibration signal analysis, the completion of the extraction workpiece quality status and grinding machine state of the statistical characteristics of parameters, a variety of workpiece quality of completion status, such as mirror, scratches, flutter pattern, matte, and burn the statistical characteristics of the statistical characteristics of parameters The parameters of the sample in the state database, and into the statistical process control statistical control charts, maps and histograms for state classification and diagnosis. Finally, written with LabVIEW software virtual instrument system, man-machine interface operation module, signal acquisition and signal analysis module, the NI 9174 module hardware settings, and integrated Web-based intelligent process monitoring system through the LabVIEW software to build surface grinding machine spindle, the processed signal of the measuring surface grinder for extraction job completion status and machine processing statistical characteristics of parameters, a variety of workpiece quality of completion status, and statistical process control charts, maps and histograms, graphical display of time-frequency analysis man-machine interface for real-time monitoring of the grinding process and completion of the surface state of classification and diagnosis.

並列關鍵字

Short-Time Fourier Transform ； Statistical Process Control(SPC) ； Intelligent processing of the monitoring system ； Surface grinder

參考文獻

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