研究生: |
梁勤萱 Chin-Hsuan Liang |
---|---|
論文名稱: |
結合時間序列及監督式學習方法於預測性維護模型之研究-以液壓機健康狀態預測為例 Predictive Maintenance Model Based on Fusion of Time Series and Supervised Learning Methods - A Case Study of Hydraulic Machine Health Status Prediction |
指導教授: |
楊朝龍
Chao-Lung Yang |
口試委員: |
歐陽超
Chao Ou-Yang 郭人介 Ren-Jieh Kuo |
學位類別: |
碩士 Master |
系所名稱: |
管理學院 - 工業管理系 Department of Industrial Management |
論文出版年: | 2019 |
畢業學年度: | 107 |
語文別: | 中文 |
論文頁數: | 56 |
中文關鍵詞: | 預測性維護 、數據導向技術 、時間序列預測 、融合模型 |
外文關鍵詞: | Predictive Maintenance, Data-driven Techniques, Time Series Forecasting Method, Fusion Model |
相關次數: | 點閱:328 下載:0 |
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預測性維護(Predictive Maintenance)是工業生產中很重要的一項發展課題,有別於其他應用機器學習技術純粹以達到準確度的最大化,在機台健康狀態預測中,除了準確率的提升,同時能夠得知機台何處損壞而造成整體健康狀態下降也是非常重要的課題。本研究欲探討機台健康狀態以特定模式變動的情況下(其中包含固定的維修模式或是固定的衰退周期),使用機台中安裝於不同部件的偵測器收集之資料以及健康狀態時間序列資料,建立以時間序列預測方法和數據導向技術(Data-Driven Techniques)結合之通用預測性維護模型框架。透過以時間序列預測方法結合多種不同的數據導向分析技術之結果比較,本研究提出以融合模型(Fusion Model)的方式來提升整體準確率,並保留其初始模型可探討各特徵影響程度之特性。本研究進而探討資料收集的程度是否足以使得時間序列模型有良好的運算效果,並能夠在預測性維護模型應用初期透過監督式學習模型與時間序列模型兩者的融合,調整其資訊應用的比重。研究結果發現透過融合方式使得小數據也可能達到最佳的預測效果以利工廠後續排定生產維修計畫以及零件備品採購決策。
Among the topics in industrial data analytics, one of the important topics is predictive maintenance. Predictive maintenance mainly focuses on the traceability of where the machine is broken or needed to maintain based on the improved prediction accuracy on the sensor data from machines or devices. In previous research works, time series data analysis of the health status of the machine under fixed maintenance mode or fixed recession cycle are studied. In this research, the proposed data fusion model is expected to improve the overall accuracy through the combination of the results and various-data driven technologies with the time series prediction method. At the same time, the size of data collection is an important factor to make the time series model have good quality. Moreover, the property of the initial model to explore the influence degree of each feature is used to facilitate the subsequent scheduling of production and maintenance plans. The experimental result shows that the proposed fusion model can provide a better maintenance decision making on the machine/device maintenance plan based on the relative small or not complete data.
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