| 研究生: |
李彥樂 Li, Yen-le |
|---|---|
| 論文名稱: |
應用灰色理論於新產品工時量測之研究-以TFT-LCD產業為例 A Study on Time Measurement of New Product Using Grey Theory –The Case of TFT-LCD Industry |
| 指導教授: |
蔡長鈞
Tsai, Chang-chun |
| 學位類別: |
碩士 Master |
| 系所名稱: |
管理學院 - 工業與資訊管理學系 Department of Industrial and Information Management |
| 論文出版年: | 2008 |
| 畢業學年度: | 96 |
| 語文別: | 中文 |
| 論文頁數: | 70 |
| 中文關鍵詞: | 工時量測 、指數平滑法 、灰關聯 、灰預測 、灰色理論 |
| 外文關鍵詞: | grey forecasting, grey relational analysis, exponential smoothing method, grey theory, tact time |
| 相關次數: | 點閱:139 下載:0 |
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本研究將以灰色理論中灰關聯法及灰預測法為主,以南部某電子公司之模組製程LCM廠為例,利用灰關聯法分析各生產站點生產時間穩定性之優序排列,再利用灰預測法GM(1,1)模型、GM(1,1)Alpha修正模型,以及指數平滑法,建立其產品量測工時之預測模式並進行比較,找出最適宜之工時預測方法,當有新產品需生產時,不需重新量測工時,只需根據其機種類型,選擇適當預測模式即可求得,減少重覆性測量作業,達到精簡時間及人力成本的目的。
由於產能預測是企業或公司最主要的工作之一,其預測的準確性對於訂單採購、生產排程、存貨管理以及最終配送過程均有極大的影響。透過準確的預測,可減少不必要的浪費、縮短產品上市時間、降低庫存成本、提高顧客滿意度及整體競爭力。
產能預測最重要之依據來自標準工時,而工時量測乃是制定標準工時最基本的步驟。目前工時量測的工具仍以碼表為主,每項產品量測數據不多,但每生產一項新產品便需測量一次,過程繁複,需耗費龐大的時間。以科技產業為例,隨著科技產業規模逐漸擴大,產品項目越來越多,重複性的工時量測與動作分析會造成不必要之時間及人力成本的浪費。
本研究之結果發現,生產時間較長之站點,其灰關聯度值較低,穩定性較差。而工時預測方法以灰預測法GM(1,1)Alpha修正模型所得預測結果最佳,為本研究所使用之三種方法中,最適合用以預測工時的方法。
This study utilizes grey relational analysis to analyze the stability of production time between seven work stations , and utilizes grey forecasting GM(1,1) model, GM(1,1)Alpha model, and exponential smoothing method to construct a tact time measurement-forecasting model, then finds the best forecasting model for the tact time. All data is selecting from the LCM factory of an optoelectronic company.
Capacity forecasting is one of the major tasks in business. The forecast precision has a great effect on purchase order, production scheduling, storage management, and final distribution. Through the precise forecasting can reduce unnecessary waste, shorten the time to market, lower the storage cost, increase the customer satisfaction and competition advantage.
The standard time is the most important content of capacity forecasting. Furthermore, the time measurement is the basic step of making standard time. Now stopwatch is still the major tool of time measurement. The data of every product’s tact time is few, but it needs to measure one time when producing a new product. The process is inextricable and it may invest a lot of time. Taking the technology firms for example, as the scale of technology firms become large there are more and more products and the reduplicate time measurement may cause unnecessary waste of time and manpower.
In this study, the result demonstrates that the grey relational grade is lower and stability is bad when the production time of work station is longer. Furthermore, the grey forecasting GM(1,1)alpha model is much better than other two method. The grey forecasting GM(1,1)alpha model is suited to the tact time forecasting.
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校內:2028-06-18公開