- 學位論文
應用六標準差與田口方法於RFID晶片嵌入電纜最佳讀取位置之研究
The Study on the Optimized Reading Positions of the RFID Chips Embedded into Reeling Cable by Using Six Sigma and the Taguchi method
摘要
電線電纜為使用傳送電力訊號的有形線材，內層由特定股數絞束組成傳遞訊號，外層由保護與絕緣作用的塑膠外被組成。當電纜內層溫度升高時，易造成電纜劣化而斷裂，須有測試人員到現場將電纜從設備卸下，費時費工而且無法預防，無法預測的損壞會導致客戶與商譽虧損，在使用該電線電纜時，無法從外觀即時得知溫度升溫狀況、內層毀損程度。綜觀上述，為即時瞭解電纜內層運轉狀況，收集整條電纜上訊號來判讀電纜之標準，個案公司將RFID晶片嵌入電纜，擷取RFID晶片與讀取器反應訊號值作為即時判讀是否能繼續使用之依據，可在損壞初期盡早替客戶更換電纜，但目前獲得反應訊號值狀況不佳，無法運用做為判斷電纜好壞之根據。 電纜押出製程速度相對快，且每次押出達數千公尺，追求快速且穩定的產品甚為重要。本研究將探討RFID晶片嵌入電纜之最佳讀取位置，運用六標準差方法的五個階段系統化架構：定義(Define)、衡量(Measure)、分析(Analyze)、改善(Improve)與控制(Control)，致力於電纜嵌入最佳讀取位置問題與解決的步驟，以個案公司—捲盤電纜(Reeling Cable, 直徑47.86mm)為研究對象，經由與現場資深能力技術者決定八個影響品質特性的重要因子，利用實驗設計(Design of Experiment, DOE)之田口方法(Taguchi Method)L18直交表求得最佳的嵌入位置後，由手工嵌入電纜並實證結果能使反應訊號值能確實被讀取，以製程能力指標(C_pk)從0.55提升至1.57，驗證最佳讀取位置之研究。
並列摘要
Wire & Cable have been used to transmit power signal for years in our energy construction. Cable combines with two parts - the inner core consists of a specific number of strands that carry electric signal, and the outer layer jacket is made up of protective insulators. When the temperature of the inner layer rises, it will easy cause cable failure or malfunction. Then it needs engineering staff to remove the cable from device at the scene, which is time-consuming, labor-saving and hard to be prevented. Most of all, this unpredictable damage may result in customer losses and goodwill damage. However, we cannot know the inner heat and damage degrees via observing cable exterior. With the view to understanding the operational status instantly, this research uses cable-embed sensitive RFID chip to read the temperature variety as instant monitor. This application of RFID can find damage in the early stages and replace cable in advance. To pursue more stable product result, accurate and effective process conditions become main key points. This study apply stage systematic architecture of sigma method：define, measure, analyze, improve and control to solve the problems in cable extrusion process. Take Reeling Cable (47.86mm diameter) on as the object of the research, the outcome of RFID cable appears eight essential quality factors. Make use of Taguchi Method, DOE (Design of Experiment), L18 orthogonal table find the best spot for implanting sensitive RFID chip. That lets RFID chip reach the highest optimization of sense molding conditions, makes CPK (Process Capability Index) rise from 0.55 to 1.57 and verify the best process parameters to improve manufacturing yield.