臺灣博碩士論文加值系統

大眾捷運系統為現代化都市的重要指標，其投資金額龐大，工程複雜、時程冗長，捷運系統的工程品質及往後營運的效能與安全受到極端的重視。為了能達到高品質、高可靠度的捷運系統，於規劃期間就同時考慮系統的可靠度、可用度、可維修性（Reliability-Availability-Maintainability,RAM）為近代捷運工程建設的新趨勢。
捷運系統之環境控制系統負責捷運車站與隧道於正常與異常及緊急時的空氣通排風的控管，由於攸關乘客的舒適度及緊急時的安全性，該系統的RAM分析更有其必要性。
模糊計算具有更精確求出具有不確定性問題解的特性。本論文考慮捷運環控系統之設備於廠牌的差異及製造上的不確定性，提出以摸糊計算的方法執行環控系統的RAM分析。捷運環控系統包括低壓供電系統、環控監控系統、環控通排風系統、風機系統及風門系統。RAM分析以可靠度分析為基礎，本文中對各子系統之基本設備或單元先由數種代表性廠牌所提供的可靠度參數，據以整合為該設備或單元的可靠度模糊函數。再由系統設備與子系統的功能關係求出該子系統的模糊故障樹，並進而求得整體環控系統的模糊故障樹。利用模糊故障樹分析法求得子系統或全系統的可靠度模糊函數，再考慮設備的維修時間，得以計算各系統或子系統的可用度。此外，本論文中，亦利用所求得的可靠度度模糊函數，同時考慮要維修時所需的交通時間及設備維修或更換時間以求出系統或子系統的可維修度。
本論文最後以高雄捷運系統的R3車站的環控系統為實例系統，應用本論文所提出之模糊計算討論其RAM分析之結果。由模擬結果與目前現有系統訂定的目標值比較，可以驗證本方法的實用程度。此外，本論文亦提出系統擴充及設備投資與備品數量的有效建議。

Mass rapid transit system (MRTS) is an important indicator for a modern metropolis.The system quality and reliability of the system is significantly concerned in MRTS. Simultaneously considering the reliability, availability, and maintainability (RAM) during the design phase is a new trend for the construction of a modern MRTS.
Environment control sysem (ECS) of a MRTS is designed to maintain the atmosphere of the stations and the tunnels in proper conditions in the cases of normal, abnormal, and even emergent conditions. The reliability of the ECS is especially concerned. Since the reliability of the ECS depends on the quaility of the system components, the subsystems, and the systems used in the ECS, uncertainties due to manufacturing inherently exist.
In this thesis, fuzzy logics will be exploited to consider the uncertainties of manufacturing for the RAM analysis of the ECS of MTRS. The ECS including the power-supply system, the local-enviornment-control supervisory system, the somke exhaust system, the tunnel ventilation fan system, and the tunnel damper system is studied on the RAM analysis in the thesis.
By taking account the reliability indices provided by frequently-used equipment suppliers, typical fuzzy membership functions of reliability are found for the components. The technique of fuzzy fault tree analysis is applied to obtain the fuzzy membership function of reliability for the subsystem and/or the entire system. Also, Maintenance time to maintain the equipments is considered in the evaluation of availability of the system. The evaluation of maintainability is based on the time of shipping of repair parts and the time of the repairing.
In this thesis, the environment control system of R3 station in Kaohsiung MRTS is selected as the practical system for simulations. By the comparison of the results of the simulation with the design index of reliability from the consultants, it is found that the proposed approach provides effective performance to verify the design data. In addition, suggestions for the system expanses, facility investment, and quantity of spar parts are proposed in this thesis.

第1章 緒論
第2章 模糊理論
第3章 RAM分析理論基礎
第4章 捷運環境控制系統
第5章 環控系統RAM之模糊分析
第6章 實際系統模擬
第7章 結論與未來研究方向

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