臺灣博碩士論文加值系統

本研究發展出一個沿面佈管方法，能在多個矩形空間內(譬如工廠廠房或船舶機艙)，沿著隔間牆壁佈置管線之管路佈置方法。
沿面佈管方法參考直交管路佈置方法所決定的管路路徑走法。該直交管路佈置方法所取得的參考路徑若沒有貼近牆壁，管路設計工程師將無法直接使用這些參考路徑佈置管線。本研究中所研發的管路平移技術，可將管線移往隔間牆壁以便於固定管線。該平移技術中的管路移動規則可決定管路平移方向和移動距離。
本研究已將所發展之沿面佈管方法及管路平移技術撰寫成電腦程式，在電腦模擬之狀況裡，展現此沿面佈管方法之功能。此電腦程式對一組管線起點與終點可自動搜尋出12組管線，使管路設計工程師於佈置新管線時有所依據。管路工程師亦可考量管路成本因素，選擇一組所需管線最短、肘管最少的管路路徑。
本研究舉一例來說明管路平移技術。雖然距離運用此電腦佈管方法取代目前的管路設計工程師於工程設計，尚有一段的努力空間。但是此沿面佈管方法其價值在於能協助管路設計工程師對矩形廠房空間之佈管，尋找可能之佈管路徑，加速管路佈置設計。

This research developed a piping system design method, called Surface Routing Method (SRM), to automatically determine pipe routes along the bounding surfaces of rectangular spaces such as a plant or engine room. These pipe routes serve as the centerlines of the straight pipes in pipe assemblies in the design.
Initially, the routing design method (SRM) uses the Orthogonal Routing Method to layout reference routes for a new pipe assembly. If the route segments are away from the bounding surfaces of the space, the route segments cannot be used to layout the pipe assembly. A route free-fall scheme has been developed to move the route segments of the reference routes to the bounding surfaces, such that it is feasible to layout pipe assemblies according to the routes. There are three levels of free-fall for general cases. Falling Priority Rules have been developed to select free-fall directions and determine the falling distances.
A C++ computer program has been developed for the free-fall scheme and the Surface Routing Method. The computer program can automatically find 12 pipe routes for piping system design engineers to layout a pipe assembly that connects a pair of source and destination points. From the total pipe length and the total number of elbows calculated by the computer program for each feasible pipe assembly route, engineers can select the most economic route to design the pipe assembly.
The free-fall scheme developed has been explained and tested by examples. This research work (1) makes the automation of surface routing of piping system design feasible and (2) can reduce the piping system design duration.

1. Introduction 1
1.1 Motivation 1
1.2 Objectives 2
2. Literature Review 3
2.1 CAD Systems for Piping System Design 3
2.1.1 PDMS Functions 3
2.1.2 CADMATIC Functions 4
2.1.3 Comparison between PDMS and CADMATIC 4
2.2 Existing Research Results 5
3. Method 11
3.1 Modeling of Bounding Surfaces and Equipment 11
3.2 Orthogonal Routing Method 13
3.3 Concept of Free-Fall 16
3.4 Surface Routing Method with Free-Fall 17
3.5 Formulation of the Problem Set 25
3.6 Computer Program 27
4. Example and Results 29
4.1 Input Data Set 29
4.2 Case Studies 30
4.3 Results and Discussion 39
5. Conclusion 41
Reference 43

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2. CADMATIC News, Jan. 2003, http://www.cadmatic.com.
3. Advanced Router User Guide, CADCENTRE Ltd., Cambridge, UK, 1998.
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7. Wu, J. K., Shaw, H. J., and Kuo, C. C., “Surface Routing Method for Piping Arrangement”, NSC Report, 87-2611-E-022-002.
8. Wu, J. K., “Automatic Collision Avoidance in Surface Routing Method”, NSC Report, 89-2611-E-022-001, July, 2000.
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