程序控制軟體規格之再利用

Abstract

軟體再利用是提昇軟體品質與生產力之主要技術，可再利用的軟體元件包 括程式碼、設計文件及規格，其中以軟體規格之再利用所獲效益最大及技 術困難度最高，因此目前鮮有研究成果。由於相同領域軟體之相似性較高 ，因此其再利用性較大，因此本論文提出元件組合方式制定程序控制軟體 。程序控制軟體之目的在控制一化工廠之所有生產程序，各化工程序均有 一相對應之軟體程序來監控及運作，各化工程序(稱之為實體)之特徵為其 控制變數及其操作動作，本論文將一化工程序視為物件，而控制化工程序 之程序一化工程序視為物件，而控制化工程序之程序當作再利用之元件， 本論文並在傅明榮學長發展之程序控制軟體規格發展環境增加再利用功能 ，因此分析師可易於利用已有規格制定新系統之規格，發展之規格可利用 快速雛形方式驗證其正確性。本論文之主要貢獻如下： (1)提出以物件來 表示一化工程序特徵之觀念。 (2)提出一套程序控制軟體規格再利用方法 。 (3)建造一再利用之環境。 Software reuse has been recognized as an efficient technique to promote software quality and productivity. The reusable software components include the codes, design specifications, and requirement specifications. Software requirements reuse is the most efficient way to improve software quality and productivity, but the most difficult way to achieve too. Therefore, up to this time there are few researches as to requirement specification reuse. Software within the same domain have high reusability because they have the similar characteristics. A component reuse methodology to define requirement specification of process control software is proposed in this paper. In addition, we enhance the previous process development tool by adding the reuse functionality, so the analysts can define a new system specification by reusing existed components. The contributions of the thesis are: (1) Characterize a production process by an object model. (2) Develop a process control software requirement specification reuse methodology. (3) Design and implement a process control software design specification reuse environment.