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題 名 | 結合固定優先權排程法之即時嵌入式飛控軟體設計=Implementing a Real-Time Flight Control Embedded Software with the Fixed Priority Scheduling Algorithm |
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作 者 | 陳戊鋐; | 書刊名 | 新新科技年刊 |
卷 期 | 1 民94.01 |
頁 次 | 頁110-118 |
分類號 | 447.85 |
關鍵詞 | 即時系統; 嵌入式系統; 硬性即時; 安全嚴苛性; 循環排程; 固定優先權排程; 飛行控制系統; 即時核心; Real-time system; Embedded system; Hard real-time; Safety-critical; Cyclic Scheduling; Fixed priority scheduling; Flight control system; Real-time kernel; |
語 文 | 中文(Chinese) |
中文摘要 | 飛行控制系統為典型之即時嵌入式系統之應用,其設計通常須考量硬性即時及安全嚴苛性之要求。傳統上,此種系統係以靜態循環排程方式設計,以確保系統運作之穩定性及程式可驗證性。然而因循環排程方式受限於其計算模型及系統不易維護等缺點,故考量其他可行之排程方式亦為值得研究之課題。本文利用一個精簡且為開放原始程式碼之即時核心實作一個飛行控制系統之運作軟體。由於該核心具有優先權驅動及可插斷之特性,故可用以將固定優先權排程法整合於傳統之飛行控制系統中,以提高系統之反應性及模組化特性。藉由此實作,吾人可瞭解並掌握典型之即時飛控系統軟體設計涉及之相關技術。 |
英文摘要 | The flight control system design is typically a real-time embedded application with hard real-time and safety-critical consideration. The static cyclic scheduling algorithm is traditionally the major technique for this application to guarantee the determining behavior and full precoding verification. However, considering the other feasible scheduling policy is a good attempt since the static cyclic scheduling method has the disadvantages of restricted computational model and poor maintainability. In this paper, a practical flight control system was built with a compact, open source code and real-time kernel. As the used kernel is priority-driven and preemptive, the flight cotrol system can integrate the fixed priority scheduling method to improve its responsive and modularized features. The issues to build the practical embedded software are also discussed in the paper. |
本系統中英文摘要資訊取自各篇刊載內容。