為解決實時軟件設計中實時性能難以保證、開發方法通用性差的問題，設計了一種基于RTX的實時操作系統環境下，開發實時軟件的通用方法。首先，分析了基于RTX的系統平臺的實時性能。然后，從一般意義上研究實時軟件的任務調度特性，建立起一個通用的參數化、層次化、模塊化結構。最后，利用RTX的實時調度機制，詳細設計了任務模塊的調度運行流程，并驗證了軟件的實時性能。此方法從系統環境和調度機制兩個角度提高了實時軟件的實時性能，并從一般意義上給出了實時軟件的通用的開發方法。

　　Abstract:

　　To find a solution to ensure the real-time capability and work out an efficient develop method in real-time software development， we designed a general method of real-time software development based on RTX， a real-Time extension subsystem. Firstly， it analyses the capability of RTX on real-time performance.Then it extracts the basic characteristic of scheduling in real-time system and establishes a general structure with preferences， hierarchy and modules. At last， it designs a particular flow of task modules scheduling by use of real-time method of RTX.It improve the real-time capability from by RTX and PRI task-schedule and it works out a all-purpose method of real-time software development