為解決實時軟件設(shè)計中實時性能難以保證、開發(fā)方法通用性差的問題，設(shè)計了一種基于RTX的實時操作系統(tǒng)環(huán)境下，開發(fā)實時軟件的通用方法。首先，分析了基于RTX的系統(tǒng)平臺的實時性能。然后，從一般意義上研究實時軟件的任務(wù)調(diào)度特性，建立起一個通用的參數(shù)化、層次化、模塊化結(jié)構(gòu)。最后，利用RTX的實時調(diào)度機(jī)制，詳細(xì)設(shè)計了任務(wù)模塊的調(diào)度運(yùn)行流程，并驗證了軟件的實時性能。此方法從系統(tǒng)環(huán)境和調(diào)度機(jī)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(fā)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