主要介绍了一个基于Linux 操作系统的实时平台的技术研究和实现方法。所研究的实时平台以X86 体系PC 为硬件环境,Linux 操作系统的标准内核加载RTAI 模块为软件环境,可为构建实时系统提供优良平台。该平台通过RTAI 在Linux 上定义的一个实时硬件抽 象层(RTHAL)来实现实时进程的最高优先级调用。 [关键词] Linux;实时平台;RTAI;实时进程 [中图分类号] TP311;TP319.9 [文件标识码] A The Real-Time Platform Based on Linux LI jun-ping ,mei hong , shan jia-yuan (Mechatronics Department,Beijing Institute of Technology,Beijing 100081,China) Abstract: This paper aims to make a brief study of the real-time platform based on Linux. The hardware of real-time platform is X86 PC, and the software of real-time platform is modified Linux kernel by RTAI modules .The real-time platform has been successfully applied into some practical experiment simulation control systems. Key word: Linux ; real-time platform ;RTAI ;real-time proceeding