嵌入式Linux 系統由于不支持硬實時任務，限制了其在電能質量監控系統等高實時
性領域中的應用。本文介紹了嵌入式Linux 系統的實時性，并利用RTAI（Real Time
Application Interface）對嵌入式uClinux 系統進行了實時性擴展，將RTAI－Linux 雙內核系統實際應用于電能質量監控實驗平臺，并通過與uClinux 系統的對比實驗驗證了該系統的硬實時性能，證明其滿足電能監控領域的實時性要求。
關鍵詞：嵌入式Linux, 硬實時, RTAI

Abstract: Embedded Linux operation system does not support hard real-time tasks; that seriously restricts its applications. After analyzing the real-time capability of embedded Linux, this article uses RTAI（Real Time Application Interface）to enable uClinux to support hard real-time performance and proves the improvement in the experiments. That strives for the popularization of embedded Linux in monitoring and automation fields in electrical power system.
Keyword: Embedded Linux, Hard Real-time, RTAI