嵌入式Linux 系統(tǒng)由于不支持硬實(shí)時任務(wù)，限制了其在電能質(zhì)量監(jiān)控系統(tǒng)等高實(shí)時
性領(lǐng)域中的應(yīng)用。本文介紹了嵌入式Linux 系統(tǒng)的實(shí)時性，并利用RTAI（Real Time
Application Interface）對嵌入式uClinux 系統(tǒng)進(jìn)行了實(shí)時性擴(kuò)展，將RTAI－Linux 雙內(nèi)核系統(tǒng)實(shí)際應(yīng)用于電能質(zhì)量監(jiān)控實(shí)驗(yàn)平臺，并通過與uClinux 系統(tǒng)的對比實(shí)驗(yàn)驗(yàn)證了該系統(tǒng)的硬實(shí)時性能，證明其滿足電能監(jiān)控領(lǐng)域的實(shí)時性要求。
關(guān)鍵詞：嵌入式Linux, 硬實(shí)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