| 事件/时间触发嵌入式操作系统内核的设计 |
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| 引用本文： | 陈曦,吕伟杰,刘鲁源.事件/时间触发嵌入式操作系统内核的设计[J].计算机工程与应用,2008,44(16):87-89. |
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| 作者姓名： | 陈曦 吕伟杰 刘鲁源 |
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| 作者单位： | 天津大学,电气与自动化工程学院,天津,300072 |
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| 基金项目： | 天津大学校科研和教改项目 |
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| 摘 要： | 针对分布式实时系统对操作系统内核的新需要,为避免因时间触发任务相互影响而造成的抖动,研究了时间触发任务的调度器设计,提出了一种改进的调度策略;在开放源代码的uCOSII嵌入式操作系统内核的基础上扩展了时间触发功能,设计了支持事件/时间混合触发的嵌入式实时操作内核TTuCOSII(Time-Triggered Micro Operating System II)。仿真实验表明TTuCOSII具有较高的时间触发精度,良好的调度性能,可以满足事件/时间混合触发的要求。
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| 关 键 词： | 事件/时间混合触发 任务调度 抖动 |
| 文章编号： | 1002-8331(2008)16-0087-03 |
| 收稿时间： | 2007-11-13 |
| 修稿时间： | 2007年11月13 |
Design and implementation of real time kernel supporting event/time mixed trigger |
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| CHEN Xi,LV Wei-jie,LIU Lu-yuan.Design and implementation of real time kernel supporting event/time mixed trigger[J].Computer Engineering and Applications,2008,44(16):87-89. |
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| Authors: | CHEN Xi LV Wei-jie LIU Lu-yuan |
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| Affiliation: | School of Electrical Engineering and Automation，Tianjin University，Tianjin 300072，China |
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| Abstract: | With the development of real-time distributed system,the real time kernel should meet new requirements such as event/time mixed trigger.To minimize the jitter because of the interference of time-triggered activities,an improved schedule of time-triggered tasks is proposed.A new embedded real time kernel named TTuCOSII(Time-Triggered Micro Operating System II) is implemented by adding the time-trigger module to the uCOSII which is an open source operating system kernel.Unlike other real-time kernels,TTuCOSII supports both event trigger and time trigger.Simulation shows that TTuCOSII is of high precision of time-trigger and high performance of scheduling,which fulfills the requirement of event/time mixed triggered system. |
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| Keywords: | event/time mixed triggered scheduler jitter |
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