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计算机工程

• 体系结构与软件技术 • 上一篇    下一篇

信息物理融合系统任务调度权限控制策略

张晶,陈垚,范洪博,孙俊   

  1. (昆明理工大学 信息工程与自动化学院,昆明 650500)
  • 收稿日期:2016-04-11 出版日期:2017-04-15 发布日期:2017-04-14
  • 作者简介:张晶(1974—),男,教授、博士,主研方向为实时嵌入式软件;陈垚,硕士研究生;范洪博(通信作者)、孙俊,博士。
  • 基金资助:
    国家自然科学基金(61562051);云南省应用基础研究计划重点项目(2014FA029)。

Control Strategy of Task Scheduling Permission in Cyber-physical System

ZHANG Jing,CHEN Yao,FAN Hongbo,SUN Jun   

  1. (Faculty of Information Engineering and Automation,Kunming University of Science and Technology,Kunming 650500,China)
  • Received:2016-04-11 Online:2017-04-15 Published:2017-04-14

摘要: 信息物理系统任务调度中计算时序约束与硬件能耗阈值存在冲突,难以保证执行顺序正确。为此,提出一种任务调度权限控制策略。采用超致密时间模型表达全局时间信号,以事件的剩余价值密度、执行积极性、资源消耗3个约束条件刻画任务的价值量、截止期及能耗,为任务实时分配设备与资源,减少颠簸现象。仿真结果表明,该策略能提高任务累积价值,降低能耗与执行时间,使系统获取更高的综合效益。

关键词: 信息物理融合系统, 调度权限, 价值量, 截止期, 能耗

Abstract: The computer temporal constraint and the hardware energy consumption threshold may have a conflict,when the tasks of Cyber-physical System(CPS) are scheduled,and that cannot guarantee correct execution sequence.In order to solve this problem,a control strategy of task scheduling permissions is proposed.Super-dense time model is used to express global time signal.The remainder value density,execution enthusiasm and resource consumption of events are used to represent the quantity of value,deadline and energy consumption of tasks.Equipment and resources are distributed for real-time tasks,and the occurrence of thrashing are reduced.Simulation results show that this strategy can improve the cumulative value of tasks,and reduces the energy consumption and execution time,achieves higher overall efficiency of the system.

Key words: Cyber-physical System(CPS), scheduling permission, quantity of value, deadline, energy consumption

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