计算机工程

• 体系结构与软件技术 • 上一篇    下一篇

嵌入式控制驱动状态转移事件的预测调度模型

张晶,陈垚,孙俊,范洪博   

  1. (昆明理工大学 信息工程与自动化学院,昆明 650500)
  • 收稿日期:2016-06-30 出版日期:2017-08-15 发布日期:2017-08-15
  • 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;孙俊(通信作者)、范洪博,博士。
  • 基金项目:
    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)。

Predictive Scheduling Model of Embedded Control Driving State Transition Events

ZHANG Jing,CHEN Yao,SUN Jun,FAN Hongbo   

  1. (Faculty of Information Engineering and Automation,Kunming University of Science and Technology,Kunming 650500,China)
  • Received:2016-06-30 Online:2017-08-15 Published:2017-08-15

摘要: 在嵌入式控制系统执行状态转移任务的过程中,存在事件可调度性难以保证和抢占任务成本高的问题。为此,构建一种结合前馈预测模型与反馈监测模型的预测调度模型。增加同时具有价值量约束与时钟约束的实时约束标签,以实时调整事件在释放队列中的顺序,提高控制系统的实时性与确定性。仿真结果表明,该模型能有效提高控制系统性能,稳定系统作用时间。

关键词: 嵌入式控制, 状态转移, 调度, 确定性, 约束条件

Abstract: In the execution process of status transfer tasks for embedded control systems,the schedulability of events is difficult to guarantee and it needs high costs when a task is preempted.Aiming at these problems,this paper constructs a predictive scheduling model combining Feedforward prediction Model(FFM) and Feedback Monitoring Model(FMM).It adds the real-time label of constraint condition including value and timing constraints,so as to adjust the order of events in the released queue in real time and improve the real-time performance and determinacy of the control system.The result of simulation shows that the proposed model can improve the performance of control system and stabilize system’s effect time.

Key words: embedded control, state transition, scheduling, determinacy, constraint condition

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