| 反馈调度减少实时控制任务的输出抖动 |
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| 引用本文： | 周平方,谢剑英,刘俊.反馈调度减少实时控制任务的输出抖动[J].上海交通大学学报,2005,39(12):2052-2056. |
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| 作者姓名： | 周平方 谢剑英 刘俊 |
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| 作者单位： | 上海交通大学,自动化系,上海,200030;无锡总装工程兵科研一所,无锡,214035 |
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| 摘 要： | 提出一种反馈调度的方法在线调节控制任务的截止时限，从而减少输出抖动．反馈控制器采用比例算法，通过对其参数的自调整以动态满足整个任务集的可调度性．控制算法被公式化为一个截止时限分配表达式．仿真结果验证了该方法的有效性．
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| 关 键 词： | 实时控制系统 反馈调度 抖动 最早截止时限优先 |
| 文章编号： | 1006-2467（2005）12-2052-05 |
| 收稿时间： | 2005-01-10 |
| 修稿时间： | 2005年1月10日 |
Feedback Scheduling to Reduce Output Jitter of Real-Time Control Tasks |
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| ZHOU Ping-fang,XIE Jian-ying,LIU Jun.Feedback Scheduling to Reduce Output Jitter of Real-Time Control Tasks[J].Journal of Shanghai Jiaotong University,2005,39(12):2052-2056. |
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| Authors: | ZHOU Ping-fang XIE Jian-ying LIU Jun |
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| Institution: | 1. Dept. of Automation, Shanghai Jiaotong Univ., Shanghai 200030, China; 2. First Research Inst. of Corps of Eng. , General Armaments Dept. , PLA, Wuxi 214035 |
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| Abstract: | A feedback scheduling approach was presented to adjust control tasks' deadlines online thus to reduce output jitter.The feedback controller employs a proportional law,whose parameter is adjusted adaptively to satisfy the total task set schedulability dynamically.The control algorithm is formulized as a deadline assignment expression.The simulation results illustrate its effectiveness. |
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| Keywords: | real-time control systems feedback scheduling jitter earliest deadline first(EDF) |
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