计算机工程 ›› 2008, Vol. 34 ›› Issue (24): 94-95.doi: 10.3969/j.issn.1000-3428.2008.24.033

• 网络与通信 • 上一篇    下一篇

网络控制系统中混合调度算法的研究

陈丹丹1,夏 立1,王海峰2   

  1. (1. 海军工程大学电气与信息工程学院,武汉 430033;2. 海军91663部队装备质量控制室,青岛 266011)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-12-20 发布日期:2008-12-20

Research on Mixed Scheduling Algorithm in Networked Control System

CHEN Dan-dan1, XIA Li1, WANG Hai-feng2   

  1. (1. College of Electric & Information Engineering, Naval University of Engineering, Wuhan 430033; 2. Equipment Section of Quality Controlling, Naval Unit No.91663, Qingdao 266011)
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-12-20 Published:2008-12-20

摘要: 网络控制系统的性能与信息调度有关,而以往的调度算法大多把时间属性作为确立优先级的依据,无法反映出消息的重要性。该文在最大误差优先算法的基础上,提出以最大优先变化为主,越长时间越低优先级为辅的混合调度算法,丰富了优先级的确立依据。仿真实验结果表明,该混合调度算法能够有效提高控制系统的整体性能。

关键词: 网络调度, 网络控制系统, 混合调度

Abstract: The performance of Networked Control System(NCS) depends on the message scheduling. However, most scheduling algorithms make the time characteristic as the basis for establishing the priority, which can not show the importance of information. A mixed scheduling algorithm based on Maximum Error First(MEF) algorithm is proposed, in which the Maximum Change First(MCF) algorithm is major and the Larger Delay Lower Priority(LDLP) algorithm is minor. This new algorithm enriches the basis for establishing the priority. Simulation experimental results show this mixed scheduling algorithm can promote the whole performance of the control system effectively.

Key words: network scheduling, Networked Control System(NCS), mixed scheduling

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