[1]高政南,樊卫华,陈庆伟,等.基于模糊反馈的网络控制系统分层调度策略[J].南京理工大学学报(自然科学版),2010,(04):496-502.
 GAO Zheng-nan,FAN Wei-hua,CHEN Qing-wei,et al.Hierarchic Scheduling Policy Based on Fuzzy Feedback in Networked Control Systems[J].Journal of Nanjing University of Science and Technology,2010,(04):496-502.
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基于模糊反馈的网络控制系统分层调度策略
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2010年04期
页码:
496-502
栏目:
出版日期:
2010-08-31

文章信息/Info

Title:
Hierarchic Scheduling Policy Based on Fuzzy Feedback in Networked Control Systems
作者:
高政南;樊卫华;陈庆伟;胡维礼;
南京理工大学自动化学院
Author(s):
GAO Zheng-nanFAN Wei-huaCHEN Qing-weiHU Wei-li
School of Automation,NUST,Nanjing 210094,China
关键词:
网络控制系统 工业以太网 优先级 带宽分配 分层调度 模糊反馈
Keywords:
networked control systems industrial ethernet priority bandwidth allocation hierarchic scheduling fuzzy feedback
分类号:
TP273
摘要:
针对基于工业以太网的网络控制系统中控制回路数据、非实时数据和紧急数据共享有限优先队列和网络带宽的特点,综合考虑了控制回路的控制性能要求和非实时节点的网络服务质量要求,提出了基于模糊反馈的分层调度策略。各控制回路和非实时节点的带宽范围由指定的调度节点定时集中分配。在分配的带宽范围内,控制器节点利用系统误差及其变化动态地设定采样周期和数据优先级,非实时节点利用时延和丢包率动态地调整数据包的长度及优先级。与线性最早时限优先、线性最早时限优先+死区调度策略、线性混合业务调度和线性混合业务调度+死区调度策略的对比仿真实验,验证了该调度策略的有效性。
Abstract:
According to the characteristics in industrial ethernet networked control systems(IE-NCS),limited priority queues and finite network bandwidth shared by control-loop data,non-realtime data and emergent data,a hierarchic scheduling policy based on fuzzy feedback(HSP-FF) is presented.Requirements of PoC(Performance of control) of control loops and QoS(Quality of service) of non-realtime nodes are comprehensively considered in HSP-FF.The bandwidth range of every control-loop and non-control node is periodically allocated by the appointed scheduling node.Within the allocated bandwidth range,the period and packet priority of control loops are dynamically set by considering error and error difference of control loops in the controller node;the packet length and packet priority of non-control nodes are dynamically set by considering time delay and packet drop rate in the non-realtime node.HSP-FF is validated by the comparative experiment with LEDF(Linearly earliest deadline first),LEDF+DB(Deadband),LMTS(Linearly mixed traffic scheduling) and LMTS+DB.

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备注/Memo

备注/Memo:
基金项目: 江苏省自然科学基金( BK2008404) ; 教育部博士点专项基金( 20070288022 ); 国家自然科学基金 ( 60975075) 作者简介: 高政南( 1981- ), 男, 博士生, 主要研究方向: 网络控制系统, E-mail: gzn1981@ 163. com; 通讯作者: 樊卫 华( 1975- ), 男, 博士, 副教授, 主要研究方向: 网络控制系统, 非线性控制, E-mail: we ihua_fan@ tom. com。
更新日期/Last Update: 2012-11-02