| 网络化控制系统带宽配置的一种新策略 |
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| 引用本文： | 白涛,吴智铭,杨根科.网络化控制系统带宽配置的一种新策略[J].自动化学报,2004,30(6):961-967. |
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| 作者姓名： | 白涛 吴智铭 杨根科 |
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| 作者单位： | 1.上海交通大学自动化系,上海; |
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| 基金项目： | 国家自然科学基金(60074011，60174009)资助~~ |
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| 摘 要： | 根据循环服务网的运行特征和三类数据(周期数据、紧急数据和非紧急数据)的不
同实时性要求,分析了不同类型数据的网络稳定性条件,提出动态共享时间窗的带宽配置策
略.该策略在满足系统实时性和网络稳定性要求的同时,降低了网络化控制系统对缓冲容量
的需求并充分地利用了带宽资源.进一步地,通过仿真实验研究了基本周期内非紧急数据带
宽配置策略的选择对系统实时性和网络稳定性的影响,说明当非紧急数据带宽选择合理时,
两种非紧急数据带宽配置策略均可保证系统良好的总体性能.
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| 关 键 词： | 网络化控制系统(NCSs) 网络时延 带宽 死限 |
| 收稿时间： | 2003-3-31 |
| 修稿时间： | 2003年3月31日 |
A New Scheme of Bandwidth Allocation for Networked Control Systems |
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| BAI Tao,WU Zhi-Ming,YANG Gen-Ke.A New Scheme of Bandwidth Allocation for Networked Control Systems[J].Acta Automatica Sinica,2004,30(6):961-967. |
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| Authors: | BAI Tao WU Zhi-Ming YANG Gen-Ke |
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| Affiliation: | 1.Department of Automations,Shanghai Jiao Tong University,Shanghai;Departrnent of Automation,yuan Heavy Machinery Institute,Taiyuan |
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| Abstract: | According to the characteristics of the cyclic-service networks and the real-time requirements of three different kinds of data,periodic data,time-critical data andtime-available data,the conditions of network stability are analyzed.A new bandwidthallocation scheme of dynamic sharing the time windows is proposed,which not only satisfiesboth requirements of real-timeliness and network stability,but also decreases the requiredbuffer capacity and makes full use of the network resources.Furthermore,the effects of thebandwidth allocation of time-available data on the system performances are analyzed bysimulation tests.It is shown that by proper choice of the bandwidth of time-available databoth two kinds of bandwidth allocation of time-available data could guarantee the betterperformance of Networked Control Systems(NCSs). |
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| Keywords: | Networked control systems (NCSs) network-induced delay bandwidth deadline |
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