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．
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).
出处
《自动化学报》
EI
CSCD
北大核心
2004年第6期961-967,共7页
Acta Automatica Sinica
基金
国家自然科学基金(60074011
60174009)资助~~
