提出一种软件定义控制系统(software defined control system,SDCS),它是一种基于全连通群的全分布式控制器方案,其特点是控制任务被虚拟化为多个虚拟控制任务(virtual control tasks,VCTs)后分布在无线网络中具有计算和存储功能的节点...提出一种软件定义控制系统(software defined control system,SDCS),它是一种基于全连通群的全分布式控制器方案,其特点是控制任务被虚拟化为多个虚拟控制任务(virtual control tasks,VCTs)后分布在无线网络中具有计算和存储功能的节点上。无线网络的拓扑结构本质上是不稳定的,通过构建可迁移节点集,在虚拟控制任务和节点之间建立动态映射关系,以应对潜在的节点故障对控制系统功能和性能的影响。将映射关系调整过程等效为外部方波脉冲扰动,分析了节点故障引起的映射关系的改变对系统稳态和动态性能的影响。所提方案中无线网络充当一个动态的分布式控制器,而非使用某一特定核心节点执行控制任务,上述控制器分布式设计以及动态映射关系提升了控制系统的灵活性和可靠性。最后在MATLAB/Simulink中进行了仿真分析,结果显示了所提方案的可用性及有效性。展开更多
Highly efficient and stable hybrid white organic light-emitting diodes （HWOLEDs） with a mixed bipolar interlayer between fluorescent blue and phosphorescent yellow emitting layers are demonstrated. The bipolar inter...Highly efficient and stable hybrid white organic light-emitting diodes （HWOLEDs） with a mixed bipolar interlayer between fluorescent blue and phosphorescent yellow emitting layers are demonstrated. The bipolar interlayer is a mixture of p-type diphenyl （l0-phenyl-lOH-spiro [acridine-9,9＇-fluoren]-3Lyl） phosphine oxide and n-type 2＇,2- （1,3,5-benzinetriyl）-tris（1-phenyl-l-H-benzimidazole）. The electroluminance and Commission Internationale de l＇Eclairage （CIE1931） coordinates＇ characteristics can be modulated easily by adjusting the ratio of the hole- predominated material to the electron-predominated material in the interlayer. The hybrid WOLED with a p-type：n-type ratio of 1：3 shows a maximum current efficiency and power efficiency of 61.1 ed/A and 55.8 lm/W, respectively, with warm white CIE coordinates of （0.34, 0.43）. The excellent efficiency and adaptive CIE coordi- nates are attributed to the mixed interlayer with improved charge carrier balance, optimized exciton distribution, and enhanced harvesting of singlet and triplet excitons.展开更多
文摘提出一种软件定义控制系统(software defined control system,SDCS),它是一种基于全连通群的全分布式控制器方案,其特点是控制任务被虚拟化为多个虚拟控制任务(virtual control tasks,VCTs)后分布在无线网络中具有计算和存储功能的节点上。无线网络的拓扑结构本质上是不稳定的,通过构建可迁移节点集,在虚拟控制任务和节点之间建立动态映射关系,以应对潜在的节点故障对控制系统功能和性能的影响。将映射关系调整过程等效为外部方波脉冲扰动,分析了节点故障引起的映射关系的改变对系统稳态和动态性能的影响。所提方案中无线网络充当一个动态的分布式控制器,而非使用某一特定核心节点执行控制任务,上述控制器分布式设计以及动态映射关系提升了控制系统的灵活性和可靠性。最后在MATLAB/Simulink中进行了仿真分析,结果显示了所提方案的可用性及有效性。
基金Supported by the National Natural Science Foundation of China under Grant No 91441201
文摘Highly efficient and stable hybrid white organic light-emitting diodes （HWOLEDs） with a mixed bipolar interlayer between fluorescent blue and phosphorescent yellow emitting layers are demonstrated. The bipolar interlayer is a mixture of p-type diphenyl （l0-phenyl-lOH-spiro [acridine-9,9＇-fluoren]-3Lyl） phosphine oxide and n-type 2＇,2- （1,3,5-benzinetriyl）-tris（1-phenyl-l-H-benzimidazole）. The electroluminance and Commission Internationale de l＇Eclairage （CIE1931） coordinates＇ characteristics can be modulated easily by adjusting the ratio of the hole- predominated material to the electron-predominated material in the interlayer. The hybrid WOLED with a p-type：n-type ratio of 1：3 shows a maximum current efficiency and power efficiency of 61.1 ed/A and 55.8 lm/W, respectively, with warm white CIE coordinates of （0.34, 0.43）. The excellent efficiency and adaptive CIE coordi- nates are attributed to the mixed interlayer with improved charge carrier balance, optimized exciton distribution, and enhanced harvesting of singlet and triplet excitons.
