排序方式: 共有29条查询结果,搜索用时 15 毫秒
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为了解决机器人物流系统的智能设备即插即用、系统可重构性等问题,采用一种具有良好通用性、灵活性和可重构性的基于SOA的系统集成架构.对工业控制系统的现状进行了分析,指出系统可重构性是降低系统配置成本的关键,说明实时性保障是基于SOA的系统架构设计中的难点.在此基础上设计了通用网络控制系统架构,使基于不同标准的设备之间以统一的方式集成和交互,并且可以方便地与企业其它信息系统集成.通过机器人物流系统验证了该架构的可重构性和实时性. 相似文献
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This paper presents a robust dc-link voltage as well as a current control strategy for a bidirectional interlink converter (BIC) in a hybrid ac/dc microgrid. To enhance the dc-bus voltage control, conventional methods strive to measure and feedforward the load or source power in the dc-bus control scheme. However, the conventional feedforward-based approaches require remote measurement with communications. Moreover, conventional methods suffer from stability and performance issues, mainly due to the use of the small-signal-based control design method. To overcome these issues, in this paper, the power from DG units of the dc subgrid imposed on the BIC is considered an unmeasurable disturbance signal. In the proposed method, in contrast to existing methods, using the nonlinear model of BIC, a robust controller that does not need the remote measurement with communications effectively rejects the impact of the disturbance signal imposed on the BIC's dc-link voltage. To avoid communication links, the robust controller has a plug-and-play feature that makes it possible to add a DG/load to or remove it from the dc subgrid without distorting the hybrid microgrid stability. Finally, Monte Carlo simulations are conducted to confirm the effectiveness of the proposed control strategy in MATLAB/SimPowerSystems software environment. 相似文献
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Many imperfections in a practical quantum key distribution (QKD) system have been exploited by an eavesdropper (Eve) to attack the system. However, most of these attacks will introduce perturbations to the system while collecting information about the key. For example, the phase-remapping attack [Phys. Rev. A2007,75, 032314], in which Eve performs time shift on the signal pulse from the constant acting range of the phase modulation voltage to its rising edge to introduce an imperfection, results in an quantum bit error rate (QBER) of 14.6%, which is too high and will be discovered by careful users. In this paper, a frequency shift (FS) attack on ‘plug-and-play’ QKD systems with phase-coding BB84 protocol is proposed, in which Eve introduces an imperfection by the same method as she used in the phase-remapping attack. The most novel advantage of our FS attack is that Eve can get full information without introducing detectable QBER, which is more deceptive than the phase-remapping attack. 相似文献
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微电网与公共电网即插即用技术研究 总被引:1,自引:0,他引:1
采用基于主控微源恒压恒频的组网控制策略,主控微源建立微电网的电压和频率,从微源以最大功率点跟踪运行.在微源组网基础上提出微电网的即插即用技术,通过对微电网中主控微源的并网过程和离网过程平滑切换控制,实现微电网与公共电网的能量交换,并保证微电网内敏感负荷上电压稳定.对微电网即插即用的各个实现过程进行了详细分析,并对即插即用过程进行了仿真和实验研究.结果表明微电网即插即用技术正确可行,对本地敏感负荷影响较小,易于硬件实现. 相似文献
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提出一种按照OCP-IP协议将IP自动封装的方法。被OCP-IP协议封装的IP可以直接集成到带有OCP-IP接口的各种总线上。同时,设计了最常用的AMBA总线的OCP-IP接口,进而实现AMBA总线上OCP-IP核的即插即用功能,加快SoC系统的设计和验证。 相似文献
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视频监控系统在现实生活中应用极其广泛,但因为视频监控系统现场设备众多、设备的互异性较大、可扩展性较差的特点,本文构建出一个以Jini体系架构为基础、以服务为核心分布式系统,以使各种视频监控设备均能方便地加入和退出系统,实现设备的"网络即插即用"功能。 相似文献
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Jerry Chang 《电源世界》2007,(11):71-73,59
针对脉冲雷达应用,Microsemi公司PPG集团推出了系列化的L波段和S波段功率模块(PSM)。这些功率模块可输出2~3倍于当今市场上单个晶体功率管所能输出的功率,其设计采用了易于使用的"即插即用"概念,用户能够直接将其植入系统而不需进行更多的阻抗匹配设计。更高的输出功率和更高的效率,加上"即插即用"的特点能够极大地简化用户系统设计的复杂性,缩短设计周期,功放部分的尽寸缩小50%以上,并且极大地提高了用户产品的开机合格率。 相似文献
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能源互联网接入设备是用能设施接入能源互联网的媒介。文中阐述了适用于多元用户互动的能源互联网接入设备的基本概念和特征,并基于计算机领域"通用串行总线(USB)"的理念,研发了信息—物理融合的能源互联网接入设备,即能源USB系统(EUSBS)。首先,阐述了EUSBS的信息—物理融合内涵和功能,并设计了总体架构和应用拓扑结构。基于此,对其软硬件系统进行研发,重点介绍了其中的硬件架构搭建、五类主要能源USB装置研发和实验测试。软件研发则简要介绍了其总体架构和主要功能模块。此外,以某商业楼宇为对象,通过安装EUSBS和配置分布式设备,对其进行了能量管理分析,初步验证了EUSBS可对接入设备进行实时监测和协调控制,实现了能量流和信息流的双重流通。最后,对EUSBS未来应用进行了展望。 相似文献