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相关概念视频

Time and frequency -Domain Interpretation of Phase-lag Control01:21

Time and frequency -Domain Interpretation of Phase-lag Control

115
Phase-lag controllers are widely used in control systems to improve stability and reduce steady-state errors. A dimmer switch controlling the brightness of a light bulb serves as a practical example of phase-lag control, gradually adjusting the bulb's brightness. Mathematically, phase-lag control or low-pass filtering is represented when the factor 'a' is less than 1.
Phase-lag controllers do not place a pole at zero, but instead influence the steady-state error by amplifying any...
115
Time and frequency -Domain Interpretation of Phase-lead Control01:24

Time and frequency -Domain Interpretation of Phase-lead Control

102
Phase-lead controllers are commonly used in various control systems to enhance response speed and stability. Adjusting the brightness on a television screen offers a practical example of phase-lead control. When contrast is enhanced, a phase-lead controller is employed. Mathematically, phase-lead control is identified when the first parameter is smaller than the second.
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
102

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相关实验视频

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Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
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针对IEEE 802.15.4e的应用程序意识调度,使用软件定义的无线传感器网络切片使用时间隔离的通道跳转.

Tarek Sayjari1, Regina Melo Silveira1, Cintia Borges Margi1

  • 1Escola Politécnica, Universidade de São Paulo, São Paulo 05508010, Brazil.

Sensors (Basel, Switzerland)
|August 26, 2023
PubMed
概括

应用程序意识 (AA) 调度方法通过隔离流量以提高服务质量 (QoS) 来增强软件定义的无线传感器网络 (SDWSNs). 这种方法可以提高网络效率和可扩展性,而不需要额外的硬件.

关键词:
交通隔离应用程序 交通隔离网络切片是指网络的切片.服务质量服务的质量.软件定义的无线传感器网络时间间隔的频道跳转.

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科学领域:

  • 计算机科学 计算机科学
  • 网络化 网络化 网络化
  • 无线传感器网络 无线传感器网络

背景情况:

  • 软件定义无线传感器网络 (SDWSNs) 提供了增强的灵活性和可编程性.
  • 采用IEEE 802.15.4e的时间间隔通道跳转 (TSCH) 与SDWSNs一起使用,通过切片来提高网络效率.
  • 在SDWSNs中提供可扩展的服务质量 (QoS) 仍然是一个挑战.

研究的目的:

  • 为SDWSNs引入一种新的应用意识 (AA) 调度方法.
  • 为应对在可扩展SDWSNs中维护 QoS 的挑战.
  • 为了使网络可扩展性使用共享的时间区,而无需额外的硬件.

主要方法:

  • 拟议的应用程序意识 (AA) 调度方法隔离不同的流量类型,并动态地适应 QoS 要求.
  • 使用IT-SDN框架评估了AA方法.
  • 通过将节点数量变化至225个,并考虑多达四个具有不同QoS需求 (交付速度和延迟) 的应用程序来评估性能.

主要成果:

  • 与应用程序流量隔离 (ATI) 方法相比,AA方法显著提高了高达28%的交付率,并减少了高达57%的延迟.
  • 该AA方法成功满足了高达225个节点的92%交付率要求.
  • 一个900毫秒的延迟要求达到了144个节点,即使有四个并发的应用程序.

结论:

  • 应用程序意识 (AA) 调度方法是第一个支持使用共享时间区的网络可扩展性,同时保持应用程序 QoS 级别.
  • AA调度有效地隔离流量,并适应动态的 QoS 需求,优于现有的方法.
  • 这种方法为可扩展和高效的SDWSN管理提供了可行的解决方案,并保证了QoS.