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相关概念视频

Time-Domain Interpretation of PD Control01:07

Time-Domain Interpretation of PD Control

178
Proportional-Derivative (PD) control is a widely used control method in various engineering systems to enhance stability and performance. In a system with only proportional control, common issues include high maximum overshoot and oscillation, observed in both the error signal and its rate of change. This behavior can be divided into three distinct phases: initial overshoot, subsequent undershoot, and gradual stabilization.
Consider the example of control of motor torque. Initially, a positive...
178
Feedback control systems01:26

Feedback control systems

419
Feedback control systems are categorized in various ways based on their design, analysis, and signal types.
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
419
PD Controller: Design01:26

PD Controller: Design

349
In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
349
Open and closed-loop control systems01:17

Open and closed-loop control systems

993
Control systems are foundational elements in automation and engineering. They are broadly categorized into open-loop and closed-loop systems. These classifications hinge on the presence or absence of feedback mechanisms, significantly influencing the system's performance, complexity, and application.
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
993
Distributed Loads: Problem Solving01:21

Distributed Loads: Problem Solving

731
Beams are structural elements commonly employed in engineering applications requiring different load-carrying capacities. The first step in analyzing a beam under a distributed load is to simplify the problem by dividing the load into smaller regions, which allows one to consider each region separately and calculate the magnitude of the equivalent resultant load acting on each portion of the beam. The magnitude of the equivalent resultant load for each region can be determined by calculating...
731
Control Systems01:10

Control Systems

1.4K
Control systems are everywhere in contemporary society, influencing diverse applications from aerospace to automated manufacturing. These systems can be found naturally within biological processes, such as blood sugar regulation and heart rate adjustment in response to stress, as well as in man-made systems like elevators and automated vehicles. A control system is essentially a network of subsystems and processes that collaboratively convert specific inputs into desired outputs.
At the heart...
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在DoS攻击下,非线性网络控制系统的数据驱动模型免费的自适应动态编程弹性控制.

Mei Zhong, Jiancheng Zhang, Gang Zheng

    IEEE transactions on cybernetics
    |August 19, 2025
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    概括
    此摘要是机器生成的。

    本研究引入了一个自适应动态编程 (ADP) 控制方案,以增强网络控制系统 (NCS) 对拒绝服务 (DoS) 攻击的安全性. 新方法优化了对动态攻击的控制,提高了系统的弹性和性能.

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    科学领域:

    • 计算机科学 计算机科学
    • 控制工程 控制工程 控制工程
    • 网络安全 网络安全

    背景情况:

    • 现有的拒绝服务 (DoS) 攻击补偿方法与动态场景作斗争.
    • 无模型的自适应控制缺乏优化和恒定参考信号支持.
    • 网络控制系统 (NCS) 需要加强对复杂的网络威胁的弹性.

    研究的目的:

    • 开发一个数据驱动的自适应动态编程 (ADP) 弹性控制方案,用于NCS在周期性DoS攻击下.
    • 解决现有方法在处理时间变化的参考信号和优化控制方面的局限性.
    • 为了提高跟踪性能,并减少在动态DoS攻击期间的退化.

    主要方法:

    • 实施一个ADP方法,修改性能指数,以实现最佳的控制器导出.
    • 引入动态惩罚因子,以加快错误的趋同.
    • 设计一个使用ADP和时间变化的信号控制增量补偿机制的设计.

    主要成果:

    • 拟议的ADP计划实现了全球最佳控制.
    • 动态惩罚因子提高了收速度.
    • 补偿机制有效地减少了在时间变化的条件下性能恶化.
    • 理论证明证实了错误的趋同.

    结论:

    • 开发的基于ADP的弹性控制方案显著提高了NCS安全性和对DoS攻击的性能.
    • 与现有方法相比,该策略提供了优越的跟踪性能,特别是在动态攻击场景中.
    • 这种方法提供了一个强大的解决方案,以确保NCS在出现周期性DoS威胁的情况下.