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相关概念视频

Rolling Resistance: Problem Solving01:17

Rolling Resistance: Problem Solving

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Rolling resistance, also known as rolling friction, is the force that resists the motion of a rolling object, such as a wheel, tire, or ball, when it moves over a surface. It is caused by the deformation of the object and the surface in contact with each other, as well as other factors like internal friction, hysteresis, and energy losses within the materials. Rolling resistance opposes the object's motion, requiring additional energy to overcome it and maintain movement. In practical...
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Relative Motion Analysis using Rotating Axes-Problem Solving01:29

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Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
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Three-Dimensional Force System:Problem Solving01:30

Three-Dimensional Force System:Problem Solving

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A three-dimensional force system refers to a scenario in which three forces act simultaneously in three different directions. This type of problem is commonly encountered in physics and engineering, where it is necessary to calculate the resultant force on the system, which can then be used to predict or analyze the behavior of the object or structure under consideration.
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Relative Motion Analysis using Rotating Axes01:25

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Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
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One-Degree-of-Freedom System01:24

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In mechanical engineering, one-degree-of-freedom systems form the basis of a wide range of electrical and mechanical components. Using these models, engineers can predict the behavior of various parts in a larger system, which gives them insight into how different forces interact with each other.
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Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame. The absolute velocity of point B is determined by adding the absolute velocity of point A, the relative velocity of point B in the rotating frame, and the effects caused by the angular velocity within the rotating frame.
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使用DDPG增强剂增强转子角度稳定性,使用大猩猩部队优化输入缩放因子.

Ahmed H Yakout1, Ahmed E B Abu-Elanien2, Hany M Hasanien3,4

  • 1Electrical Power and Machines Department, Faculty of Engineering, Ain Shams University, Cairo, 11517, Egypt.

Scientific reports
|March 24, 2025
PubMed
概括

本研究介绍了一种基于强化学习 (RL) 的新型动力系统稳定器 (PSS),使用深度决定性策略梯度 (DDPG) 来增强转子角度稳定性. 与传统方法相比,RL-PSS表现出优越的短暂稳定性性能.

关键词:
区域间振荡是区域间的振荡.当地转子角度振荡.在PSSSS中,我们可以强化学习是一种强化学习.转子角度稳定性 转子角度稳定性

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科学领域:

  • 电气工程 电气工程
  • 控制系统 控制系统
  • 人工智能的人工智能

背景情况:

  • 转子角度稳定对于动力系统可靠性至关重要.
  • 传统的电力系统稳定器在适应复杂的电网动态方面存在局限性.
  • 强化学习 (RL) 为适应性控制提供了一个有前途的方法.

研究的目的:

  • 开发和评估基于强化学习 (RL) 的动力系统稳定器 (PSS),以提高转子角度稳定性.
  • 为了优化RL代理的性能,使用大猩猩部队优化 (GTO) 算法.
  • 通过各种电力系统测试案例验证拟议的PSS.

主要方法:

  • 使用深度决定性政策梯度 (DDPG) 算法为PSS训练RL代理.
  • 输入特征包括缩放式发电机加速功率,其导数和整数,以及实力.
  • 使用大猩猩部队优化 (GTO) 算法来优化输入观测的缩放因子.
  • 一个离散的奖励功能,专注于发电机加速功率低于一个值.

主要成果:

  • 与基于多带dw速度的pss (mb-pss),基于dw速度的pss (dw-pss) 和基于加速功率的pss (dpa-pss) 相比,拟议的基于RL的pss在模拟中表现出更好的性能.
  • 稳定器表现出增强的短暂稳定性能力,即使在长期故障条件下.
  • 在单机无限总线 (SMIB),Kundur的四机系统和IEEE 39总线的十机系统上进行了模拟.

结论:

  • 开发的基于RL的PSS与DDPG和GTO优化有效地提高了转子角度稳定性.
  • 拟议的方法为电力系统稳定提供了强大而适应性的解决方案.
  • 这种方法在过渡稳定性方面比传统的PSS设计显著改进.