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相关概念视频

Induction01:16

Induction

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An emf is induced when the magnetic field in a coil is changed by pushing a bar magnet into or out of the coil. emfs of opposite signs are produced by motion in opposite directions, and the directions of emfs are also reversed by reversing poles. The same results are produced if the coil is moved rather than the magnet—it is the relative motion that is important. The faster the motion, the greater the emf. Additionally, there is no emf when the magnet is stationary relative to the coil.
A...
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Force On A Current Loop In A Magnetic Field01:17

Force On A Current Loop In A Magnetic Field

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Magnetic forces on wires carrying current are most frequently applied in motors. A DC motor is a device that converts electrical energy into mechanical work. In motors, wire loops are enclosed in a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate. The direction of the current is reversed once the loop's surface area is lined up with the magnetic field, causing a constant torque on the loop. During the process,...
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Magnetic flux depends on three factors: the strength of the magnetic field, the area through which the field lines pass, and the field's orientation with respect to the surface area. If any of these quantities vary, a corresponding variation in magnetic flux occurs. If the area through which the magnetic field lines are passing changes, then the magnetic flux also changes. This change in the area can be of two types: the flux through the rectangular loop increases as it moves into the...
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相关实验视频

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Origami Inspired Self-assembly of Patterned and Reconfigurable Particles
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遥控可编程的自折叠原木弦使用磁感应加热.

Quentin Lahondes1, Shuhei Miyashita1,2

  • 1Automatic Control and Systems Engineering, The University of Sheffield, Sheffield, United Kingdom.

Frontiers in robotics and AI
|September 16, 2024
PubMed
概括
此摘要是机器生成的。

研究人员使用磁感应加热开发了一种用于毫米尺度原木结构的顺序自我折叠的新方法. 这项技术使复杂形状的远程无折叠成为可能,为微型机器人铺平了道路.

关键词:
生物模拟学是一种生物模拟学.电磁感应加热 电磁感应加热原始结构的结构是原始的.自行折叠的结节.序列式自折叠式自折叠式热响应式热响应式

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科学领域:

  • 材料科学 材料科学 材料科学
  • 机器人技术 机器人技术 机器人技术
  • 微型工程是微型工程.

背景情况:

  • 手动将平面结构折叠成体积物体在亚厘米尺度上是不切实际的.
  • 智能材料为自动折叠提供解决方案,但受到复杂性和序列控制的限制.
  • 现有的方法往往需要直接接触或受到材料种类和折叠序列的限制.

研究的目的:

  • 提出并展示了一种使用磁感应加热的毫米尺度原木连续自我折叠的方法.
  • 开发一种磁热模型,用于设计和预测自折结构的折叠序列,包括空手结.
  • 通过各种复杂结构的成功自我折叠来验证方法.

主要方法:

  • 使用千赫兹频率的磁感应加热和3.2mT用于远程,顺序折叠.
  • 开发了一个磁热模型来预测和设计折叠序列.
  • 优化金属工件的表面,位置和几何形状,以控制自折叠.

主要成果:

  • 成功演示了毫米尺度原木结构的顺序自我折叠.
  • 用各种例子验证了该方法:一个花生,一个盒子,一个模仿Mimosa pudica的叶子,以及一个空手结.
  • 在受限制的环境中实现了远程和无自折叠.

结论:

  • 拟议的方法使微型原木结构能够精确,顺序地自我折叠.
  • 磁热模型有助于设计和预测复杂的折叠行为.
  • 这种方法对开发微型自折叠的原木机器人有很大的潜力.