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相关概念视频

One-Degree-of-Freedom System01:24

One-Degree-of-Freedom System

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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.
A one-degree-of-freedom system is defined by an independent variable that determines its state and behavior. One example of a one-degree-of-freedom system is a simple harmonic oscillator, such as a...
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Relative Motion Analysis using Rotating Axes-Problem Solving

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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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Magnetic Force01:18

Magnetic Force

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In addition to the electric forces between electric charges, moving electric charges exert magnetic forces on each other. A magnetic field is created by a moving charge or a group of moving charges known as the electric current. A magnetic force is experienced by a second current or moving charge in response to this magnetic field. Fundamentally, interactions between moving electrons in the atoms of two bodies produce magnetic forces between them.
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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.
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Torque Free Motion01:15

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The torque-free motion refers to the movement of a rigid body in space when no external torques are acting upon it. This type of motion can be observed in environments where there are no external forces or frictions, like in outer space. For example, a rotation of Mars in space is a torque-free motion. Mars is an axisymmetric object, meaning it has an axis of symmetry along which it rotates, designated as the z-axis. The rotating frame of reference is defined such that the center of mass of...
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Precession can be demonstrated effectively through a spinning top. If a spinning top is placed on a flat surface near the surface of the Earth at a vertical angle and is not spinning, it will fall over due to the force of gravity producing a torque acting on its center of mass. However, if the top is spinning on its axis, it precesses about the vertical direction, rather than topple over due to this torque. Precessional motion is a combination of a steady circular motion of the axis and the...
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一个磁力驱动的多动作机器人,具有位置/定向传感能力.

Liwen Zhang1, Song Zhao1, Xinzhao Zhou1

  • 1School of Mechanical Engineering and Automation, Beihang University, Beijing, China.

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概括
此摘要是机器生成的。

这项研究介绍了一种新型的薄膜机器人,能够实现多模式运动和精确的姿势感应,用于现场操纵. 这一进步使得在封闭的空间内可以进行隐形控制,这对于医疗治疗等应用至关重要.

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科学领域:

  • 机器人技术 机器人技术 机器人技术
  • 材料科学 材料科学 材料科学
  • 生物医学工程 生物医学工程

背景情况:

  • 微型磁性机器人是需要在狭窄的空间进行现场操纵的.
  • 现有的机器人具有有限的运动模式,缺乏实时姿势感应,阻碍了视线之外的控制.
  • 整合多模式运动和精确的姿势传感仍然是一个重大挑战.

研究的目的:

  • 开发一款具有集成多模式运动和高精度姿势感应能力的薄膜机器人.
  • 为了实现按需的磁化重编程和实时状态检测.
  • 为了在封闭的环境中展示精确的隐形操纵.

主要方法:

  • 设计了一种新的多层结构,其中包括一个磁驱动层和一个传热传感导电层.
  • 磁层的细分加热使磁化重编程和多模式运动成为可能.
  • 传感层的电阻变化允许精确的姿势检测 (位置和方向).

主要成果:

  • 机器人实现了各种运动,包括游泳,滚动,爬行和穿越障碍物在10mT场.
  • 在5mT的场域下,高精度的姿势感应与±3mm的位置和±2.5°的定向精度得到了实现.
  • 成功演示了用于胃药物输送的胃镜机器人,展示了其在医疗治疗中的潜力.

结论:

  • 开发的薄膜机器人成功地集成了多模式运动和精确的姿势感应.
  • 这项技术可以在狭窄,不透明,封闭的空间中进行准确的隐形操作.
  • 该机器人对先进的胃肠道医疗治疗和其他应用具有重大前景.