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相关概念视频

Motion Of A Charged Particle In A Magnetic Field01:22

Motion Of A Charged Particle In A Magnetic Field

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A charged particle experiences a force when moving through a magnetic field. Consider the field to be uniform and the charged particle to move perpendicular to it. If the field is in a vacuum, the magnetic field is the dominant factor determining the motion. Since the magnetic force is perpendicular to the direction of motion, a charged particle follows a curved path. The particle continues to follow this curved path until it forms a complete circle. Another way to look at this is that the...
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Magnetic Field due to Moving Charges01:23

Magnetic Field due to Moving Charges

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A stationary charge creates and interacts with the electric field, while a moving charge creates a magnetic field.
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...
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Absolute Motion Analysis- General Plane Motion01:24

Absolute Motion Analysis- General Plane Motion

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Visualize a drone, with its propellers spinning rapidly, hovering mid-air. The fascinating movements and operations of this drone can be comprehended by applying the principle of general plane motion.
As the drone's propellers rotate, an upward force is generated that counteracts the force of gravity, enabling the drone to lift off from the ground. This initial movement of the drone is along a straight path, representing a form of translational motion. In this phase, every point on the...
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Relative Motion Analysis using Rotating Axes01:25

Relative Motion Analysis using Rotating Axes

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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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Relative Motion Analysis using Rotating Axes-Problem Solving01:29

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.
Here, in order to determine the magnitude of velocity and acceleration for point...
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Relative Motion Analysis using Rotating Axes - Acceleration01:22

Relative Motion Analysis using Rotating Axes - Acceleration

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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.
Time differentiation is...
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Magnetic Resonance Derived Myocardial Strain Assessment Using Feature Tracking
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一个用于磁性运动跟踪的新代算法.

Tobias Schmidt1,2, Johannes Hoffmann1, Moritz Boueke1

  • 1Digital Signal Processing and System Theory, Institute of Electrical Engineering and Information Technology, Faculty of Engineering, Kiel University, Kaiserstr. 2, 24143 Kiel, Germany.

Sensors (Basel, Switzerland)
|November 9, 2024
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的磁运动跟踪算法,用于使用二极管源进行姿势估计. 这种高效的方法以最小的计算能力实现了高精度,适合实时应用.

关键词:
人机界面 人机界面代算法是一种代算法.在本地化,本地化.磁性运动跟踪跟踪 磁性运动跟踪旋转的磁二极体旋转的磁二极体

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Magnetic Tweezers for the Measurement of Twist and Torque
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科学领域:

  • 机器人和人机交互的人机交互
  • 传感器技术和信号处理技术
  • 生物医学工程和运动分析.

背景情况:

  • 运动分析对于虚拟/增强现实和医学诊断至关重要,通常依赖光学或惯性传感器.
  • 磁传感器为现有的运动跟踪系统提供了替代方案或补充,特别是在专门的应用中.
  • 现有的磁运动跟踪系统面临着复杂的本地化算法和高计算需求的挑战.

研究的目的:

  • 提出一种新的,计算效率高的算法,用于使用磁传感器对动力链的姿势估计.
  • 为了利用空间旋转的磁双极源和称为"最大向量"的新功能来改进本地化.
  • 为了将手模拟为动力链,并将磁性相关性与结构信息集成为代姿势估计.

主要方法:

  • 开发了一种基于空间旋转磁双极源的新算法,并提取了一个"最大向量"特征.
  • 导出了"最大向量",位置向量和传感器方向之间的关系.
  • 模拟手作为一种动力链,将磁性相关性和链结构结合在一个代的,低复杂度的算法.

主要成果:

  • 该算法在实时框架中实现,并通过模拟和实验室测试进行验证.
  • 没有运动的测试显示,模拟姿势和估计姿势之间没有显著的偏差.
  • 定期运动测试产生了1°的误差,个人电脑上的计算时间约为每关节3μs.

结论:

  • 拟议的磁运动跟踪算法显示了高精度和低计算复杂性.
  • 该方法适用于实时应用,为传统的运动跟踪系统提供了可行的替代方案.
  • 最初的实验室测试证实了这种创新的磁传感方法的功能和潜力.