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相关概念视频

Bode Plots Construction01:24

Bode Plots Construction

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The Bode plot is an essential tool in control system analysis, mapping the frequency response of a system through a magnitude plot and a phase plot, both against a logarithmic frequency axis. To construct a Bode plot, consider the transfer function H(ω):
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Node Analysis for AC Circuits01:14

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Consider an angioplasty system featuring a catheter equipped with a turbine, a critical tool for removing plaque deposits from coronary arteries. This intricate medical device operates using a circuit model reminiscent of a dual-node RLC circuit powered by a current-controlled voltage source.
To unravel the complexities of this system, nodal analysis is employed, a powerful technique founded on Kirchhoff's current law (KCL), which remains valid for phasors. AC circuits can effectively be...
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Mesh Analysis for AC Circuits01:12

Mesh Analysis for AC Circuits

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In the domain of radio communication, the significance of impedance matching must be considered. It is crucial to ensure the efficient transmission of signals between radio transmitters and receivers. Achieving this balance involves using impedance-matching circuits, with one fundamental configuration comprising a resistor, capacitor, and inductor.
The process of harmonizing these impedances begins with a clear understanding of the input and output signals. Once these signals are known, the...
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相关实验视频

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Patient-specific Modeling of the Heart: Estimation of Ventricular Fiber Orientations
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体阻抗对内电压的影响 心脏双极旋转器的映射

Estela Sánchez-Carballo1, Francisco M Melgarejo-Meseguer1, José Luis Rojo-Álvarez1,2

  • 1Department of Signal Theory and Communications, Universidad Rey Juan Carlos, Fuenlabrada, Madrid, Spain.

Annual Modeling and Simulation Conference (ANNSIM). Annual Modeling and Simulation Conference (Online)
|February 27, 2026
PubMed
概括

心脏旋转器,鼓动的驱动器,可以在身体表面上检测到. 这项研究表明,干阻抗特性显著影响电压映射,使转子检测成为可能.

关键词:
双极体是双极体,它们是双极体.有限元素方法的有限元素方法.心肌旋转器的旋转器非侵入性地图的绘制.电压映射的电压映射

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科学领域:

  • 生物物理学的生物物理.
  • 计算生物学 计算生物学
  • 心脏电生理学 心脏电生理学

背景情况:

  • 心脏旋转器是电活动的自我维持模式,被认为是心房动和心室动的驱动因素.
  • 干电气特性对这些旋转器表面表现的影响还不太清楚.

研究的目的:

  • 通过使用计算模拟来概念性地证明干阻抗特性如何影响心脏旋转器的电压分布.
  • 为了研究电导率和电容对旋转丝在机身表面可见性的影响.

主要方法:

  • 从胸部CT数据创建了一个计算的干模型.
  • 心肌旋转器被建模为双极,具有相反的共弦电位波.
  • 用有限元方法解决准静电和阻抗形式主义,用于电压和相位分布模拟.

主要成果:

  • 在准静电模拟中,旋转器丝在车身表面上是看不到的.
  • 使用阻抗形式主义,旋翼丝在电位和相位图中在体表面上变得明显.
  • 模拟突出了干阻抗特性对表面电压模式的显著影响.

结论:

  • 干阻抗特性对于准确地绘制和检测心脏旋转器至关重要.
  • 结合阻抗效应的计算建模可以改善非侵入性检测动驱动器.
  • 了解这些特性对于开发心律失常的有效诊断工具至关重要.