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相关概念视频

Oscillations In An LC Circuit01:30

Oscillations In An LC Circuit

2.3K
An idealized LC circuit of zero resistance can oscillate without any source of emf by shifting the energy stored in the circuit between the electric and magnetic fields. In such an LC circuit, if the capacitor contains a charge q before the switch is closed, then all the energy of the circuit is initially stored in the electric field of the capacitor. This energy is given by
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RLC Circuit as a Damped Oscillator01:30

RLC Circuit as a Damped Oscillator

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An RLC circuit combines a resistor, inductor, and capacitor, connected in a series or parallel combination.
Consider a series RLC circuit. Here, the presence of resistance in the circuit leads to energy loss due to joule heating in the resistance. Therefore, the total electromagnetic energy in the circuit is no longer constant and decreases with time. Since the magnitude of charge, current, and potential difference continuously decreases, their oscillations are said to be damped. This is...
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相关实验视频

Updated: Jul 8, 2025

Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light
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Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light

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具有嵌入式光源的液晶弹性体自振荡器

Yong Yu1, Fan Yang1, Yuntong Dai1

  • 1School of Civil Engineering, Anhui Jianzhu University, Hefei, Anhui 230601, China.

Physical review. E
|December 20, 2023
PubMed
概括
此摘要是机器生成的。

研究人员开发了一种使用液晶弹性体 (LCE) 纤维进行自主周期性光开关的自振弹振荡器. 这种简单,无控制器的系统为软机器人和传感器提供了新的可能性.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 非线性动力学是一种非线性动力学.
  • 软机器人软机器人 软机器人软机器人

背景情况:

  • 定期的光开关对于各种应用非常重要,但通常需要复杂的控制器.
  • 液晶弹性体 (LCE) 是一种对刺激有反应的材料,具有自主启动的潜力.

研究的目的:

  • 使用光学响应的LCE光纤构建和研究一种自振弹振荡器.
  • 在没有外部控制器的情况下实现嵌入式光源的自主定期切换.

主要方法:

  • 一个弹振荡器的制造,包括一个嵌入式光源和一个LCE光纤.
  • 基于已建立的LCE动力学的非线性动态模型的开发.
  • 数字模拟用于分析系统的动态行为和模式.

主要成果:

  • 弹振荡器表现出两种不同的运动模式:自我振荡和静态.
  • 自动振荡是由输入光能和减噪散射之间的平衡维持的.
  • 确定了自我振荡的关键条件以及系统参数对频率和振幅的影响.

结论:

  • 一个简单的,无控制器的,用于周期照明的自振系统被成功演示.
  • 基于LCE的振荡器为软机器人和传感器提供了一种新的设计方法.
  • 该系统为开发更多多样化和自主软电子设备提供了基础.