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相关概念视频

Phase-lead and Phase-lag Controllers01:22

Phase-lead and Phase-lag Controllers

Understanding the working function of different types of controllers can be illustrated with practical analogies, such as adjusting a stereo's volume equalizer. Cranking up the bass involves a phase-lead controller, which functions as a high-pass filter, while increasing the treble uses a phase-lag controller, which acts as a low-pass filter. PD controllers, similar to high-pass filters, enhance the system's response to high-frequency components. PI controllers, akin to low-pass filters, manage...
Time and frequency -Domain Interpretation of Phase-lag Control01:21

Time and frequency -Domain Interpretation of Phase-lag Control

Phase-lag controllers are widely used in control systems to improve stability and reduce steady-state errors. A dimmer switch controlling the brightness of a light bulb serves as a practical example of phase-lag control, gradually adjusting the bulb's brightness. Mathematically, phase-lag control or low-pass filtering is represented when the factor 'a' is less than 1.
Phase-lag controllers do not place a pole at zero, but instead influence the steady-state error by amplifying any finite,...

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Optical Control of Living Cells Electrical Activity by Conjugated Polymers
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Published on: January 28, 2016

低 (亚-1伏) 半波电压聚合物电光调节器,通过控制色孔形状来实现.

Shi1, Zhang, Zhang

  • 1TACAN Corporation, 2330 Faraday Avenue, Carlsbad, CA 92008, USA. Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA. Center for Photonic Technologies, Department o.

Science (New York, N.Y.)
|February 7, 2001
PubMed
概括

新的有机染色体显著降低了电光调制器中的驱动电压. 这一进步为下一代电信和使用聚合物材料的信息处理铺平了道路.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 光电学是指光电子产品.
  • 有机化学 有机化学

背景情况:

  • 电光调制器 (EO) 对于将电信号编码到光纤传输中至关重要.
  • 传统的聚合物和酸调节器中的高驱动电压通过影响增益和噪声水平来限制性能.
  • 现有的调制器通常在5伏左右的半波电压下工作.

研究的目的:

  • 开发新的有机染色体,以尽量减少分子间静电相互作用.
  • 使用这些修改后的染色体,制造具有显著降低半波电压的EO调节器.
  • 探索高级聚合物材料在高性能光电子设备中的潜力.

主要方法:

  • 有机染色体的固体修饰,以减少分子间静电相互作用.
  • 将修改后的染色体纳入聚合物主体,用于EO调节器制造.
  • 使用光学推拉抛光和驱动技术,进一步降低半波电压.

主要成果:

  • 在1318nm的电信波长下,实现了0.8伏的半波电压的EO调制器.
  • 证明了一半波电压相互作用长度的产物为2.2伏-厘米.
  • 报告了超过110千兆赫的异常带宽和与半导体电路的兼容性.

结论:

  • 纯体修饰的有机染色体为低压EO调节器提供了可行的途径.
  • 聚合物材料在下一代电信,信息处理和无线电频率分配方面显示出重大前景.
  • 开发的调制器表现出高性能,包括低压和高带宽,适合高级应用.