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相关概念视频

Phase-lead and Phase-lag Controllers01:22

Phase-lead and Phase-lag Controllers

192
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...
192
Beams with Symmetric Loadings01:15

Beams with Symmetric Loadings

216
The moment-area method is an analytical tool used in structural engineering to determine the slope and deflection of beams under various loads. Consider a cantilever with a concentrated load and moment at the free end. The first step is constructing a free-body diagram to calculate the reactions at the fixed end. Next, the bending moment diagram is plotted to visualize how the bending moment varies along the beam's length, focusing on points where the bending moment equals zero.
The M/EI...
216
Time and frequency -Domain Interpretation of Phase-lead Control01:24

Time and frequency -Domain Interpretation of Phase-lead Control

101
Phase-lead controllers are commonly used in various control systems to enhance response speed and stability. Adjusting the brightness on a television screen offers a practical example of phase-lead control. When contrast is enhanced, a phase-lead controller is employed. Mathematically, phase-lead control is identified when the first parameter is smaller than the second.
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
101

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相关实验视频

Updated: Jul 16, 2025

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
12:14

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Published on: August 12, 2013

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内部主动相锁连贯光束组合系统的数值模拟.

Kaikai Jin, Hongxiang Chang, Jinhu Long

    Applied optics
    |September 14, 2023
    PubMed
    概括

    纤维激光器的连贯光束组合 (CBC) 使用内部相控来实现高输出功率和光束质量. 这种技术使得紧,可扩展的系统能够有效地结合数百个激光束.

    科学领域:

    • 光学和光子学 在光学和光子学.
    • 激光物理 激光物理
    • 纤维激光技术的使用

    背景情况:

    • 连贯光束组合 (CBC) 对于具有优异光束质量的高功率光纤激光器至关重要.
    • 传统的CBC相控方法通常使用外部光束分割器,限制可扩展性和紧性.
    • 内部相位控制为相位锁定光纤激光阵列提供了更集成的方法.

    研究的目的:

    • 设计和模拟一个紧的连贯光束组合 (CBC) 系统,使用内部相锁技术.
    • 调查级联技术的有效性,以提高CBC系统的相控带宽.
    • 通过拟议的内部相控方法来证明大量激光束组合的潜力.

    主要方法:

    • 设计了一种新型的CBC系统,采用内部相锁机制.
    • 数字模拟用于分析相位不匹配和控制动态.
    • 应用级联技术来增加相控带宽.
    • 系统的建模,用于组合数百个单独的光纤激光束.

    主要成果:

    • 内部相锁技术允许在自由空间输出之前获取相位不匹配信息.
    • 级联技术显著增加了相控带宽.
    • 数字模拟证实了数百个激光束的有效组合.

    更多相关视频

    A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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    Generation and Coherent Control of Pulsed Quantum Frequency Combs
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    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
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    Published on: August 12, 2013

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    A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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    A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

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  • 拟议的方法是紧的,可扩展到更大的激光阵列.

    • 结论:

    • 开发的内部相位控制技术是紧,可扩展的连贯光束组合 (CBC) 系统的可行和有效方法.
    • 模拟结果为先进的CBC系统的实际设计和实施提供了坚实的基础.
    • 这种方法在通过光纤激光聚合实现高功率,高质量的激光束方面取得了重大进展.