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相关概念视频

Multi-input and Multi-variable systems01:22

Multi-input and Multi-variable systems

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Cruise control systems in cars are designed as multi-input systems to maintain a driver's desired speed while compensating for external disturbances such as changes in terrain. The block diagram for a cruise control system typically includes two main inputs: the desired speed set by the driver and any external disturbances, such as the incline of the road. By adjusting the engine throttle, the system maintains the vehicle's speed as close to the desired value as possible.
In the absence...
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Field Application of Global Positioning System01:28

Field Application of Global Positioning System

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The Global Positioning System (GPS) has become an indispensable tool in fieldwork, offering unparalleled precision and efficiency for surveying, navigation, and infrastructure development. By harnessing signals from a constellation of satellites, GPS receivers determine the location of objects with remarkable speed and accuracy, often completing calculations within a second.Advantages of Modern GPS TechnologyContemporary GPS receivers are designed to meet the practical demands of field...
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Classification of Signals01:30

Classification of Signals

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In signal processing, signals are classified based on various characteristics: continuous-time versus discrete-time, periodic versus aperiodic, analog versus digital, and causal versus noncausal. Each category highlights distinct properties crucial for understanding and manipulating signals.
A continuous-time signal holds a value at every instant in time, representing information seamlessly. In contrast, a discrete-time signal holds values only at specific moments, often denoted as x(n), where...
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Sequence Networks of Rotating Machines01:24

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A Y-connected synchronous generator, grounded through a neutral impedance, is designed to produce balanced internal phase voltages with only positive-sequence components. The generator's sequence networks include a source voltage that is exclusively in the positive-sequence network. The sequence components of line-to-ground voltages at the generator terminals illustrate this configuration.
Zero-sequence current induces a voltage drop across the generator's neutral impedance and other...
125
One-Degree-of-Freedom System01:24

One-Degree-of-Freedom System

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In mechanical engineering, one-degree-of-freedom systems form the basis of a wide range of electrical and mechanical components. Using these models, engineers can predict the behavior of various parts in a larger system, which gives them insight into how different forces interact with each other.
A one-degree-of-freedom system is defined by an independent variable that determines its state and behavior. One example of a one-degree-of-freedom system is a simple harmonic oscillator, such as a...
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Types of Global Positioning System Surveys01:30

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GPS surveying methods vary in application, accuracy, and data collection techniques, catering to diverse surveying and mapping needs. Static GPS, kinematic GPS, and real-time kinematic (RTK) surveying are widely used. Each technique offers distinct advantages.Static GPS involves placing one receiver at a known reference point and another at the target point. It collects exact positional data by observing multiple satellite ranges over an extended period, achieving centimeter-level accuracy for...
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基于循环的Sagnac传感系统的多事件本地化使用机器学习.

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    科学领域:

    • 有光学传感器的感应器.
    • 光纤传感器 光纤传感器
    • 机器学习 机器学习

    背景情况:

    • 精确的事件定位对于管道监控和入侵检测至关重要.
    • 现有的方法在长距离的多事件本地化方面面临挑战.

    研究的目的:

    • 通过实验来证明用于长周边监控的多事件本地化.
    • 应用机器学习技术,特别是深度神经网络 (DNN),用于精确的事件位置.
    • 为了应对在光纤传感器中区分和定位多个同时发生的事件的挑战.

    主要方法:

    • 使用了萨格纳克干扰仪循环传感器,拥有超过100公里的单模光纤.
    • 处理多事件本地化作为250个光纤段的多标签多分类问题.
    • 开发了一个基于模拟数据训练的深度神经网络 (DNN) 模型,使用离散等号变换 (DCT) 降低了复杂性.

    主要成果:

    • 在模拟中实现了99%的准确性,用于在一个段误差内定位单个事件.
    • 证明了95%的准确性定位两个事件中的一个和78%的准确性定位两个事件在一个段误差内.
    • 实验结果验证了模拟结果,证实了该模型在高精度事件定位方面的有效性.

    结论:

    • 提出的基于DNN的方法有效地实现了在长周边光学传感中精确的多事件定位.
    • 该方法对管道监控和入侵检测等应用具有重大前景.
    • 未来的工作可以扩展模型,以检测和定位两个以上的同时发生的事件.