• Combined with impedance concept, a method for on line structure health monitoring based on self sensing piezoelectric patches, which are bonded on the surface of the structure, is presented.

    利用驱动、自传感特性压电陶瓷粘贴外部结构表面结合动态阻抗概念,提出了种机电耦合的在线压电阻抗技术用于结构健康诊断

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  • Because the impedance fault location method is easily influenced by the factor such as fault resistance, transformer error and asymmetrical line configuration, the fault location accuracy is lower.

    由于阻抗过渡电阻互感器误差线路结构不对称因素影响,所以测距精度高。

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  • Most line drivers with low differential output impedance will also have inherently low common-mode output impedances, so the low impedance arms of the bridge are almost always at the driver.

    差动输出阻抗绝大多数线路驱动器同时固有地有低的共模输出阻抗这样,低阻抗几乎无一例外地位驱动器一侧。

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  • The dotted line connecting the tops of the two capacitors represents the low coil impedance to ac signals.

    两个电容顶部虚线表示切换交流信号时线圈阻抗

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  • When the dominant mode TE10 is propagated alone in the rectangular waveguide, expressions for the real and imaginary parts of the input impedance seen by the coaxial line are derived.

    波导只传输(te_(10)模)时,求得从同轴线看去输入阻抗表达式

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  • In this paper, we present the analysis of multifurcated waveguides by the transmission line model and impedance transformation technique.

    本文利用波导传输线模型阻抗变换技术分析了多分叉波导的性质。

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  • I have studied the impedance-matching of RF transmission line between the antenna and the GPS module.

    重点分析介绍研究了GPS天线到接收模块GPS信号输入端之间射频传输线阻抗匹配问题。

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  • The model uses the effective impedance of the microstrip line as the value of matched resistive load and assign it into the RL mesh region in a proper proportion.

    模型将微带线有效阻抗作为匹配负载电阻然后适当比例分布端接面的网格

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  • It is thoroughly considered in this new method that harmonic attenuation, reactive power compensation, mistuning, background harmonic and resonance with power line impedance.

    方法全面地考虑谐波治理、无补偿背景谐波、失电网阻抗的串并联谐振等问题。

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  • It is popular used in impedance test of line that will detect and find the exact location of faults i. e. of broken, mixture and soakage of wires.

    方式广泛适用线路阻抗测试迅速测量出电缆的断线、线、浸水等各种故障具体地点

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  • The design of reliable high speed communication systems for power line communication (PLC) requires an accurate knowledge of such channel specific characteristics as attenuation, impedance and noise.

    为了设计基于电力线通信( PLC)高速可靠通信系统必须了解耗、阻抗噪声电力线信道特性

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  • This paper analyses the rule of variations measuring impedance of distance relay when phase to phase fault occurs between two lines on double circuit line on the same pole (DLSP).

    理论上分析了并架双回线线不接地故障距离继电器测量阻抗变化规律

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  • The aim of the paper is to receive nodal impedance matrix by adding - branch line algorithm and admittance matrix algorithm, to analyze the effect of them, and to provide the models.

    使用了支路追加法导纳矩阵逆法形成节点阻抗矩阵,给出两种算法数学模型分析了算法各自的特点和优势。

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  • Applying feedforward control of harmonic voltage to hybrid active power filter of finite harmonic impedance can restrain line harmonic voltage.

    有限阻抗型混合有源电力滤波器应用电压谐波前馈控制加强对网侧电压的谐波抑制

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  • The earthing method of the metal sheath varies somewhat in different cable lengths, which affects greatly line parameters, especially zero sequence impedance.

    对于不同长度电缆线路金属套的接地方式不尽相同,从而对电缆线路参数尤其是阻抗将产生较大影响

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  • The second effect is the rise in voltage resulting from the capacitive current of the line flowing through the source (generator) impedance.

    第二影响线路电容电流流过电源,阻抗引起电压升高。 收藏。

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  • The axial cavum measurement device was used to simulate the input impedance of the body antenna based on the theory of long line.

    本文基于长线理论轴线测量装置模拟天线输入阻抗值,使引信同轴线测量装置中其工作状态和自由空间一样。

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  • The numerical results were obtained in a table by solving the combined equation of transmission line impedance transfer equation and terminal input impedance expression in gas capacitance.

    通过传输线阻抗转移公式终端输入阻抗隙电容表达式方程得出数值结果

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  • Results were also run for different high (relative to the line impedance) impedance values, including 900 ohms.

    结果不同(相对线路阻抗)的阻抗运行了,包括900欧姆。

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  • When using frequency sweep meter to measure the input impedance of antenna, the balanced - unbalanced transformer must be connected between coaxial transmission line and antenna.

    测量天线输入阻抗时,在同轴传输线天线平衡—不平衡变换器

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  • The analysis shows that the measured impedance at the head of the line is not proportional to the fault distance when a three-phase fault occurs at the end of the line.

    分析表明线路末端三相故障,线路端的测量阻抗与故障距离成正比

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  • An adaptive impedance matching system model for power line communication system was proposed.

    提出一种自适应阻抗匹配系统

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  • This paper discusses the change of discharge properties due to mismatch effect between transmission line and discharge impedance in electron beam controlled discharge gas lasers.

    本文讨论电子束控制放电激光器中,由于传输线放电阻抗配所引起放电特性变化

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  • The fir st two methods have low precisions for influence oft these cases : line parameters , fault point grounding impedance , operating mode of power system.

    两种方法因受一些情况例如参数故障接地阻抗运行模式影响具有较低精确度,而波法具有较高的精确性。

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  • Circuitry is impedance protected from line conducted voltage and current transients and surges.

    电路免受线保护阻抗举办电压当前瞬间和浪涌。

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  • The process of adjusting impedance so that the input impedance of an antenna equals or approximates the characteristic impedance of its transmission line over a specified range of frequencies.

    天线匹配指定频率范围内调整阻抗使得天线输入阻抗等于大致等于发射线路特性阻抗的过程

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  • This system can measure power line impedance accurately using a new arithmetic, and can adaptively match the power line impedance.

    系统给出新的阻抗测量算法,并通过选择补偿电感值变压器变比的方式使电力线阻抗维持在恒定的值上。

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  • This system can measure power line impedance accurately using a new arithmetic, and can adaptively match the power line impedance.

    系统给出新的阻抗测量算法,并通过选择补偿电感值变压器变比的方式使电力线阻抗维持在恒定的值上。

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