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.
利用自驱动、自传感特性的压电陶瓷片，粘贴在外部结构的表面，结合动态阻抗的概念，提出了一种机电耦合的在线压电阻抗技术用于结构健康诊断。
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.
由于阻抗法易受过渡电阻、互感器误差、线路结构不对称等因素的影响，所以测距精度不高。
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.
有低的差动输出阻抗绝大多数的线路驱动器，同时也固有地有低的共模输出阻抗，这样，低阻抗桥臂几乎无一例外地位于驱动器一侧。
The dotted line connecting the tops of the two capacitors represents the low coil impedance to ac signals.
两个电容顶部的虚线表示切换交流信号时的线圈阻抗。
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.
当波导只传输主模(te_(10)模)时，求得从同轴线看去的输入阻抗的实部和虚部表达式。
In this paper, we present the analysis of multifurcated waveguides by the transmission line model and impedance transformation technique.
本文利用波导的传输线模型及阻抗变换技术，分析了多分叉波导的性质。
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的阻抗匹配问题。
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.
该模型将微带线的有效阻抗作为匹配负载电阻，然后按适当的比例分布到端接面的网格中。
It is thoroughly considered in this new method that harmonic attenuation, reactive power compensation, mistuning, background harmonic and resonance with power line impedance.
该方法较全面地考虑了谐波治理、无功补偿、背景谐波、失谐、与电网阻抗的串并联谐振等问题。
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.
该方式广泛适用于线路的阻抗测试，能迅速测量出电缆的断线、混线、浸水等各种故障的具体地点。
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）的高速可靠通信系统，必须了解衰耗、阻抗、噪声等电力线信道特性。
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).
从理论上分析了同杆并架双回线跨线不接地故障时距离继电器测量阻抗的变化规律。
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.
使用了支路追加法和导纳矩阵求逆法来形成节点阻抗矩阵，给出了两种算法的数学模型，分析了算法各自的特点和优势。
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中应用电压谐波前馈控制，能加强对网侧电压的谐波抑制。
The earthing method of the metal sheath varies somewhat in different cable lengths, which affects greatly line parameters, especially zero sequence impedance.
对于不同长度的电缆线路其金属护套的接地方式亦不尽相同，从而对电缆线路参数，尤其是对零序阻抗将产生较大的影响。
The second effect is the rise in voltage resulting from the capacitive current of the line flowing through the source (generator) impedance.
第二个影响是线路电容电流流过电源，阻抗引起的电压升高。 收藏。
The axial cavum measurement device was used to simulate the input impedance of the body antenna based on the theory of long line.
本文基于长线理论用同轴线测量装置模拟弹体天线的输入阻抗值，使引信在同轴线测量装置中其工作状态和自由空间一样。
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.
通过解传输线阻抗转移公式和终端输入阻抗的气隙电容表达式的联立方程得出了数值结果。
Results were also run for different high (relative to the line impedance) impedance values, including 900 ohms.
此结果也在不同(相对于线路阻抗)的阻抗值上运行了，包括900欧姆。
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.
用扫频仪测量天线的输入阻抗时，在同轴传输线与天线间应按平衡—不平衡变换器。
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，线路末端三相故障时，线路首端的测量阻抗不与故障距离成正比。
An adaptive impedance matching system model for power line communication system was proposed.
提出了一种自适应阻抗匹配系统。
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.
本文讨论了在电子束控制放电激光器中，由于传输线与放电阻抗失配所引起的放电特性的变化。
The fir st two methods have low precisions for influence oft these cases : line parameters , fault point grounding impedance , operating mode of power system.
前两种方法因受一些情况例如参数、故障点接地阻抗、运行模式等影响而具有较低的精确度，而行波法具有较高的精确性。
Circuitry is impedance protected from line conducted voltage and current transients and surges.
电路是免受线保护的阻抗被举办的电压和当前瞬间和浪涌。
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，调整阻抗使得天线的输入阻抗等于或大致等于其发射线路特性阻抗的过程。
This system can measure power line impedance accurately using a new arithmetic, and can adaptively match the power line impedance.
该系统给出了新的阻抗测量算法，并通过选择补偿电感值和变压器变比的方式使电力线阻抗维持在恒定的值上。
This system can measure power line impedance accurately using a new arithmetic, and can adaptively match the power line impedance.
该系统给出了新的阻抗测量算法，并通过选择补偿电感值和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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