| 1. | Eic : electrical impedance characteristics
电阻抗特性 |
| 2. | Impedance characteristics and specific resistance of electrochemically treated cvd sic fibers
纤维阻抗特性及电阻率测量 |
| 3. | Following that , the method and step of cold - test simulation with ansys was given . the dispersion characteristic and interaction impedance characteristic curve figures were plotted after the simulation of
文中也将ansys模拟结果与mafia模拟结果进行了对比,验证了ansys模拟的高精度和高效率的特点。 |
| 4. | A system scheme of digital image collection plus spread spectrum communication ( abbreviated as ssc ) is presented in this paper after a full analysis of noise characteristics , attenuating characteristics and impedance characteristics of low - voltage power lines
本文首先介绍了低压电力线的噪声特性、衰减特性和阻抗特性，然后提出一种数字图像采集+扩频传输的系统总体方案。 |
| 5. | In this paper based on the test and simulation of different power networks , the reliability and practicability of carrier communications are discussed and the impedance characteristic , transmission characteristic , the effect of noise on the low - voltage are also analyzed
本文基于对不同电网环境下的载波传输情况进行系统综合测试和仿真的基础上，针对载波通信的可靠性、实用性进行了探讨。分析了低压电力网的阻抗特性、传输衰减特性以及噪声特性影响。 |
| 6. | So the higher output power can be achieved . the analysis of dispersion characteristic and interaction impedance characteristic was shown . then the derivation of boundary condition for dispersion characteristic simulation and the theory derivation of interaction impedance characteristic computed with dispersion characteristic result were all shown
文中介绍了色散特性和耦合阻抗特性的分析方法,给出了色散特性模拟时边界条件的推导和由色散特性结果计算耦合阻抗特性的理论推导过程,并具体给出了用ansys模拟冷测特性的方法和步骤。 |
| 7. | Presents the simple but highly reliable on - line detection of ultrasonic transducer clamping capacitance based on the impedance circuit model constructed through the impedance characteristics of the ultrasonic transducer under triple harmonics , and concludes from experimental results that this method can be used to effectively detect the variation of clamping capacitance while the transducer is operating , and the matching inductance can be dynamically regulated according to the results of detection , and dynamic matching can therefore be achieved in the real sense at the end of the transducer to improve the overall performance of the whole system
为了解决大功率超声应用的换能器电端匹配问题，分析了超声波换能器在谐振频率三次谐波下的阻抗特性，给出了超声换能器三次谐波下的阻抗电路模型.并根据阻抗电路模型建立了对超声换能器的夹持电容实现在线检测简单、可靠性高的方法，实验证明该方法有效的.该方法可以在换能器工作过程中随时检测夹持电容的变化，根据检测结果对匹配电感进行动态调整，实现真正意义上的换能器电端的动态匹配，从而大大改善匹配质量，提高系统的工作性能 |
| 8. | System scheme of speech coding plus spread spectrum communication was presented based on a full analysis of noise characteristic , attenuation characteristic and impedance characteristic of low - voltage power line . spread spectrum carrier ( abbreviated as ssc ) technology is adopted to overcome problems existing in signal transmission over power line . high quality , low rate mbe compression algorithm was used to complete speech encoding and decoding
在对低压电力线路的噪声特性、衰减特性和阻抗特性三个方面充分分析的基础上，本文提出一种语音编码+扩频传输的系统总体方案，采用扩频载波( spreadspectrumcarrier ，缩写为ssc )技术克服电力线传输信号存在的问题，采用语音合成质量高并具有较低码率的mbe压缩算法完成语音信号的编解码。 |
| 9. | The simulation results are compared to the normal dipole antenna in order to observe the influence of fractal and investigate the effect of antenna miniaturization . the relationship between miniaturization and fractal dimension is researched . the koch and 3 / 2curve fractal unit are applied to yagi - uda antenna , the performance like impedance characteristic and radiation pattern is simulated by cst microwave studio ?
对其阻抗特性及辐射方向图进行了仿真计算,并分别与未应用分形的普通半波振子天线相比较,观察分形对天线性能的影响,以检验分形天线小型化的效果,研究了尺寸缩减性与其分形结构的分形维数之间的关系。 |
| 10. | At first , the average - current controlled boost pfc and buck converter small - signal model are estabished . the average - current controlled boost pfc and buck converter prototype are designed and manufactured . on basis of the small - signal model , the two - stage i / o impedance characteristic and miller effect are analyzed by simulation with matlab software
其次单独设计了前级、后级变换器样机，在两级模型基础上，应用matlab软件仿真分析了前后级变换器对接处的i o阻抗特性和密勒效应，运用奈奎斯特判据对两级结构宽输出电压范围的功率因数校正器的稳定性进行了分析设计。 |
