impedance angle 中文意思是什麼
impedance angle
解釋
阻抗角-
For the bldcm which has a pseudo - sinusoidal back - emf waveform, this dissertation presents a svpwm control method using six discrete position signals for minimizing the torque ripple. the main aspects for the implementation of this method are analyzed, including the initial orientation of the voltage vector, reasonable choice of the impedance angle and the advance commutation angle, and estimation of the successive rotor positions
針對反電動勢類似正弦的準正弦波反電動勢無刷直流電動機，本文提出一種基於六個離散位置信號的自同步svpwm （電壓空間矢量法）控制方法，用以削弱電磁轉矩脈動，分析了實現這種方法的主要控制環節，包括起動時電壓空間矢量的初始定位，阻抗角與電流超前角的合理選擇以及連續轉子位置的估計等。 -
The real part of the complex impedance decreases with frequency ; the imaginary part of the complex impedance increases with frequency to the maximum, and then decreases with frequency ; and phase angle decreases with frequency increasing
結果發現輝長巖復阻抗的實部隨頻率的增加而減小，而虛部隨頻率增加先增大后減小；相角隨頻率增加而減小。 -
Unified power flow controller ( upfc ) is one of the most powerful and most promising controllers of facts. if we use upfc to control the transmission parameters, terminal voltage, line impedance and phase angle in normal situation and use it to compensate zero sequence and negative sequence currents when one of transmission lines is cut off, we can implement two phases operating in high voltage transmission lines, which can improve stability and reliability for the transmission system
統一潮流控制器（ upfc ）是功能最強、最具發展潛力的靈活交流輸電系統（ facts ）控制器之一，如果在常規條件下，用upfc實現輸電線路的電壓調節、移相、潮流控制、阻尼振蕩等功能，在發生單相永久性接地或單相斷路故障時，由傳統的三相跳閘改為單相跳閘，用upfc的並補來濾除兩端系統的零序和負序電流，用upfc的串補來提高輸電線的傳輸功率，以實現兩相長期運行，那麼輸電系統的穩定性、可靠性將大大提高。 -
The shortcoming of using voltage and power to describe the voltage critical state is analyzed and the load impedance angle is introduced for the critical point of voltage. the ternary analysis method of voltage v, power p and load impedance angle is established
本文首先分析了採用電壓和功率描述電壓臨界狀態的不足，提出了引入負荷阻抗角的三個參數來描述電壓臨界狀態，即電壓v 、功率p和負荷阻抗角的三元分析法。 -
The formation of self - assembled interfacial n - dodecanethiol monolayer and its effect on the corrosion protection of epoxy coating were evaluated using the x - ray photoelectronic spectroscopy, electrochemical impedance spectroscopy, impedance - time transition, and phase angle - time transition method
採用x射線光電子能譜、電化學阻抗譜、阻抗時間譜和相位角時間譜等方法對硫醇自組裝界面層及其對塗層腐蝕防護性能的影響進行了研究。 -
Secondly this paper study the seismic wave when it crosses the interface. when the seismic wave travel from a small wave - impedance into a big wave - impedance, the energy changes with the angle between the ray and interface
當地震波從波阻抗小的介質傳播到波阻抗大的介質時，反射波的能量隨入射角度變化，在臨界角以內反射系數為實數。 -
The term impedance is applicable only to ac circuits. its unit of measurement is the ohm. it has a magnitude as well as phase angle. it is a complex quantity
"感抗"這個術語只適用於交流電路，其測量單位為歐姆。感抗不但有幅值，而且有相角，它是一個復數量。 -
The method of moments is used to analyze and calculate the broadband characters of impedance, voltage satanding wave ratio ( vswr ), gain and radiation pattern of larger angle lpda, and the relation between these characters and the parameter of antenna construction is discussed in this paper. based on analysis and calculation, the antenna is designed and tested, and the measured results are in good agreement with the theoretical calculation
本文採用矩量法分析和計算了對數周期天線在張角較大時，它的阻抗、電壓駐波比、增益及方向圖的寬帶特性，討論了這些特性與天線結構參數之間的關系.根據分析和計算，設計並製作天線進行實驗測試，理論計算和測試結果表明，兩者吻合較好
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