switching wave 中文意思是什麼

switching wave 解釋
換接信號
  • switching : 變換
  • wave : n 〈美海軍〉女志願軍人〈見 WAVES 條〉。n 1 波浪；碎浪； 〈the wave（s）〉 〈詩〉海。2 波動；波狀...
  1. This thesis built the models computing the working frequency over - voltage " operation over - voltage for 220kv fugai transmission line, calculates and analyzes working frequency over - voltage " operation over - voltage using emtp program and provides reasonable protection measures for the transmission line. furthermore, regulations method, traveling wave method and striking distance method are used to study and compare lightning - enduring capabilities of different types of pole in power transmission lines aiming at the fact that the lightning strike switching rate of 220kv fugai line is higher

    本文分別建立了計算220kv復蓋線路的工頻電壓升高及操作過電壓的計算模型，利用emtp程序對220kv復蓋線路工頻電壓升高、投切空線過電壓、投切空變過電壓、單相故障過電壓進行計算分析，並提出合理的防護措施。
  2. Superior frequency characteristics shortest recovery time, realize the switching of the circuit, complete functions such as open and close, clip wave, wave detector, high - frequency rectifier, logic control, which fit for all kinds of digital circuits and analog circuits

    具有良好的高頻開關特性反向恢復時間短，可實現對電路開和關的控制功能，可完成開關限幅檢波高頻整流邏輯控制等功能，適用於各類數位電路類比電路。
  3. There are five parts are as follows : in part one, the concept of switching function is introduced first to establish the nonlinear mathematical model of the induction motor variable frequency speed adjustment system which is fed by a sine pulse width modulated ( spwm ) inverter and takes the effect of the main magnetic circuit saturation into consideration, then the low frequency oscillation of the system is simulated according to the model. next, from the view point of energy conversion of the inverter - induction system, a criterion for the low frequency oscillation is proposed to determine whether the system is in low frequency oscillation which is judged by whether the interval of the negative current component of the inverter input current is more than 1 / fc ( fc is the carrier wave frequency of the inverter ) or not

    首先引入開關函數概念，建立了正弦脈寬調制（ spwm ）逆變器供電異步電動機，考慮主磁路飽和時的變頻調速系統整體數學模型，模擬系統的低頻振蕩；其次從逆變器-異步電動機系統能量轉換角度出發，提出通過檢測逆變器輸入電流中負電流的間隔時間是否大於1 / f _ c （ f _ c為逆變器載波頻率）來判定系統是否出現低頻振蕩；最後的實驗結果驗證了系統低頻振蕩建模和判據的實用性和正確性。
  4. Copy that. switching to millimeter wave

    收到切換到超短波
  5. Due to the complexity of the structure and control of cycloconverter - type three - phase hf link inverter for soft - switching based on phase - shift - controlled full - bridge mode, a simple and optimized vvvf control strategy is proposed. this control strategy includes : produced pwm by space voltage vector ( svm ) and equivalent carrier frequency fe = 1 / te are introduced into the pdm control of the cycloconverter ; softened equivalent pwm wave is generated at the notches of hf voltage pulses ; the harmonious control between regulating pulse width by phase - shifted angle and regulating voltage of equivalent pwm is to minimize the harmonics content of output voltage of the inverter

    西安理工大學博士學位論文針對這種前級移相全橋軟開關周波變流型三相高頻鏈逆變器結構和控制的復雜性，提出了一種實現簡單而整體優化的vvvf控制策略:將空間電壓矢量產生p姍的方法svm和等效載波頻率fe = 1 / te引入到周波變流器的pdm控制;按高頻電壓脈沖前後沿軟化等效p翎波;用移相調節高頻脈沖寬度和等效p姍調壓協調控制逆變器輸出電壓，在滿足輸出電壓條件下使諧波最小。
  6. This dissertation only considers the signal ’ s distortion by interconnect, such as delay, reflection, discontinuity of microstrip, crosstalk and simultaneous switching noise, and so on. nowadays, there are some simulation software in pcb level, but they are lack of the well ability of modeling. in order to simulate the interconnect accurately, we have to make use of three - dimension full wave analysis method, whose disadvantage is low speed in computing, but is competent for developing rules in high - speed designs

    目前也有一些針對這些噪聲的高速pcb板級模擬軟體，但它們都缺乏詳盡的建模能力，特別是當頻率逐漸提高和電路板日益復雜后，更是顯得無能為力，要精確地對互連結構進行分析，三維全波模擬器似乎不可缺少，其缺點就是速度慢，對整板模擬很難實現，但非常適用於規則開發，而這正好是本文除了建模與模擬方法研究外另一個重點。
  7. Computer simulation to switching characteristics of nonlinear wave - guide couplers

    非線性波導耦合器開關特性的計算機模擬
  8. According to our theoretic analysis and the realistic fabricating condition, the boa device with double - heterostructure gaas / gaalas has been proposed to obtain 3db bandwidth greater than 2. 5 ghz, half - wave voltage about 5v, extinction - ration less than - 40db, transmission loss of tm mode greater than 45db and transmission of te mode less than 0. 15db. to obtain higher switching speed, we proposed that traveling - wave electrode is applied to boa device

    我們選擇在sigaas襯底上生長重摻雜層，通過控制其厚度來設計速度匹配的boa光開關行波電極，實現boa光開關的高速和高帶寬，本文結合boa型光開關的特點提出一種行波電極型boa光開關結構，其理論3db調制帶寬大於20ghz 。
  9. A new full - wave measurement circuit structure is put forward that would increase distribution automation system reliability and veracity. the distributed protection and monitoring unit in this paper can instead of general instruments of low voltage distribution system. it not only combines ampere meter, voltage meter, active power meter, reactive power meter and power meter, frequency meter into a meter, but also increases monitoring position switch, control bus switching alternately and monitoring energy

    本文研製的保護和測控單元，可替代低壓配電系統中所使用的常規儀表，將原來迴路需要的電流表、電壓表、有功功率表、無功功率表和功率因數表、頻率表簡化為一塊表，並增加了位置開關量檢測，控制母線投切和電度監測功能，從而極大的簡化了低壓配電二次儀表設計、安裝調試，提高了運行、維護和管理水平。
  10. According to the mechanism characteristics of the ac motor, with zero - voltage switching technology, the pdm converter mathematical models both the pwm and rectangular wave control mode are given in this paper. and the voltage and current harmonic analysis and the simulation waveforms of the output voltage, current and power are also described respectively

    根據交流電機在恆轉矩區和恆功率區的特性，結合零電壓開關技術，分別給出相應的脈寬調制控制（ pwm ）方式和方波控制方式下的高頻交流脈沖密度調制變頻器的數學模型，電壓和電流的諧波分析以及輸出電壓、電流和功率的模擬波形。
  11. Consequently, an integrate switch mode power supply with high efficiency and good reliability can be realized by the controller with very few external parts. the fundamental principle of monolithic voltage - mode switching regulator is firstly introduced in this thesis, which is followed by a comparison between voltage - mode and current - mode converters where the pros and cons of both converters are discussed in detail ; next, the global system architecture is proposed upon the design requirements and sub - block circuits are also introduced that focuses on several essential sub - blocks such as amp, wave, pwm control, psc, osc and vref. finally, all sub - circuits and the whole chip circuit are simulated by hspice whose results indicate that the circuit function and performance have perfectly satisfied the design requirements

    在論文中，首先闡述了電壓控制模式pwm開關電源的基本原理，對比了電流控制模式和電壓控制模式，分析了各自的優缺點;隨后根據設計要求進行了電路的總體設計，完成了各個子電路的原理分析，電路設計和模擬驗證，重點闡述了誤差放大電路、三角波發生電路、 pwm控制電路、節能控制電路、振蕩電路和基準源電路的分析、設計和驗證過程;最後，利用eda軟體hspice對整體電路進行了功能模擬驗證，模擬結果表明，本文完成了設計工作，達到設計要求。
  12. At first we analyzed the optical network joins the partial wave - length variable pitch point to the network performance improvement and on how reasonable placed in wdm optical network switching nodes in order to achieve better network performance to improve the effectiveness of the study

    本文首先分析了光網路加入部分波長可變節點對網路性能的改善，並對如何在wdm光網路中合理放置轉換節點，以達到較好改善網路性能的效果進行了研究。
  13. Laser diode pumped solid - state laser ( dpssl ) is an important branch in laser field. continuous wave and pulse operation, q - switching and mode - locking operation have been achieved for dpssl which have a lot of uses in the field of medicine, process and so on

    Ld泵浦的全固態激光器（ laserdiodepumpedsolid - statelaser或dpssl ）是激光技術領域的一個重要分支，與傳統激光器相比在重量、體積、電?光轉換效率、使用壽命和穩定性方面更具優越性。
  14. The volume of the output filter can be reduced greatly used in cascade inverter with carrier - phase - shifted spwm technology which has a high equivalent switching frequency and a good output sine wave. it is the base of the high power density of asi

    載波移相正弦脈寬調制技術有獨特的消諧波優勢，其等效開關頻率高，輸出波形正弦度好，可以大幅減小濾波器體積，為實現系統的高功率密度奠定基礎。
  15. This paper proposes a two - armed push - pull inverter, including its topologies, power distributions in every switching devices and modulation schemes. the major parameters such as thd and df of this vsi are analyzed. comparison study shows that the quality of two - armed push - pull vsi is better than those of square - wave vsi. and the switching loss is lower than that of pwm scheme at same time, especially used in wide frequency range. detailed calculating formulae and experimental results are presented

    該文介紹了一種雙臂推挽式逆變器，包括其電路拓撲、每個開關器件的功率分佈和調制策略.分析了這種電壓源逆變器的主要參數，如總諧波失真度（ thd ）和失真指數（ df ） .比較研究表明，這種逆變器的質量明顯優于方波逆變器，同時開關損耗明顯低於pwm調制方式，特別適用於寬頻范圍.介紹了計算公式和實驗結果
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