dc operation 中文意思是什麼

dc operation 解釋
直流工作
  • dc : ＝1 direct current 直流電：a DC generator 直流發電機。2 District of Columbia 哥倫比亞特區〈美國首...
  • operation : n 1 動作，行動，活動；業務，工作；作用。2 效果，效力；有效范圍，有效期間。4 【數學】運算；【醫學...
  1. A novel phase - shifted zero - voltage and zero - current switching pwm dc / dc full - bridge converter is presented in this thesis, which is based on the groundwork of summarization of the development of power electronics in recent years and lucubration in theoretical basis of modern high frequency soft switching power convert technique and analysis of operation principle, characteristic of the circuit and inherent drawbacks of the traditional phase - shifted zero - voltage switching pwm dc / dc full - bridge converter

    本文在對近年來電力電子學科的發展高度綜述和對現代高頻軟開關功率變換技術理論基礎深入研究的基礎上，對傳統的移相控制zvspwmdc dc全橋變換器的工作原理、電路特性、存在的缺點進行了分析，在此基礎上提出了一種改進型的移相控制zvzcspwmdc dc全橋變換器。
  2. The operation principleresult of saving power ， mate rial and reliability of ac and dc usual auto - converting saving power instrument are expounded, which the operation - coil of ac contactor given ac and dc voltage is usual, output is even dc, on and off and keeping voltage non - contactor auto - convert

    論述了與交流接觸器操作線圈適配的交直流輸入（操作）電壓通用、恆直流輸出、吸合與保持電壓無觸點自動轉換節電器的工作原理；接觸器配用節電器后的節能節材效果及節電器的可靠性。
  3. Firstly. operation principle of induction heating is introduced and the actuality of the power supply for induction heating is summarized. then, the scheme of structure of the power supply is established : uncontrolled rectifier and buck chopper constitute dc circuit. in this part, operation principle of a kind of soft switching buck chopper is presented mainly and the conclusion that the power semiconductor devices operate in soft switching is also illustrated by analysing the operation principle of all stages ; series resonant inverter is selected as inverter circuit via comparing the advantage and shortcoming of parallel resonant and series resonant. moreover. the work principle of series resonant inverter is analysed and the calculating method of the best dead time is put forward as well

    文中首先介紹了感應加熱電源的工作原理並綜述了國內外的研究現狀。接下來分析並制定了電源主電路的構成方案：在對比幾種功率調節方式的基礎上選擇了不控整流加斬波調壓作為直流部分。在這部分里，重點研究了一種軟開關buck變換器，通過分析各階段的工作原理說明了開關器件如何工作在軟開關狀態；對于逆變器部分，在比較了串、並聯逆變器優缺點的基礎上選擇了串聯諧振逆變器，並詳細分析了串聯逆變器的工作原理，提出了最佳死區的計算方法。
  4. The n3306a electronic load provides fast operation and the accurate programming and read - back needed for high - volume dc power supply test systems

    N3306a電子裝載為大容積直流電源測試系統提供快速的操作和準確編程和讀取需要。
  5. The n330xa series of dc electronic loads provides fast operation and the accurate programming and read - back needed for high - volume dc power supply test systems

    Dc電子裝載n330xa系列為大容積直流電源測試系統提供快速的操作和準確編程和read - back需要。
  6. Design engineers now selecting pmbldc motors over conventional dc or induction motor drives for the following reasons : 1 ) the absence of brushes results in an essentially maintenance free operation and eliminates the undesirable effects of commutation such as sparks, brush - loss, radio - frequency interference, etc. 2 ) the low inertia of the rotor enhances the quality of the mechanical response of the motor, shortening the acceleration and deceleration time. 3 ) utilizing rare - earth permanent magnet materials with high coercive force results in substantially higher efficiency than their counterpart with brushes of the same size. 4 ) because of the absence of commutation segments, the stator construction is simple

    現在的工程師們更為青睞永磁無刷直流電動機是因為以下幾點原因： （ 1 ）去除了電刷的永磁無刷直流電動機徹底地免除了維護而且消除了我們不希望的由於換向帶來的火花、電刷損耗以及無線電干擾等等； （ 2 ）低轉動慣量的轉子提高了電機機械響應的質量，從而縮短了電機加速和減速的時間； （ 3 ）高矯頑力稀土永磁材料的使用使得同樣尺寸的永磁無刷直流電動機比傳統的直流電動機效率高； （ 4 ）由於沒有機械換向部分定子的結構簡單了。
  7. The auto - proof capability of dc 2060 is also a feature of fuji xerox. the reacs and i - tracs technology includes software and sensitive devices that continuously monitor all the aspects of the operation of the system, and adjust picture quality during the process of printing. this feature ensures the even output quality of digital printers

    Dc 2060的自動校色功能也是富士施樂的特色之一， tracs和i - tracs技術負責管理復雜的全感器和軟體，不斷監控系統運行的各個方面，並在列印過程中，即時進行圖像質量的調整，使數碼印刷機輸出品質恆定如一的特性得以淋漓盡致的發揮。
  8. This method can be used in dc and ac electric drive without complex arithmetic operation, and be can get engineering operational accuracy to some extent

    對于直流及交流拖動系統過渡過程的求解無須煩雜的數學運算，並且具有一定的工程計算準確性。
  9. Basically learn dc, alternating current way, lighting circuit, distribution circuit, transformer of odd, three - phase, dynamo job principle reachs operation method, the principle maintenance of electromotor of single - phase, three - phase reachs application, low - pressure electric equipment, electric power procrastinates move, electromotor maintains skill, brilliant brake canal can accuse rectification, electrical engineering appearance, the electron controls a technology, circuit of new light source, engine, principle of distribution ark job and installation technology

    主要學習直流、交流電路，照明電路，配電電路，單、三相變壓器，發電機工作原理及操作方法，單相、三相電動機的原理維修及應用，低壓電器，電力拖動，電動機維修技巧，晶閘管可控整流，電工儀表，電子控制技術，新光源電路，發動機，配電櫃工作原理及安裝技術等。
  10. The speed - independent position function of the rotor was given by analyzing the phase current and phase voltage of the permenent magnet brushless dc motor, using the powerful operation function of dsp

    利用dsp的強大運算功能，通過分析永磁無刷直流電動機的相電壓與相電流給出轉子速度無關位置函數。
  11. The mathematic models of dc servomotor and clutch operation mechanism have been built. and controller has been designed. simulation results indicate that the operation mechanism and controller has good performance

    建立了伺服電機數學模型和基於膜片彈簧的離合器機械執行系統模型，設計了伺服電機驅動離合器執行機構及控制器，模擬結果表明，採用本文設計的離合器執行機構及控制器，響應快，控制精度高，滿足車輛起步的要求。
  12. The operation principle of the aviation static inverter with high frequency pulse dc link is discussed, and the design criterions of the key circuit parameters are gained

    本文論述了高頻脈沖直流環節航空靜止變流器的工作原理，獲得了關鍵電路參數設計準則。
  13. In the light of the actual situation then ( mainly the community reaction and operation of dcs after reduction of the number of appointed dc seats ), we will decide before end 2011 whether to reduce the number of appointed seats to zero in january, 2012, or to 34 in january in 2012 and then to zero in january, 2016. these adjustments form part of the government s overall package for the 200708 electoral arrangements

    此後，我們將在二零一一年底前按當時情況，主要是減少區議員委任議席后，社會的反應和區議會運作的情況，決定是否把餘下的68席委任議席由二零一二年起全數取消，抑或先減去一半至34席，然後在二零一六年取消餘下的34席委任議席。
  14. The government will decide in the light of the prevailing situation, which would mainly be the reaction of the community and the operation of the dcs following the reduction in the appointed seats, before the end of 2011 whether the maximum number of appointed dc seats should be further reduced to zero in january, 2012, or to 34 in january, 2012 and then to zero in january, 2016

    政府將在二零一一年年底前按當時情況，主要是減少區議會委任議席后社會的反應和區議會運作的情況，決定把委任議席的上限由二零一二年一月起進一步減至零，或在二零一二年一月起減至34席，其後在二零一六年一月減至零。
  15. Some important parts for these two vsc - hvdc control systems are designed in detail, especially the structures and parameters of the vsc controllers, as well as the principles for selecting the equivalent inductance of the convertor transformer and the capacitance of the capacitor on the dc side of the vsc. digital simulation using netomac is done to verify the validity of those proposed control strategies. ( 2 ) the operation performance of the vsc - hvdc under some characteristic faulted conditions without any protection measures are studied, and the over - current and over - voltage of the vsc - hvdc during those faults is revealed

    （ 2 ）對vsc - hvdc在沒有保護控制的情況下其交流側、直流側和vsc內部等部位發生常見較嚴重故障時的運行特性進行了模擬研究，總結出這些較嚴重故障可能對vsc - hvdc造成的危害，並針對這些危害提出了幾種切實有效的保護策略，模擬結果證實了應用這些保護策略可確保vsc - hvdc中的一些重要部件能夠在大多數類型的故障時免遭過電壓或過電流的損害。
  16. A driving signal with a dc bias voltage and ac voltage is usually necessary for sensing very small capacitance. the reliable operation conditions of the capacitive sensor for foreign acceleration had been researched with the assumption of the parallel comb plates. but the comb plates are actually not parallel for the reason of the drie process

    前人在研究外界加速度信號對傳感器的作用時，假定驅動信號產生的靜電力作用在平行梳齒電容極板上，但是，在用drie工藝對硅進行刻蝕時會產生側蝕效應，從而得到的梳齒電容有一定的傾斜角度。
  17. Large signal model of gaas mesfet is built and, in the light of advanced pspice circuit simulation programme, the circuit transient and dc operation analyse and speed performances are calculated. and also, the inserted loss and isolation are optimized by microwave circuit software touchstn of eesof company

    同時，建立了gaasmesfet器件大信號模型，用先進的pspice電路模擬程序對所設計的電路進行瞬態分析和直流工作點分析，計算電路的速度性能；用eesof公司的touchstn微波電路設計軟體，進行開關的插入損耗和隔離度的優化設計。
  18. In the design of the rf front - end, the effect of the low voltage power supply must be considered since the low voltage power supply limits the voltage swing of the circuit nodes and may affect the dc operation point, power gain and linearity of the rf front - end

    本論文實現的收發機射頻前端採用了1 . 8v的電源電壓，射頻前端各模塊的設計都考慮到了低電源電壓對直流工作點、增益和線性度的影響。
  19. High quality / lower price 、 auto - counting 、 taring in an entire range 、 reliable and sensitive 、 big table - board weighing 、 optional ac & dc operation

    優越的性價比、自動校準，計數、全量程去皮、稱重快而穩定、操作便捷、大臺面稱重、可配充電電池。
  20. The dq equivalent circuit model of three - phase three - switch boost type power - factor - correction is proposed firstly, the completely dc steady - state analysis and ac small - signal analysis are done and the dc operation points and ac transfer functions are acquired

    3 .首次提出三相三開關boost型功率因數校正的dq等效電路模型，並對其進行了完整的直流穩態和交流小信號分析，得到直流工作點和交流傳遞函數。
分享友人
分享到 Line

分享到臉書