dc-dc ac-dc 中文意思是什麼

dc-dc ac-dc 解釋
電源模塊
  • 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...
  • ac : ＝1 air controlman 美海軍航空兵的空中交通管制員。2 alternating current 【電學】交變電流，交流電。...
  1. Input voltage : 400v dc ac peak at 1khz

    最大輸入電壓： 400v直流加交流峰值在1khz
  2. According to the study of frequency - conversion technology, it is available to convert the speed of asynchronism motor, adopting ac - dc - ac transducer, realizing to convert the speed

    通過對變頻調速技術的研究，利用變頻技術對異步電動機進行調速是可行的。
  3. Design of a controllable ac - dc coupled signal source

    可控耦合交直流信號源設計
  4. Sliding - mode current control of three - phase ac dc converter

    變換器的滑模電流控制
  5. A circuit topology of the inverter with duty cycle extended active clamp forward style high frequency pulse dc link is adopted by each independent inverter. each inverter is cascaded by a circuit with duty cycle extended active clamp forward style high frequency pulse dc link and a dc / ac inverting bridge. the control strategy of voltage mode pwm forwardback is adopted by the former, and the control strategy of three - state discrete pulse modulation ( dpm ) hystersis current is adopted by the later

    每個獨立的航空靜止變流器採用占空比擴展有源箝位正激式高頻脈沖直流環節電路拓撲，由占空比擴展有源箝位正激式高頻脈沖直流環節電路與dc ac逆變橋級聯而成，前級採用電壓型pwm前饋控制技術，后級採用三態dpm電流滯環控制技術。
  6. Development of 3 kva dc ac soft - switching inverter

    交軟開關逆變器研製
  7. Traveling cranes, drying furnaces, transformer wiring facilities, transformer automatic inspection machines, pressure meters, insulation resistance meters, ac dc stabilized power sources, memory high coder brightness meters, light meters, film thickness meters, noise meters, hand thermometers

    起重機，乾燥爐，變壓器卷線設備，變壓器自動檢查機，耐壓計，絕緣電阻計，交流直流穩定性電源，內存快速編碼器亮度計，光度計，膜厚計，噪音計，手指尖溫度計
  8. In the hardware design, the paper completes modules ’ design like outside memory, patulous a / d, patulous d / a, rs232 communication, ecan communication, led control, keyboard control, distant control, emulation, reset, logic voltage switch, dsp supply power regulate and ac - dc power circuit, as well as room layout design like anterior panel, back panel etc. and dsp transfers data with peripheral equipments except outside memory using serial ports. besides, the whole circuit is configured in interrupt response. thus, it can meet system demand as well as take full advantage of tms320f2812 ’ s hardware resource. in the software design, the paper finishs programs like the interface programms intercommunicates with people, the distant control program, ad and da modules ’ control program, in addition, the paper select the velocity and acceleration state - feedback algorithm and is written in the program. the software design uses dsp integrate exploiting environment named ccs2. 2 of ti inc. as software instrument, and programs with the combination of c language and assembly language. moreover, in order to maintenance or modify the software expediently and shorten software ’ s exploitation time, the design adopt software modularization technique. finally, some air cylinder experiments are carried out to proved that the pneumatic controller is very practical

    在硬體設計中，本文完成了片外存儲器擴展、 a / d擴展、 d / a擴展、 rs232通信介面、 ecan通信總線介面、液晶顯示控制、鍵盤控制、遠程控制、模擬、復位、邏輯電平轉換、 dsp工作電源校正電路和ac - dc電源等模塊設計以及控制器前面板、後面板等的空間布局設計。其中dsp與除外部存儲器的外圍設備之間的數據傳送全部採用串口通信，同時系統電路配置成中斷響應方式，這樣既滿足了系統要求，又充分利用了tms320f2812的硬體資源。在軟體設計中，本文完成了人機界面功能模塊、遠程控制模塊、 ad擴展模塊、 da擴展模塊、速度和加速度狀態反饋的控制演算法的程序設計。
  9. Stepper motors are like a brushless dc or ac motor

    步進電機就像沒有電刷的直流或交流電機。
  10. From the viewpoint of electrical damping, this dissertation focus on the damping analysis of subsynchronous oscillation for different systems, such as hvdc system, hybrid ac / dc system and multiple - converter hvdc system

    目前，直流輸電技術已經在我國得到了廣泛的應用，並且在今後的幾十年中，直流輸電在我國還將有更為廣闊的應用前景。
  11. We developed the power system of electric drill based on dc - ac. the system use the technique of spwm frequency cowersation control. it changed th d. c provided by trolly wire of d. c motor into stable a. c adopted igbt and driving circuit adopted high speed module of exb840

    針對當前我國煤礦電鉆電源的使用現狀，提出研製dc - ac變換的電鉆電源系統，該電源系統直接利用spwm變頻控制技術，將井下直流電機車的架空線所提供的直流電轉變成頻率是50hz的1 . 27v的穩定交流電。
  12. The design of voltage amplifier for dc ac standard supply

    交直流標準源電壓放大器的研製
  13. By comparing dc, ac and step - motors and analyzing the driving characteristics of the warp beam, a conclusion was drawn that a higher performance to price ratio could be got when a step - motor was selected for the warp beam

    通過對直流電機、交流電機和步進電機的比較，結合織機的織軸驅動特點，得出選用步進電機有較高性價比的結論。
  14. The explanation of field theory takes two independent equations in integral form derived from maxwell equations as basic law of circuit theory. beginning with two independent equations, ftn analyzed the linear dc and ac networks, nonlinear networks and many kinds of circuit analyzing methods and so on

    場論說的電路理論是以從麥克斯韋方程組導出的積分形式的兩組獨立方程組為基本定律，從此基本定律出發，推理演繹電路理論的基本內容，分析了線性直流和交流網路、非線性網路以及各種電路分析方法等。
  15. With the development of power electronics technology and devices in recent years, instead of using the industrial frequency transformer to boost voltage, dc / dc high frequency converter achieves the function. the system has higher power density and conversion efficiency, and the size, weight, ac noise of which has been greatly reduced

    近年來，隨著電力電子技術與器件的迅速發展，使用dc dc高頻變換技術代替工頻升壓，系統具有較高的功率密度與轉換效率，裝置體積、重量與交流噪聲大大減小。
  16. The thesis includes two parties : research on 2kw multi - function ac excitation power and study on high voltage high power ( hh ) dc / dc full - bridge converter

    論文包括兩個部分： 2kw多功能交流勵磁電源研製和高壓大功率dc dc全橋變換器研究。
  17. Her self titled debut album was released in 1993 and had only one song that she wrote : " god ain t gonna getcha for that ". the record wasn t a big success, but one of the video changed her life again. robert john " mutt " lange, a famous musical producer who worked with bryan adams, def leppard, foreigner, ac dc and many more, saw the clip, and liked what he saw and heard

    且說羅伯特喬赫恩在認識shania就已是一位十分成功的音樂製作人了，事業的成功並不能掩飾生活上孤獨，一天羅伯特喬赫恩在家中百無聊賴的打開電視，很偶然的看到了shania的mtv ，羅伯特喬赫恩馬上被這個擁有迷人嗓音一頭柔美的紅發和漂亮面龐的的姑娘迷住了。
  18. Guide for planning dc links terminating at ac locations having low short - circuit capacities, part i : ac dc interaction phenomena, part ii : planning guide

    端接在低短路容量交流系統的直流鏈路的設計指南.第1部分:交流直流互相作用現象.第2部分:計劃指南
  19. In the paper, on the basis of research of static state and transient state in the scr and series connection valve circuit, the high voltage scr changing current valve device has been developed for ac - dc - ac high voltage commutatorless motor. the series connection valve circuit has been designed and simulated. the hardware design and software programming of trigger pulse system and monitoring system in the photo - electronic - photo fashion has been completed

    無換向器電動機在火電廠等工礦企業的電機調速節能領域中有十分廣闊的應用前景，本文在對晶閘管元件和串聯閥電路的靜態特性和動態特性研究的基礎上，研製了用於交直交電流型高壓無換向器電動機的高壓晶閘管換流閥裝置，進行了串聯閥電路的設計和模擬，完成了電光電方式的觸發脈沖系統和監測系統硬體設計及軟體編程，並進行了裝置的實驗調試。
  20. The principle of operation, the selection of snubber circuit, the design of the coupling inductor and the relationship between the dc / dc and dc / ac converters are illustrated and verified on a 1kw experimental circuit. a two - stage dc / dc converter consists of a boost and ppfc is presented in this paper through further research

    文章詳細分析了電路工作過程，給出了緩沖電路的選取原則及耦合電感的設計，討論了該ppfc與后級dc / ac逆變器連接工作時的相互影響，並通過模擬分析和一臺1000w實驗樣機進行了原理驗證。
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