機電振蕩 的英文怎麼說

中文拼音 [jīdiànzhèndàng]
機電振蕩 英文
electromechanical oscillations
  • 機 : machineengine
  • 電 : Ⅰ名詞1 （有電荷存在和電荷變化的現象） electricity 2 （電報） telegram; cable Ⅱ動詞1 （觸電） give...
  • 振 : 動詞1. （搖動; 揮動） shake; flap; wield 2. （奮起） brace up; rise with force and spirit
  • 蕩 : Ⅰ動詞1 （搖動; 擺動） swing; sway; wave 2 （無事走來走去; 閑逛） loaf; wander; roam; loiter; go a...
  • 機電 : electromechanical機電設備 electromechanical equipment; electromechanical device
  1. If the numerical value line resonance frequency plus some shaft connatural frequency of generator is equal to operation frequency, it brings about coupling resonance between generator and system, which maybe results in shaft rupture of synchronous generators

    當線路電氣諧振頻率與同步電機的軸系某一固有振蕩頻率近似互補于電網工頻時，將導致機電系統的耦合振蕩，嚴重的會造成同步發電機大軸的扭斷。
  2. Delay line oscillator is composed of broadband amprifer adjustable attenuator and saw sensor device. after output signal of delay line oscillator is smoothed, it mixes with 109mhz local oscillation signal. its differential frequency signal is smoothed by low - pass filter trimmed by shaping circuit and processed by digital processing circuit

    延遲線振蕩器由寬帶放大器、可調衰減器和聲表面波質量傳感器件構成。延遲線振蕩器輸出信號經濾波后與109mhz的本機晶體振蕩器輸出信號相混頻，通過低通濾波取其差頻，並經整形後由數字信號處理電路處理。
  3. Then the different behaviors between fixed series capacitor and tcsc are compared aiming at ssr, when they are individually applied to typical model of ieee second benchmark on subsynchronous resonance

    繼而以ieeesecondbenchmarkonsubsynchronousresonance典型模型為例，比較了固定電容串補與可控串聯補償在模型系統中針對同步發電機次同步振蕩這一行為所造成的差異表現。
  4. Torsional interaction exists between hvdc converters and turbine - generators, and negative electrical damping provided by hvdc may cause subsynchronous oscillation ( sso ) that can lead to turbine - generator shaft failure and electrical instability at oscillation frequencies lower than the fundamental system frequency

    高壓直流輸電（ high - voltage - direct - current - - - - hvdc ）系統與臨近同步發電機組之間存在著扭振相互作用， hvdc的電氣負阻尼作用有可能引起機組在次同步頻率范圍的扭轉振蕩。
  5. This machine uses reciprocating piston topour, sort caps out with electromagnetic shaking, pricks caps with blade. it not only can automatically finish the bottle - feeding, pouring, arranging caps, sending caps, pricking caps, but also not pout and arrange caps without bottle. it is a perfect equipment of little measure oral liquid pouring and cap - pricking

    本機採用往復式活塞泵進行灌裝，電磁振蕩理蓋，刀片軋蓋。能自動完成進瓶灌裝理蓋送蓋軋蓋工序，且無瓶不灌裝無瓶不理蓋。
  6. Besides, the growth of gasb expitaxy film was monitored by reflection high energy electron diffraction ( rheed ). the rheed images and intesity oscillation are collected by computer system. it showed that the gasb film prepared in 400 was amorphous and it became monocrystalline when the temperature rose to 500. atomic force microscope ( afm ) was applied to analyse the surface morphology of the films which were grown in diffrent growth rates or substrate temperature. the analysis were compared to simulation results. the experiment results indicated it was easy to form clusters when the rate of growth is high or

    此外，本文通過反射式高能電子衍射（ rheed ）監測了gasb外延薄膜的生長，利用rheed強度振蕩的計算機採集系統實現了rheed圖像和rheed強度振蕩的實時監測。實驗發現在400生長的gasb薄膜為非晶態，溫度升高到500薄膜轉變為單晶。利用原子力顯微鏡對不同生長速率和襯底溫度生長的gasb薄膜的表面形貌進行觀察分析，並與模擬結果進行比較。
  7. The damper is mounted on the free end of the rotor. the experiments done show that the oil whip can be good damped by the passive electromagnetic damper

    在理論計算的基礎上還進行了實驗研究，在不停機的條件下，通過被動式電磁阻尼器成功地在線消除了系統的油膜振蕩。
  8. During the circuit design, the author analyzed the basic principle of the direct current motor, pwm control, h - bridge power driver, and two control techniques of h - bridge power drive circuit, designed its general structure, so the feasibility of the design is confirmed. then, reference, oscillator, power dmos gate drive circuit ( charge pump, bootstrap ), and dead time generation circuit are designed and analyzed in the sub - circuits. a current - controlled oscillator is presented in this thesis

    在電路設計中，作者介紹了直流電機的工作原理和數學模型、脈寬調制（ pwm ）控制原理、 h橋電路基本原理和h橋功率驅動電路的兩種控制模式，設計了驅動電路的總體結構，給出了電路的功能模塊，確定了設計的可行性，然後在子電路模塊中，重點分析設計了基準源電路、振蕩器電路、高端功率管柵驅動電路（電荷泵及自舉電路） 、低端功率管柵驅動電路和死區時間產生電路。
  9. The precise clock source is crystal oscillator made of 74hc04 ; the mute circuit can conceal the error and solve the problem of noise ; the antenna switching circuit in the receiver is to select one antenna from two which receives signal better. it can improve the quality of the receiving audio signal, restrain the noise effectively and promote the system performance

    高精度的時鐘源是由74hc04構成的晶體振蕩器;靜音電路將出錯的音頻信號進行差錯掩蓋，很好地解決了噪聲問題;接收機採用兩副天線切換工作，提高了音頻信號接收質量，有效地抑制干擾，提升了系統的性能。
  10. 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。
  11. Through the deep study of f. d. demello dynamic model of electromechanical transition and synchronous generator theory, we proposed a new control strategy of excitation device that can eliminate the negative - damping phenomenon, which is directly against the cause of producing negative - damping represented as low frequency oscillation in the system

    通過深入研究f . d . demello機電暫態的動力學模型以及同步發電機理論，針對系統產生負阻尼即低頻振蕩的原因，我們提出了一種新的可消除負阻尼現象的勵磁控制策略。
  12. On the contrary, because of the effect of positive damping provided by the inverter, the unit near a inveter will have no subsynchronous oscillation risk. based on the same method described above, a damping study is carried out for a hybrid ac / dc system, which include a hvdc link and an ac transmission line in parallel

    研究表明，系統整流站附近的同步發電機組要承受電氣負阻尼作用，因此有可能引起機組低頻扭轉振蕩模式失穩；而hvdc的逆變站向其臨近同步發電機組提供正阻尼，因而機組不存在次同步振蕩危險。
  13. The characteristics of damping shows that the uncompensated parallel ac transmission line can release the coupling between the hvdc and generator and improve the damping of the system, hence the possibility of subsynchronous oscillation decrease. in such a system scheme, the hvdc system dominates the changes of damping due to the small magnitude of the damping provided by ac line. when the ac transmission line is compensated with a fixed series capacitor, the situation will be totally different

    其中，並列運行的無串補交流輸電線路可以緩解hvdc與其臨近機組之間的機電耦合程度，改善hvdc的電氣負阻尼特性，從浙江大學博士學位論文摘要而減輕機組發生次同步振蕩的危險性，此時系統的整體電氣阻尼特性由hvdc的性質決定;但若交流線路中存在串聯補償電容，則系統幅值較大的電氣負阻尼不僅可能使整流站機組發生次同步振蕩，逆變站附近機組同樣存在發生次同步振蕩的可能性，此時系統的整體阻尼特性由串聯補償電容的性質決定。
  14. Company is a high starting point, high - quality, high - quality towards the world, enter into the world advanced level with the industry ranks

    一， sf - ggp全固態高頻焊機主要由scr dc電源部分振蕩輸出部分觸摸屏plc控制部分三部分組成。
  15. One components of the equipment : sf - ggp - 1solid state hf high frequency welder machine is composed by four parts : sor dc power supply vibratory output. touch screen plc control and wind - water exchange water cooling system

    一， sf - ggp全固態高頻焊機主要由scr dc電源部分振蕩輸出部分觸摸屏plc控制部分三部分組成。
  16. Some practical method to lifting the rated capacity of vsc - hvdc is discussed. ( 4 ) the subsynchronous oscillation ( sso ) characteristics of a synchronous machine connected to a static var compensator is studied with the complex torque coefficient method realized by time domain simulation, and some important conclusions are obtained which can guide the design and operation of svcs to avoid sso problem

    （ 4 ）基於時域模擬實現的復轉矩系數法，對與靜止無功補償器svc相聯接的同步發電機組的次同步振蕩（ sso ）特性進行了深入的研究，得出了一些重要結論，可為svc的設計和運行提供避免sso的依據。
  17. Single frequency source is usually used as local oscillator in communication system and radar system, also as a reference clock in digital circuits, so it is a extensive - applied technique

    固定頻率源可以在在通訊系統和雷達系統中作為本機振蕩器，也可以作為數字電路的基準時鐘信號，因此得到了廣泛的應用。
  18. Eurostag is a large simulation analysis software package used in power system developed by the edf and tractebel of belgium. the most prominent point of this software is that it covers the full range of the phenomena, from transient to long - term stability. that is to say that the time of simulation lasts from the electromechanical oscillations to the daily load evolution

    Eurostag是法國電力公司（ edf ）與比利時tractebel共同開發的大型電力系統模擬分析軟體，它最突出的特點就是可以對系統進行全時間范圍內的模擬，具體的說就是模擬時間可以從系統機電振蕩開始直至一天范圍內負荷的變化，這是目前我們國內所使用的其它系統模擬軟體所不具備的。
  19. Space - time wave has a far greater and wider significance than particle wave vibration. no matter what mechanical vibration, electromagnetic surge or vocal wave, they are all manifestation of space - time vibration or a certain wave in special scope, all of which are general phenomena in nature of both macrocosm and microcosm, and can be expressed by stwf

    時空波動比粒子振動或波動有更廣泛深刻的含義，凡有空間有物質存在的地方都存在著時空波動，無論是機械振動電磁振蕩聲音振動等均是時空波動的某種表現形式，或是在某個特定時空范圍的波動，這種自然界的普遍現象在宏觀或微觀世界都可用時空波函數表達出來。
  20. A3. initially, 12 types of commonly used equipment are included in the qpme system. they are : tracked bulldozer ; wheeled bulldozer ; tracked loader ; wheeled loader ; excavator ; generator ; mobile crane ; vibratory roller ; road roller ; asphalt paver ; vibratory compactor ; and power rammer

    答3優質機動設備制度初步會採用12類常見的設備，分別是: 1履帶式推土機; 2輪動式推土機; 3履帶式搬土機; 4輪動式搬土機; 5挖土機; 6發電機; 7流動起重機; 8振蕩式滾壓機; 9道路滾壓機; 10瀝青攤鋪機; 11振動式壓實機及12機動夯土機。
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