過沖電流 的英文怎麼說

中文拼音 [guòchōngdiànliú]
過沖電流 英文
overriding current
  • 過 : 過Ⅰ動詞[口語] （超越） go beyond the limit; undue; excessiveⅡ名詞（姓氏） a surname
  • 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...
  • 流 : Ⅰ動1 （液體移動; 流動） flow 2 （移動不定） drift; move; wander 3 （流傳; 傳播） spread 4 （向壞...
  • 電流 : current; galvanic current; electric current; electricity; current flow電流保護裝置 current protec...
  1. For electrodeposition by dc methods, the metals deposite uninterrupted and the particles were also embeded uninterrupted into the coatings ; for electrodeposition by pc method, the particles with biggish volume were desorbed from the coatings and returned to the electrolyte again owing to the presence of pulse interval ; for electrodeposition by prc method, the particles carried positive charges are much more easy to desorb from the coatings owing to the effecf of reverse pulse current combined with pulse interval, in addition, the reverse pulse current also could dissovle the metals, further accelerates the desorption of particles, thus the particles size embeded in the coatings by prc method is the least

    直流電沉積時，基質金屬的沉積連續進行，粒子在電極表面不間斷嵌入鍍層;單脈沖電沉積由於脈沖間歇的存在使得具有較大體積的粒子會脫附，重新回到溶液中;採用周期換向脈沖時，反向脈沖電流使表面荷正電的較大的粒子更易從電極表面脫附，同時，反向脈沖電流對基質金屬的溶解作用，也會促進粒子的脫附，因此鍍層中復合粒子尺寸最小。隨著鍍層中粒子復合量的增加，三種鍍層的晶粒都明顯細化，說明al _ 2o _ 3的存在阻止了晶粒的長大，提高了電沉積過程中晶核的形成速率。
  2. This paper presents a method that chopping wave is done by switch devices which consist of three - level resistance regulating module and intelligence power module ipm, and which realizes constant - current discharge of storage battery. to achieve the intelligence control of the drive protection and the discharge process of ipm, the paper designs circuit formed by igbt threshold drive pulse pwm signals. ipm fault - blocking protection circuit and microcomputer 80c196. the devices can accurately control the 0 ~ 150a discharge current and the discharge time of the storage battery and calculate the releasing power

    實現蓄電池恆流放電過程智能控制是蓄電池放電裝置發展的必然趨，本文提出了一種通過三極電阻調節模塊和由智能功率模塊ipm為開關器件進行斬波從而實現蓄電池恆流放電的方法。為達到對ipm的驅動保護和放電過程的智能控制，文中設計了igbt門極驅動脈沖pwm信號形成電路和ipm故障封鎖保護電路及由單片機80c196為核心的微機控制器。本裝置能夠對蓄電池進行0 150a放電電流及放電時間的精確控制及釋放容量的計算。
  3. But its accuracy of detecting is low in application. in this paper we try to find a method based on artificial neural network to improve the accuracy of detecting faulty insulators

    本文力圖通過大量的實驗室和現場數據的分析，發展一種基於人工神經網路的不良絕緣子診斷方法，提高脈沖電流法用於檢測不良絕緣子的準確性。
  4. The impulse heavy current flows through sheet metal and explodes it, which can produce nanometer - metal granules. and the granules are sprayed over metal workpiece by accelerated power of electric field. the characteristics of rigidity and abrasion of the metal workpiece are greatly improved by this way

    讓沖擊大電流通過金屬片，使其爆炸，產生納米金屬顆粒，利用電場的加速作用，噴塗在金屬工件的表面，大大提高金屬工件的硬度和耐磨性能。
  5. Isolated boost converter inrush current occur during flyback work

    起動電流過沖發生在flyback工作階段。
  6. Liberation of hydrogen gas would be increased rapidly and sic particles on the surface might be dispersed if the current density exceed the upper limit. furthermore, nickelous hydroxide would be deposited because the ph of plating solution nearby the surface rapidly increased. all of above might result in coating deterioration

    若電流密度過大，超過所允許的上限值，會析出大量的氫氣，可能沖散表面覆蓋的sic微粒，而且易使磨頭表面鍍液ph值急劇上升而形成氫氧化鎳沉澱，導致鍍層質量惡化。
  7. 2 ignitor : - this is an electronic amplifier that receives electric current from the ballast and boosts voltage to ignite the arc light source in all environments. it initializes plasma discharge within the source by delivering a high - volt pulse to the electrodes

    2 ignitor : -是一個從ballast接收電流並向所有環境中的arc light source釋放電壓的電子放大器，它通過向電極傳遞高脈沖來對等離子放電器進行初始化
  8. Comparing shrinkage under bpec and conventional heating, we can conclude that obvious shrinkage occurred at relative lower temperature and velocity of shrinkage was greater under bpec heating

    比較脈沖大電流和輻射加熱燒結過程中樣品的收縮，結果表明前者在相對較低的溫度即發生明顯的收縮，並且收縮速率大於後者。
  9. And is it the same as under radiation heating ? do the special electric and magnetic fields produced by bpec accelerate atom diffusion ? understanding the above questions fully is a key to expose the mechanism of pecht

    在脈沖大電流加工過程中原子是如何擴散的，與一般的加熱燒結、焊接是否一樣，脈沖大電流形成的特殊電場及磁場是否對原子的擴散有大的推動作用，弄清這些問題成為進一步揭示脈沖大電流熱加工機理的關鍵。
  10. In this paper, three unique models were designed to research atom diffusion at interface, contacting line and joining point under bpec heating and compare with it under radiation heating in order to find out if bpec speed atom diffusion. the first model was aimed to research atom diffusion at interface under bpec heating. experiment condition of bpec diffusion welding sheet cu and ni : direct diffusion welding, at a pressure of l0mpa, welded at 750 ~ 900, with heat rate of 200 ~ 400 / min for 10mm, on / off of 6 / l ~ 48 / 8, with die or not, vacuum of 6pa

    本文設計出三種樣品預構件，研究脈沖大電流加熱條件下片狀材料、線狀材料和球形顆粒之間的原子擴散過程，弄清脈沖大電流加熱條件下原子擴散與一般燒結和焊接過程中原子擴散的區別，以證實特殊的電場和磁場是否對原子的擴散有推動作用，揭示脈沖大電流加熱條件下原子的擴散過程，探索脈沖大電流熱加工技術快速高效的原因。
  11. 1 m 0. 5, the phase - shifted angle 6 is controlled in term of sine law which makes the magnitude of resonant voltage track a reference sine voltage, and the resonant voltage is rectified, filtered, inverted and then the better sine - voltage output is obtained, theoretical analysis and experimental results show that for the resistive load and inductive load, the switches of leading leg of the phase - shift - controlled circuit are always turned on at zvs, and ones of lagging leg are turned on at zvs ( < 0 ) or turned off at zcs ( ( > 0 ), moreover, all switches in the low - frequency inverter are always turned on and off at zvs, the measured circuit efficiency for rated load reaches up to 88 %

    從功率單向流動角度出發，提出了一種lcc諧振型恆頻移相單相高頻鏈逆變電路拓撲，在調制系數0 . 1 m 0 . 5情況下，控制移相角按正弦規律變化，使諧振電壓脈沖列的幅值追蹤參考正弦電壓信號，經過整流、濾波、低頻逆變，從而獲得正弦度較好的輸出電壓。理論分析和實驗結果證明對于阻性負載或阻感性負載，移相全橋具有超前橋臂零電壓開通，滯后橋臂或者零電壓開通（ _ 0 ）或者零電流關斷（ _ 0 ）的軟開關特性，而低頻逆變器的各個開關均實現零電壓條件下的開通與關斷。
  12. By comparing and analyzing the advantages and disadvantages of three kinds of voltage reference circuits, type of current density ratio compensation 、 weak inversion type and type of poly gate work function, a cascode structure of type of current density ratio compensation is chosen to form the core of voltage reference circuit designed in this paper. applying the negative feedback technology, an output buffer and multiply by - 2 - circuits are designed, which improve the current driving capability

    然後通過比較和分析電流密度比補償型、弱反型工作型和多晶硅柵功函數差型三種帶隙電壓基準源電路結構的優缺點，確定了電流密度比補償型共源共柵結構作為本設計核心電路結構，運用負反饋技術設計了基準輸出緩沖電路、輸出電壓倍乘電路，改善了核心電路的帶負載能力和電流驅動能力。
  13. The processes and characters of synthesis reaction for ni / al and ti / al under the influence of lower pulsating electric current are researched

    研究了在較低的脈沖電流作用下ni al和ti al的合成工藝過程與特點。
  14. We studied the resurf, trench - gate, 3d - resurf ldmos. we designed the power switch ic based on epitaxial simox substrate, satisfying the requirements of the user. this ic can sustain 60 ~ 80v shutdown voltage overshot

    在此基礎上，本文設計了性能滿足用戶要求的，基於esoi襯底結構的功率開關集成電路，該集成電路可承受60 ~ 80v的反向過沖電壓，並具有過流，過壓等保護電路。
  15. The shorter the interval between the two pulses of the current wave, the fewer strikes the varistors can endure. at the same time, the dc ljima changes fast - slowly - fast alone with the experiment continuing. microstructual disorder, such as variations in the height of the electrostatic potential at grain boundaries and electrode protrusions into the zinc oxide varistors, causes substantial temperature rise in a microscopic region around the defect and is the source for failure

    雷電的多重閃擊對雷電過電壓保護器件的影響更加嚴重，本文首次採用不同間歇時間雙脈沖電流沖擊對氧化鋅電阻進行了多次試驗，試驗表明：氧化鋅電阻在雙脈沖電流沖擊下更容易出現老化破壞現象，間歇時間越短，電阻能耐受的沖擊次數越少；此外，直流u _ （ 1ma ）值隨沖擊次數的增加具有快一慢一快的下降過程。
  16. At last, an experiential power supply was made, and a series of experiments is done. a lot of high - frequency pulse current was superposed on dcen current, modulated the welding current waveform we required and optimized the energy distribution, which satisfied the basic requirement of cathode cleaning

    最後製作了一臺實驗電源，並進行了一系列的電弧實驗，通過在變極性電源電流dcen基礎上疊加一系列脈沖電流，調制出所需電流波形，實現輸出能量的最優分配，在滿足陰極清理的前提下，最大限度地提高焊接效率。
  17. Based on the dc diffusion model, we build a duplex diffusion layer model which is composed of inner pulse diffusion layer and outer stable diffusion layer. in inner pulse diffusion layer, the concentration of ions fluctuates with frequency of pulse current ; in outer stable diffusion layer, the transport speed of ions is almost stable all the time, the main purpose is to transport the ions from the mass to the pulse diffusion layer

    在直流電沉積的擴散理論基礎上，建立了脈沖電沉積的雙擴散層模型，靠近電極為脈沖擴散層，擴散層內金屬離子的濃度隨脈沖電流的頻率而波動;脈沖擴散層外麵包圍著一層穩態擴散層，其中離子的擴散速度在整個過程中基本是穩定的，作用是將主體溶液中的離子不斷向脈沖擴散層中補充。
  18. It uses the encouragement of step wave or other impulse current field source to produce the transition process field in earth. in the moment of shutting the power it produce the volute alternating electromagnetic field. from the abnormity of measuring the attenuation character of the second induction electromagnetic field, which produced by underground medium with time change, the conductive capacity and the position of the underground non - homogeneous substance can be analyzed

    瞬變電磁法（ transientelectromagneticmethod ）是一種時間域的電磁勘探方法，利用階躍波或其它脈沖電流場源激勵，在大地產生過渡過程場，斷電瞬間在大地中形成渦旋交變電磁場，測量這種由地下介質產生的二次感應電磁場隨時間變化的衰減特性，從測量得到的異常分析出地下不均勻體的導電性能和位置，從而達到解決地質問題的目的。
  19. Effects of current passing through the human body. part 2 : special aspects. chapter 4 : effects of alternating current with frequencies above 100 hz. chapter 5 : effects of special waveforms of current. chapter 6 : effects of unidirectional single impulse currents of short duration

    通過人體的電流的效應.第2部分:特殊信號形式.第4章:頻率在100hz以上的交流電的效應.第5章:特殊波形電流的效應.第6章:短時間單向脈沖電流效應
  20. Pulse electric current sintering is an advanced technology for materials synthesis and one of effective methods for preparation nano - structure ceramic. but the sintering mechanism is different with traditional sintering method. the sintering phenomena of oxide nano - powders have been investigated in this paper

    放電等離子體燒結技術（ sps ）是材料制備新技術之一，也是制備納米相陶瓷的有效方法之一，但燒結金屬氧化物納米粉末過程中的緻密化機理與傳統理論有一定的區別，本文對脈沖電流燒結金屬氧化物納米粉末進行了系統研究。
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