電過應力 的英文怎麼說

中文拼音 [diànguòyīnglì]
電過應力 英文
electrical over-stress
  • 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...
  • 過 : 過Ⅰ動詞[口語] （超越） go beyond the limit; undue; excessiveⅡ名詞（姓氏） a surname
  • 應 : 應動詞1 （回答） answer; respond to; echo 2 （滿足要求） comply with; grant 3 （順應; 適應） suit...
  • 力 : Ⅰ名1 （力量; 能力） power; strength; ability; capacity 2 [物理學] （改變物體運動狀態的作用） forc...
  1. For the 30. 2mm shaft, there are still larger over measure to load. the strength is increased by optimization. for ? 17. 4mm shaft, the strength is increased by enlarge the inner dimension of the spline ; for 30. 2mm shaft, the strength is increased by adjust the structure at the boundary between the key groove and the ring groove, the highest stress of the shaft is at bottom and terminal of the spline after optimization

    其中對17 . 4mm泵軸的優化，通過增大花鍵內徑，提高了花鍵齒底的強度，降低了應力集中點附近的應力；對30 . 2mm電機軸的優化，通過在軸承鍵的環槽端增加倒角，有效降低了該位置的應力集中，使軸的最大應力點從軸承鍵與環槽的交界處轉變到花鍵根部與收尾的交界處，提高了電機軸整體結構強度的合理性。
  2. Based on the mesne layer theory, the centralized stress cantilever was designed, and the infection factors was analysed in detail. in the designing of controditional circuits, comparing with several troditional methods and the merits was integrated, a novel circuits with fewer components and higher performance was designed, and by using the micro assembly techniques, the circuits was minisized

    文中以材料力學的中性層理論為理論依據，設計了結構獨特的應力集中結構懸臂梁，並對各影響因素進行了詳細分析。在調理電路的設計中，通過對幾種傳統方案的比較，綜合了它們的優點，設計了一種元件少、性能佳的新型電路，並採用微組裝技術，實現調理電路微型化。
  3. Being a sort of new principle micromotor in the fronitier of science. the ultrosonic motor ( usm ) is developed at recently twenty years. utilizing the stator surface particle elliptical motion excited by piezoceeramics, the usm is drived by friction force between the stator and rotor. compared with the conventional electromagnetic motor, the ultrasonic motor has the following features : high speed, high holding torque when power is off and so on. because of it ' s characteristics, the ultrasonic motor has obtained some widespread application in robots, precise instrument, house electronical appliance, sapceecraft automobile and micromechanism

    超聲波電機（ ultrasonicmotor ）是近二十年來發展起來的一種新原理電機，其原理不同於傳統的電磁型電機，它是利用壓電陶瓷的逆壓電效應使定子的表面質點產生橢圓運動，通過定子和轉子之間的摩擦力驅動轉子運動。這種新型的電機與傳統電磁電機相比，具有響應快、不受電磁干擾、結構緊湊、低速、大扭矩、斷電自鎖等優點，因而在微型機械、機器人、精密儀器、家用電器、航天器、汽車等方面顯示出廣泛的應用前景。
  4. Tga. insulating and sheathing materials of electric and optical cables - common test methods - part 4 - 1 : methods specific to polyethylene and polypropylene compounds - resistance to environmental stress cracking - measurement of the melt flow index - carbon black and or mineral filler content measurement in polyethylene by direct combustion - measurement of carbon black content by termogravimetric analysis - assessment of carbon black dispersion in polyethylene using a microscope

    電纜和光纜的絕緣和護套材料.通用試驗方法.第4 - 1部分:聚乙烯和聚丙烯化合物專用方法.抗環境應力致裂.熔化流動指數測量.通過直接燃燒測量聚乙烯中炭黑和或礦物填料含量.通過熱重分析法
  5. Abstract : by means of metallographical examination and sem, the microstructure characteristics, macro - and microfractographs of the brittle broken wheel hull bolt of bj212 automobile have been studied. the results show that the thin - headed screw, with excessively deep carbonitriding layer and hardening layer, has less resistance to brittle fracture in the thin area of its head. at the root of the head connecting the stem, a tensile stress may emerge owing to the non - even quenching stress. those are the two reasons for low torque fracture of bolt

    文摘:藉助金相、掃描電鏡等手段對低扭矩脆斷的bj212汽車輪殼螺栓的金相組織特徵，宏觀和微觀斷口形貌等進行了研究，結果表明：這種頭部薄的螺栓，滲層和淬透層過深，使頭部薄區脆斷抗力降低，在頭部與桿的根部，由於淬火應力不均勻導致根部產生拉應力，均是導致螺栓低扭矩斷裂的原因。
  6. The sort, material composite, structure properties and conduction mechanisms of eca ( electrical conductive adhesive ) were discussed in this paper. then three types of ega specimens were designed and made, on which temperature cycles test from - 55 ? to + 125 ? and thermal aging at + 125 ? were carried out. changes of the adhesive strength, eca ' s bulk resistance and contact resistance under the environment stress were summarized and a detailed evaluation on these specimens was given

    本文在全面闡述導電膠的分類組成、物理結構、導電機理的基礎上，設計並製作了三批導電膠樣品，通過對樣品進行長時間的- 55 ? ? + 125溫度循環和125高溫存儲試驗，總結了導電膠粘接強度、體電阻和接觸電阻在環境應力下的變化規律，對三類樣品的長期可靠性做出了全面的評價，並結合導電膠電阻率和「穿流閾值」的計算機模擬，給出了提高導電膠可靠性和電導率的建議，介紹了國內外在高電導率高可靠性導電膠研製方面的一些最新進展。
  7. Traveling wave revolving ultrasonic motor is the direct driver motor that transforms the electric energy to mechanic energy applying the converse piezoelectric effect of piezoelectric and friction driver

    行波型超聲波電動機是一種應用壓電陶瓷的逆壓電效應，通過摩擦力驅動，把電能轉換為機械能輸出的直接驅動電機。
  8. Relating closely to the main problem of the high sidewall and wide span underground cavities excavation stability of xiluodu hydroelectric project, the evolution characters of geo - stress field in deep - cutting gorge and the whole features of the stress field, strain field and plastic failure zone around the underground chambers after excavation are studied systematically in the dissertation, based on a great deal of data gathered in field investigation and taking the flac3d v2. 0 software as basic computation tools. meanwhile, in the course of research, the new methods of dynamic numerical simulation are summarized and applied. furthermore, the effects of rock mass qualities, initial geo - stress field and excavation procedure on surrounding rock mass stability are discussed

    本文緊密結合溪洛渡水電工程大跨度、高邊墻復雜地下廠房洞室群，施工開挖過程中和開挖后圍巖穩定性研究這一重大課題，在詳盡的野外地質調查工作和對大量基礎地質資料的整理與分析基礎上，以目前國際工程地質界公認的最新通用軟體flac ~ （ 3d ） 2 . 0版作為基本計算工具，從整個壩區地應力場的研究開始，通過動態數值模擬分析這一新的模擬思路，系統地研究了深切峽谷區地應力場多階段的特徵和演變規律，進而對左、右岸地下廠房洞室群開挖全過程中圍巖應力場、變形場和塑性破壞區的變化特徵，進行了全過程動態數值模擬研究，並詳細討論了圍巖質量、初始地應力場、施工開挖順序對大型地下洞室群圍巖穩定性的影響。
  9. According to the problem that sampling position has certain influence on precision of the gm ( 1, 1 ) model, in this paper, we try to find out the best sampling position to solve maximum value of stress or strain when using electro motive strain and extr apolating method of gm ( 1, 1 ) model, so as to offer a theoretical foundation for applying electro motive strain more reasonably

    針對采樣位置對模型精度有一定的影響這一問題，本文通過三個具體例子來研究采樣位置對模型精度的影響，探求用應變電測法和gm （ 1 ， 1 ）模型外推法求最大應力值時最佳的采樣位置，從而為更合理的運用應變電測外推法提供一個理論依據。
  10. In the paper we mainly researched space gainp2 / gaas / ge high efficiency tandem cells " making process by home - made low pressure mocvd technology and new solar concentrators. firstly, we presented reseached and development of solar cells in china and foreign countries ; secondly, on the basis of fundamental priciples and theories, we discussed some factors of influcing conversion efficiency of solar cells, and analysed the i - v output feature of two - junction tandem cells ; then the design concept of gainp2 / gaas / ge two - junction tandem cells was discussed, the detailed aspects of gainp2 / gaas / ge tandem cells epitaxy growth by low pressure mocvd was studied, and some questions on epitaxy growth ( such as crystal qualities, interface stress, element interdiffusion, n - and p - type doping et all ) were solved ; after that, the cell fabrication process was described ; finally, we reseached the hot pressing and mould process technology of an arched line - focus fresnel lens made by pmma, designed and fixed new solar concentrators

    本文致力於用自製的低壓mocvd裝置進行cainp _ 2 / gaas / ge空間用高效級聯太陽能電池製作的工藝以及聚光太陽能電池組件的研究。首先，介紹了國內外太陽能電池的研究現狀及應用情況；其次，運用太陽能電池基本原理討論影響電池轉換效率的因素，分析了級聯電池的伏安特性；隨后，討論了cainp _ 2 / gaas / ge雙結級聯電池的結構設計理念，研究了採用低壓mocvd技術生長cainp _ 2 / gaas / ge級聯太陽電池材料的工藝過程，解決了異質材料生長的結晶質量、界面應力、材料互擴散以及材料n 、 p型摻雜等一系列問題；然後總結了級聯電池的后工藝製作；最後，研究了以pmma為材料的菲涅耳線聚焦透鏡的熱壓成型工藝及其模具的加工工藝，設計並安裝完成新型聚光太陽能電池組件。
  11. Furthermore, the supposition of galvanic couple is drawn into the procedure of corrosion fatigue crack growth of aluminum alloys, the relation of couple current vs loading time is determined with electrochemical methods. a formula in the theory is deduced which expresses the stress corrosion crack growth rate of lc4cs aluminum alloy, the results of mathematical modeling preferably correspond with examination

    再將「耦合作用」的猜想，引入鋁合金的腐蝕疲勞裂紋擴展過程中，用電化學的方法測定耦合電流與加載時間的關系，並從理論上導出lc4cs鋁合金應力腐蝕裂紋擴展速率的數學表達式，數學模擬的結果與實驗值具有較好的一致性。
  12. The primary of linear induction motor which drives the metro is installed on the chassis bogie, and because it is quite strict with laying down railway rail to use flat linear induction motor to drive metro, its secondary - - - - reaction board ( called induction board ), which is a kind of compound board of aluminum and steel, is fixed on the rail sleeper between the track. it is the airgap which is a gap between the primary and secondary of lim. the electromagnetic airgap is a very important parameter of lim

    利用有限元法對直線感應電動機二維非線性渦流場進行了數值計算，並在此基礎上，運用電磁場有限元分析的專用軟體ansoftmaxwell2d對單邊型直線感應電動機的瞬態特性進行了模擬分析，得到電機運行過程中的電磁推力、法向力、初級電流、氣隙磁密等曲線，通過改變直線電機參數，分析了電機氣隙對其瞬態性能的影響。
  13. Based on the theories of hybrid / mixed finite element method, the generalized energy functional including stress, mechanical displacement, electric displacement, electric field and electric potential is used, with the electric - potential relations and the constitutive equations of piezoelectric materials constrained, hybrid energy functional including mechanical displacement, electric potential and stress is gained. moreover, splitting in - plane components and transverse components, the mixed energy functional in which mechanical displacement, transverse stresses and electric potential as basic variables is derived. with the use of surface stress parameters of sub - elements, the continuity of transverse stress at interfaces between layers is obtained

    在回顧雜交混合有限元理論的基礎上，從包括位移、應力、應變、電勢、電位移、電場強度六個未知量的廣義壓電材料能量泛函出發，通過約束電場強度?電勢關系、應力與應變及電場強度的關系，得到僅包括位移、電勢、應力三個未知量的雜交變分泛函，利用一般層合板的雜交混合變分原理，分離面內分量和橫向分量，導出以位移、橫向應力、電勢為未知量的壓電層合板的修正變分泛函，作為壓電層合板的雜交元列式的理論基礎。
  14. Using the modified method, 6 kinds of tl topologies of single - switch converter are obtained. the deep research reveals that these tl topologies can have less value of the inductor by using interleaving modulation strategy compared with conventional modulation strategy on the condition that the current ripple of the inductor are the same. some drawbacks such as high voltage stress, difficulty of realizing soft - switching, and magnetic aberration were presented in the conventional push - pull converter

    對基本方法進行改進，提出了適合6種單管直流變換器的三電平拓撲變換方法，成功地得到了其三電平拓撲，開關管的電壓應力降為原來的一半；經過對這些三電平拓撲控制策略的深入研究，詳細論述了交錯開關方式可以最大幅度地減小電感的電流脈動，從而可以在電流脈動要求相同的情況下減小電感的設計值。
  15. Multilevel inverter technology is a pop research in high voltage and high - power converting fields. it can synthesize multilevel output with the distribution of dc voltage and the combination of different switching actions to reduce voltage stress across the switches and bulk of the equipment, and lessen output harmonic distortion and switching loss of the inverter

    多電平逆變器是當前高壓大功率電能變換領域中的研究熱點之一，它通過對直流側的分壓和開關動作的不同組合，實現多電平階梯波輸出電壓，能有效地減小器件承受的電壓應力，縮小裝置體積，減小輸出電壓諧波和開關損耗。
  16. The three - level ( tl ) topology derivation is a method to reduce the voltage stress of each switch in the converter by increasing the number of switches

    直流變換器的三電平拓撲變換是一種通過增加開關管的數量來降低變換器中每隻開關管電壓應力的方法。
  17. The push - pull tl converter can be deduced by using the basic tl topology derivation and by special derivation only used in this topology, in which, the voltage stress of each switches is input voltage

    應用三電平拓撲的基本變換方法，經過對該拓撲結構的特殊變換，得到了推挽三電平直流變換器的拓撲，其開關管的電壓應力為輸入電壓，與傳統推挽直流變換器相比，電壓應力降低了一半。
  18. Two kinds of common used snubber circuits are studied through simulation and experiment. it is pointed out that the rcd snubber has less power loss. increasing the turn ratio of transformer is helpful for the energy, which is stored in the primary side of transformer, to be transferred to the secondary side

    通過實驗和模擬，對比研究了電路中周波變換器的兩種常用的緩沖電路，指出採用rcd緩沖電路損耗更小；提高變壓器匝比有利於減小鐵芯儲能的回饋，提高逆變器變換效率，但它同時也增加了副邊功率管的電壓應力，必須綜合兩方面確定合理的匝比。
  19. Based on comparison between the parallel - parallel and parallel - serial combination ttfc, a novel two - transistor forward converter with parallel - serial / serial combination is proposed. this converter reduces greatly the current overshoot of the primary side switches and the voltage overshoot of the rectifying diodes. moreover, the size and weight of the converter can also be reduced by interleaving technique and increasing frequency

    本文在對並-串型和並-並型雙管正激組合變換器進行了詳細比較研究的基礎上，提出了一種新型並-串串型雙管正激組合變換器，該組合變換器可以大大減小原邊開關管的電流應力和副邊整流電路中二極體的電壓應力；通過交錯控制及提高開關頻率，大大提高了變換器的功率密度。
  20. Abstract : the saturation behavior of stress current is studied. the three types of precursor sites for trap generation are also introduced by fitting method based on first order rate equation. a further investigation by statistics experiments shows that there are definite relationships among time constant of trap generation, the time - to - breakdown, and stress voltage. it also means that the time constant of trap generation can be used to predict oxide lifetime. this method is faster for tddb study compared with usual breakdown experiments

    文摘:基於一階速率方程，討論了恆定電壓應力下應力電流的飽和行為.通過對應力電流的擬合，發現存在三類缺陷產生的前身.更進一步的統計實驗顯示，在缺陷產生時間常數、擊穿時間以及應力電壓之間存在著明確的關系.這意味著缺陷產生時間常數能夠被用於有效預測氧化層的壽命.與常規的氧化層擊穿實驗相比，基於缺陷產生時間常數的預測更快、更有效
分享友人
分享到 Line

分享到臉書