有效弧 的英文怎麼說
中文拼音 [yǒuxiàohú]
有效弧
英文
effective arc-
Analyze and compare pid and vague, single neuron etc. control strategy, and combine with single neuron self adaptive gain, self adaptive right value and preventive integral saturation etc. control strategy. have improved single neuron control algorithm, may restrain efficiently to disturb, reduce broken arc and short circuit etc. phenomenon, make systematic control effect and robustness get to strengthen, also have certain application reference value for the design of the dc arc furnace
通過對pid 、模糊、單神經元等控制策略的分析比較，將單神經元增益與權值的自適應調節、抗積分飽和等控制策略相結合，改進了單神經元控制器演算法，可以有效抑制擾動，減少斷弧、短路等現象的發生，使系統的控制效果和魯棒性都得到增強，對電弧爐控制系統的設計也具有一定的應用參考價值。Rapid prototyping technology changed the traditional pattern of product design, which could offer product sample for the designer, reduced design cycle and quicken the schedule of new product design, and it gave the decision - makers visual feeling. ; rp technology provided kinds of molds including resin - boncled mold laminate mold, investment mold and lost foam casting mold and so on for sand casting investment casting and cavityless casting, it could also use direct shell production casting to make pattern dies metal dies die - casting dies injection dies directly, and it could even produce casting products in small scales. the applications of fdm technology in plaster precision casting and the rapid casting technology based on sls technology were introduced, the organic combination between rapid prototyping tecnnology and foundry process, which initiated a new period of rapid manufacturing metal parts, by using advanced new technology alternated traditional foundry industry to make it looked brand - new, thus, the competition of foundry industry would be improved ; rapid prototyping technology offered a rapid economical feasible technical method, common processes of using rapid prototyping technology to produce dies were discussed, in the paper it explored that. the problem of combining rapid prototyping technology with electric arc metal - spraying technology to make metal dies and technics in dies manufacturing of combining rapid prototyping technology with precision casting, rapid tooling based on rapid prototyping, integrated advanced new technology and tradition technology of rapid prototyping manufacture, each superiority were exerted, rapid prototyping technology had been an efficiency measure to rapid update products and develop new product, and to middle -
快速成型技術改變了傳統的產品開發模式，可以為設計者提供產品樣件，縮短設計周期，加快新產品的開發進度，為決策者提供直觀性；快速成型技術迅速提供砂型鑄造、熔模鑄造、實型鑄造用的各種模樣，包括樹脂模、層壓模、熔模和消失模等，還可採用直接制殼鑄造法直接製造熔模鑄造用的壓型、金屬型、壓鑄型、注塑模，甚至直接製造小批量鑄件，介紹了熔積成型技術在石膏型精密鑄造上的應用和基於選擇性激光燒結技術的快速鑄造技術，快速成型技術與鑄造工藝的有機結合，開創了快速製造金屬零件的新階段，對用高新技術改造傳統的鑄造工業，使其面貌煥然一新，增強鑄造行業的競爭能力；快速成型技術為母模的製造提供了一條快速、經濟、可行的技術途徑，討論了利用快速成型技術製造模具的一般工藝方法，探討了將快速成型技術與金屬電弧噴鍍技術結合起來快速製造金屬模具問題，以及快速成型技術與精密鑄造技術相結合的模具製造工藝，基於快速成型製造的快速模具技術，集成了快速成型製造高新技術和傳統技術，發揮各自優勢，已成為產品快速更新換代和新產品開發及中、小批量生產的有效手段之一。The algorithm of image processing is the key. due to anomalous welding seam, the intensive arc light, random breaking of the bubble and gathering of the gas in the welding area, the seam images captured contain a lot of noise. in this case the noise must be removed and the welding seam is positioned accurately
本系統的圖像處理部分採用了ccd攝像頭和視頻捕獲卡，圖像處理的演算法是最關鍵的部分，由於焊縫圖像並不是十分規則，而且在焊接時還會受到強烈弧光、飛濺和工件表面狀況的影響，因此在這種情況下，必須有效的排除干擾把焊縫的中心位置準確找出來。Abstract : the image of arc zone of flux - cored underwater wet welding was developed with underwater ccd camera system and composed filter technology. the discussion is mainly focused on the theory of edge detection. an image edge detection method based on median filter and grads algorithm was developed to detect the arc burning zone and arc bubble zone efficiently, which laid the foundation for further analysis of underwater wet welding arc mechanism and process control
文摘:通過復合濾光技術和水下ccd攝像系統，採集出了藥芯焊絲水下濕法焊接電弧區域圖像，重點論述了邊緣檢測理論，確定了基於中值濾波和梯度運算元的電弧區域圖像邊緣檢測方法，有效地區分了電弧燃燒區域和電弧氣泡區域，從而為水下濕法焊接電弧的機理分析及水下焊接過程式控制制奠定了基礎。Magnetic head is designed by six magnetic poles in symmetrical distribution, the design of excitation loop and excitation angle makes magnetic field act on welding arc region which could control welding arc effectively. the insulation, cooling and hermetization of magnetic head avoid the influence on magnetic field of outside ; miniaturization design of magnetic head could achieve different welding process
磁頭裝置採用六磁極對稱勵磁方式設計，勵磁線圈和勵磁角度的設計使產生的磁場恰好作用於焊接電弧區域以實現對電弧的有效控制;磁頭的絕緣，冷卻，密封設計避免了焊接過程中外界因素對磁場的干擾;磁頭整體的小型化使該裝置可以實現多種形式的焊接工藝。Nc machining requires " interpolation " algorithms that accurately and efficiently generate sequences of reference position, distributed according to a prescribed feedrate function, along the tool paths. this paper present a systematic derivation of the proper taylor series coefficients for variable feedrate interpolators. when the path is ph curves, detailed formulations for instances are presented where the feedrate v is specified as a constant, the function of the time t, the arc length s and the local curvature k
對于nc加工要求插值演算法沿著刀具路徑準確、有效的生成參考點序列（根據預先指定的速率函數進行分佈）的實際工程需要，本文系統地推導了變速率插值運算元的泰勒系數，給出了當路徑為ph曲線，速率v為常數，及時間t 、弧長s 、曲率k的函數時具體的插值運算元。With fortran power station 4. 0, we make galerkin boundary element method program for solving laplace equation on region which boundary is a closed curve or an open arc, and the numerical experiments also prove this method is reliable. last we test the error of galerkin boundary element by numerical experimentation
最後利用fortranpowerstation4 . 0程序語言分別編寫了用galerkin方法求解區域邊界為閉曲線及區域邊界為直線段或開弧段laplace方程的計算機程序，通過幾個算例證明了該方法是有效的、是可行。It is a very high advancement to the development from two - pressure arc - quenching chamber and single - pressure arc - quenching chamber to the self - energy arc - quenching chamber now for arc - quenching theory of sf6 cb make use of the arc blocking effect, namely arc - self - energy, to increase sf6 gas pressure in the arc - quenching chamber and get the efficient blasting effect to extinguish the arc when the arc current is zero
Sf _ 6斷路器從雙壓式、單壓式發展到如今的自能式是斷路器滅弧原理的一個重大飛躍。自能式sf _ 6斷路器利用電弧阻塞效應即利用電弧本身的能量使滅弧室內sf _ 6氣體的壓力升高，在電弧過零時產生有效的氣吹而熄滅電弧。Two methods were compared with the finite element method and experiment. it proved that method based on large deflection was reasonable and effective. it can provide initial parameters for the design of sma actuator
與相關研究中採用的將撓度曲線假設為圓弧的方法進行了對比，通過有限元方法和實驗進行了驗證，結果表明，基於大撓度理論的研究方法更為合理有效，並且這種方法還可以為sma驅動器的設計提供初始參數。The welding position can be detected accurately through processing the image of arc area collected by the vision sensor ccd ( charge coupled device ), by the system of image collection and computer - ware, we can recognize the position of the welding line exactly, count out the warp between moving track of robot and the welding line. so we can control the robot ' s act real - timely, the seam tracking accuracy is enhanced efficiently
重點論述焊縫圖像分割和邊緣提取的理論方法，焊縫圖像由面陣ccd攝像系統攝取，通過圖像採集系統和計算機軟體，對檢測到的弧焊區圖像進行處理來準確地識別焊縫位置，計算機器人的運動軌跡和實際焊縫之間的偏差，據此控制機器人運動進行實時跟蹤，從而有效地提高焊縫跟蹤精度。After the neutral point is grounded through perterson coil, it can decrease the capacitor current through fault point and the over - voltage caused by the grounding fault, which is advantage for the extinguishments of electric arc
中性點經消弧線圈接地后，有效減小了流過故障點的電容電流，減小了弧光接地過電壓，有利於電弧熄滅。After the neutral point is grounded through peterson coil, it can decrease the capacitor current through fault point and the over - voltage caused by the grounding fault, which is advantage for the extinguishments of electric arc
中性點經消弧線圈接地后，有效地減小了流過故障點的電容電流，減小了弧光接地過電壓，有利於電弧熄滅。Second, a numerical method for computing the higher order singular points of the nonlinear problems with single parameter is considered. based on the uniformly extended system and pseudo - arclength continuation, an uniform algorithm is given. numerical examples are computed to show the effectiveness of our algorithm
第二部分我們考慮計算單參數非線性問題中高階奇異點的計算方法，基於確定奇異點的一個普適的擴張系統，結合同倫參數的擬弧長延拓，給出了計算各類高階奇異點的一個統一演算法，通過數值例子說明了演算法的有效性。As an important part, the principle of measuring capacitor current and dumping degree has been analyzed. then, an novel method to measure the capacitor current and dumping degree which is based on the signal inject is put forward
分析了消弧線圈接地系統中各種相關參數的計算和推導方法，同時研究了了基於信號注入法的脫諧度和阻尼率測量方法，並在實驗中驗證了這種方法的有效性。To improve its reliability, it is effective to investigate the dynamic change of the whole process from arcing to arc suppress
揭示電弧從燃弧到滅弧的動態變化過程，是提高低壓電器產品可靠性的有效途徑之一。These bacteria produced during the fermentation will also help inhibit the growth of vibro pathogens and decompose pollutants shrimp and fish excreta and feed. this procedure will provide consistant water quality. amazerm can also inhibit the parasitic disease in the cultured animal
如此俟環境水質改善後再放養魚蝦苗，環境水體中有機活菌光合細菌硝化細菌族群除能抑制病原弧菌外，亦能適時分解水中污物飼料殘餌魚蝦類排泄物等有效改善水質及底質。Abstract : the working principle, structure and parameters design of plasma arc generator for heat treatment are described. experiment has shown that it has good effect on partial surface hardening
文摘:論述了用於金屬材料表面熱處理的等離子弧發生器的工作原理、結構特點和參數設計。試驗證明這種發生器對材料的表面局部硬化非常有效。Summary by reformming exist bury arc welding machine, current rang of welding machine is changed, it absolved small batch - process by thin and thick welding parts, promote efficiency, save the money and extend scope of application of welding machine
通過對現有埋弧焊機改造，使焊機的電流調節范圍改變，解決了小批量超厚超薄件的生產，提高了效率，節省了開支，擴大了焊機的適用范圍。In the wrscs, the self - consistent model is used to describe the complex configurations of the particulate composite and the temperature field is solved by weighted residual collocation method with some proper simplifications. this method provides a more efficient way of setting up the algebraic equations corresponding to the governing differential equations. the prediction formula for the effective thermal conductivity of the composite is obtained
權殘自洽方法可以用於描述不同形狀夾雜的復合材料的微觀結構，通過對不同幾何形狀角點做適當的圓弧化處理，採用加權殘值數值計算方法的配點法將求解微分控制方程變為求解線性方程組，進而得到任意形狀夾雜內部的溫度場，建立含不規則形狀夾雜的復合材料有效熱導率的預測公式。In this paper, associated with the key problem of 550kv sf6 high voltage circuit breaker which is used in gis of three gorges project, the mathematical models of static electrical field and one - dimensioned and two - dimensioned gas flow field during the overall breaking process in arc chamber of circuit breaker are developed. on the basis of gas discharge theory, the criteria to judge the interruption success is determined. through the combination of one - dimensioned and two - dimensioned gas flow field software, the problem that the primary two - dimensioned gas flow field software ca n ' t calculate the hot gas flow field has been effectively solved
本文結合長江三峽550kvgis中sf6斷路器的科技攻關項目，建立了斷路器開斷過程中滅弧室內靜電場、一維氣流場、二維氣流場的數學模型；根據氣體放電的基礎理論選定了衡量斷路器能否成功開斷的標準，並通過一維和二維氣流場的有機結合，有效地解決了原二維氣流場計算軟體無法計算有載開斷的難題，具有較強的工程實用性。分享友人