拓撲變換 的英文怎麼說

中文拼音 [tàpūbiànhuàn]
拓撲變換 英文
topological transformation
  • 拓 : 拓動詞（把碑刻、銅器等的形狀和上面的文字、圖形印下來; 拓印） make rubbings from inscriptions pict...
  • 換 : 動詞1. （給人東西同時從他那裡取得別的東西） exchange; barter; trade 2. （變換; 更換） change 3. （兌換） exchange; cash
  1. In this thesis, used thermocouple to sense the temperature in the space of the hearth, attributed the thermocouple based on calorifics and scientific arithmetic, acquired data by data acquiring card, processed data according to the demand of setting up temperature model and drawing graphics and then caculated the coordinates of isothermal points and normals of isothermal facets, ascertained the order of connecting points and the model of construct, drawed the isothermal facet of temperature field with opengl at last

    通過數據採集板卡進行數據採集並與計算機介面進行數據處理。然後，將處理后特殊點的溫度數據依據marchingcubes演算法建立數學模型求取等溫面上的點的坐標及各點的法向量等。最後，確定計算的三維坐標點的連接順序和拓撲模型，利用opengl進行等溫面的繪制、消隱和模式變換等工作。
  2. As we all known, with the founding of euclidean geometry in ancient greece, with the development of analytic geometry and other kinds of geometries, with f. kline " s erlanger program in 1872 and the new developments of geometry in 20th century such as topology and so on, man has developed their understand of geometry. on the other hand, euclid formed geometry as a deductive system by using axiomatic theory for the first time. the content and method of geometry have dramatically changed, but the geometry curriculum has not changed correspondingly until the first strike from kline and perry " s appealing

    縱觀幾何學發展的歷史，可以稱得上波瀾壯闊：一方面，從古希臘時代的歐氏綜合幾何，到近代解析幾何等多種幾何的發展，以及用變換的方法處理幾何的埃爾朗根綱領，到20世紀拓撲學、高維空間理論等幾何學的新發展，這一切都在不斷豐富人們對幾何學的認識；另一方面，從歐幾里得第一次使用公理化方法把幾何學組織成一個邏輯演繹體系，到羅巴切夫斯基非歐幾何的發現，以及希爾伯特形式公理體系的建立，極大地發展了公理化思想方法，不管是幾何學的內容還是方法都發生了質的飛躍。
  3. Based on the thorough investigation of the post - regulation and efficiency in multiple output switching - mode power supplies, an optimal combination topology for multiple output switching converter is presented in this thesis, which is consisted of forward converter with active clamp ( fac ), synchronous rectification ( sr ) techniques and magnetic amplifier technique ( magamp )

    本文通過研究分析近年來多路輸出開關電源輔助輸出電壓調節和提高效率的方案，面對開關電源朝著輸出低電壓大電流方向發展的趨勢，提出多路輸出開關電源新的拓撲優化組合模式? ?有源鉗位正激變換器、同步整流技術、磁放大器。
  4. Then novel circuit structure of bi - directional voltage mode ( based on forward converter ) inverters with high frequency link, are proposed, which is constituted of input cycloconverter, high frequency transformer, output cycloconverter, input and output filter ; the circuit topologies family of this bi - directional voltage mode inverters with high frequency link include six circuit topologies, such as push pull - full wave mode, push pull - full bridge mode, half bridge - full wave mode, half bridge - full bridge mode, full bridge - full wave mode, and full bridge - full bridge mode etc. taking full bridge - full bridge mode circuit as an example, principle of uni - polarity phase shifting controlled bi - directional voltage mode inverters with high frequency link is introduced

    本文首先論述了dc / ac逆變技術的應用前景及發展現狀。基於正激forward變換器的雙向電壓源型高頻環節逆變器電路結構，由輸入周波變換器、高頻變壓器、輸出周波變換器、以及輸入、輸出濾波器構成;雙向電壓源高頻環節逆變器電路拓撲族，包括推挽全波式、推挽橋式、半橋全波式、半橋橋式、全橋全波式、全橋橋式六種電路。
  5. A novel bi - directional dc / dc converter was introduced in the dissertation, which based on refer much converter data. the soft switching, phase - shifted pwm and bi - directional dc / dc converter hang together, depress circuit switch ullage and noise effectively, which provide condition to increase switch frequency, efficiency and reduce size and weight for the converter ; at the same, the converter have the virtue of structure compact, voltage and current stress small etc such as ordinary hard switch converter

    本文作者在查閱國內外大量雙向dc dc變換器資料的基礎上，採用一種新型雙向dc dc變換器的拓撲結構，把軟開關技術和移相控制pwm技術以及雙向dc dc變換器技術有機結合在一起，有效地降低了電路的開關損耗和開關噪聲，為變換器裝置提高開關頻率、效率以及降低尺寸及重量提供了良好的條件。
  6. Mapping transformation method for topology optimization of contin - uum structures under multiple loading cases and stress constraints

    多工況應力約束下連續體結構拓撲優化映射變換解法
  7. Through comparison of characteristics for different dc / dc topologies, buck - boost converter was selected as main topology of the power system

    在充分考慮不同dc / dc變換器拓撲特點的基礎上，本文選用了buck - boost作為系統的主電路拓撲。
  8. Switch - based interconnects with irregular topology allow the wiring flexibility, and incremental expansion capability required in this environment. however, the irregularity also makes routing and deadlock avoidance on such systems quite complicated

    Autonet ， myrinet等用於nows的交換式高速網路使布線靈活、系統可擴展能力加強，但其拓撲的不規則性使路由避免死鎖的問題變得復雜。
  9. 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。
  10. Drawing the intersection line of two quadric by the method of ellipse arc projection and topological transformation

    橢圓投射和拓撲變換解兩曲面相貫線
  11. The analysis reveals that single - switch converter can not be converted into tl topology by the basic method because of its asymmetry

    分析表明，由於單管直流變換器結構的不對稱性，無法使用基本變換方法對其進行三電平拓撲變換。
  12. The corresponding optimal topology configuration transition problem is studied based on the generation algorithm, and the process is also simulated

    基於遺傳演算法，研究了該自重構機器手的最優構形拓撲轉換問題，並對構形拓撲變換的整個過程進行了模擬。
  13. 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。
  14. First, the principle of fuzzy reasoning based on topological transformation is constructed, then fuzzy topology based on inference rules and reasoning function is obtained

    在推理規則的前提與結論集合上分別建立fuzzy拓撲，構造出了拓撲變換推理函數。其次，研究了拓撲變換推理函數的性質。
  15. In this paper, under the circumstance of fuzzy information, a fuzzy reasoning method based on topological transformation is given by employing theory of fuzzy mathematics and fuzzy topology

    本文以fuzzy拓撲和模糊數學的理論與方法為基礎，提出基於模糊信息環境的模糊推理方法? ?基於拓撲變換的模糊推理。
  16. Further, general procedure of this method is summarized. finally, the connection between topological transformation reasoning function and uniform space is studied. in addition, the group in uniform space is created

    最後，討論了拓撲變換推理函數關系與一致空間的聯系，構造出一致空間的群結構，這為構造推理函數提供了一定的理論基礎與方法。
  17. In this paper, the basic commutation cell in multilevel converters is proposed, based on which a series of multilevel converters with flying capacitors are derived. the operation principle of buck ml converter and its output characteristics are analyzed in details in this paper

    本文總結了飛跨電容型多電平變換器的拓撲變換思路，並將其推廣到boost 、 buck - boost 、 cuk 、 zeta和sepic變換器中，得到一族飛跨電容型多電平直流變換器。
  18. Its main advantages are soft - switching while operating at constant switching frequency and a simple control. in order to be applied under more high voltage, the fb converter can also be converted to tl topology. using the basic tl topology derivation method, fb tl converter can be deduced

    應用三電平拓撲變換的基本方法，直接得到了全橋三電平直流變換器的拓撲結構，使其開關管的電壓應力降到輸入電壓的一半，進一步拓寬了全橋直流變換器的應用范圍。
  19. With the best modulation strategy which was found on condition that it must have largest energy transfer ratio, smallest current ripple of the inductor, and realizing zvs of each switches, the converter overcomes the drawbacks presented by the conventional zvs fb converter, such as high voltage stress of each switches, large current ripple of the inductor, and severe parasitic ringing on the rectifier diodes, so it can get higher efficiency, faster respond speed, and wider application area. the operation principle of the proposed converter is analyzed and verified by a 3kw, 50khz experimental prototype. experiments and research results show that the scheme of the tl topology derivation is reasonable, adjusted modulation strategy makes some other severe problems in conventional topologies easy to solve or makes the converter more competitive

    研究結果表明，本文提出的三電平拓撲變換方案合理，針對各種三電平拓撲尋找到的控制策略可以解決變換器存在的某些問題或使變換器表現出更突出的優勢：例如針對單管直流變換器三電平拓撲的控制策略可以減小電感的設計值，針對推挽直流變換器三電平拓撲的控制策略可以實現開關管的軟開關、解決變壓器偏磁問題等，針對全橋直流變換器三電平拓撲的控制策略可以減小電感的設計值、實現開關管的軟開關等。
  20. Adopting the globe pole mapping method of space analytic geometry, forming a topological mapping model from the high dimensionality vector to the low one, and then realizing a corresponding mapping from the rectangular matrix high dimensionality space text set to the low dimensionality space text set, finally, composing the corresponding arithmetics, accordingly solving the problem of nonlinear dimensionality reduction for text mining effectively, and overcoming some drawbacks in the former researches

    摘要採用了空間解析幾何中的球極映射方法，形成高維向量到低維向量的拓撲變換模型，實現了矩陣形式的高維空間文本集合到低維空間文本集合的一一映射，編制了相應的演算法，從而有效地解決了文本挖掘中的非線性降維問題，克服了以往研究中的缺陷。
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