正交變換 的英文怎麼說

中文拼音 [zhēngjiāobiànhuàn]
正交變換 英文
orhtogonal tansformation
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 交 : Ⅰ動詞1 （把事物轉移給有關方面） hand over; give up; deliver 2 （到某一時辰或季節） reach （a cert...
  • 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. A class of nonlinear local orthogonal transformations for helmholtz equation

    方程的一類非線性局部正交變換
  2. In the phase of image pretreatment, the main jobs of this system includes dot operation, image swell, positive chiasma transform, edge extraction and edge swell, outline track, etc. because the visual system itself is a neural system, systematizer designed in the paper adopts bp neural network to accomplish computer image identification, the system has some advantages over the traditional one, but with the extensive application of bp neural network, the problems existing in bp neural network come forth increasingly

    在系統軟體設計部分中，首先是對所選零件進行模式識別，包括圖像預處理、特徵提取和分類器設計三個階段，其中在圖像預處理階段本系統主要做的工作有：點運算、圖像增強、正交變換、邊緣提取和邊緣增強、輪廓跟蹤等。由於視覺系統本身就是一個神經系統，故本文所設計的分類器採用bp神經網路，其具有一些傳統技術所沒有的優點。
  3. In solving the helmholtz equation in the acoustical waveguides with a curved bottom, slow convergence may occurs when the linear local orthogonal transformation is adopted. in this paper, a class of nonlinear local orthogonal transformations ( nlot ) is proposed. it is an approach to improve the slow convergence mentioned above

    本文嘗試通過在深度方向選取非線性局部正交變換，將曲底求解區域化為平坦求解區域，然後求解helmholtz方程的辦法，來改善用線性（深度方向）局部正交變換時，步進求解時會出現的局部收斂慢的問題。
  4. In this article the operation of interleaving two - transistor forward topology and average current - mode control are discussed

    本文研究了交錯並聯雙管正激變換器主電路拓撲的工作原理和平均電流控制方式。
  5. The general forms of the transformed new equation and the coefficients are also given. numerical simulations show that it can be efficiently used in solving the helmholtz equation

    數值模擬表明，適當地選取某些非線性局部正交變換來求解在曲底區域中的helmholtz方程，確實可以改善數值求解的效率。
  6. In this paper, the working principle of the interleaving two - transistor forward converter is analyzed in detail, and the waveforms of the switch drain - to - source voltage and transformer magnetizing current are researched in different duty cycle conditions. the simulation model is constructed and the simulation results verify the analysis

    本文分析了交錯並聯雙管正激變換器的工作原理，研究了在不同占空比條件下開關管的漏源電壓和變壓器勵磁電流波形，建立了模擬模型，模擬結果證明理論分析的正確性。
  7. The goal of this paper is, by serial / parallel combination technique of two - transistos forward converters ( ttfcs ), to keep the merits of the ttfc, and to overcome the shortages of it. the interleaving technique is adopted, while in combining ttfcs. the interleaving technique lowers the net ripple amplitude and raises the effective ripple frequency of the overall converter without increasing switching losses or device stresses

    組合式雙管正激變換器由雙管正激變換器串並聯構成，應用交錯控制策略，在保留雙管正激變換器功率開關管電壓應力低和可靠性高的優點同時，克服了等效占空比小、副邊二極體電壓應力高、輸出電流脈動大等缺點。
  8. Based on orthogonal transform, a new method of tracking power grids frequency has been provided

    摘要基於正交變換，提出了一種新的電網頻率跟蹤方法。
  9. The interleaving two - transistor forward converter succeeds to the advantages of the two - transistor forward converter, it has two units working alternately, the power loss of the converter is distributed and the output voltage ripple frequency is twice of the switching frequency

    交錯並聯結構式的雙管正激變換器，繼承了雙管正激變換器的優點，兩個並聯單元互補工作，分擔了功率損耗，等效占空比擴大了一倍，輸出電壓的脈動頻率變為功率管開關頻率的兩倍。
  10. The theory basis for medium frequency receive includes sample theory, the signal ' s orthodoxy transform theory, multi - rate digital signal processing theory and signal ' s modulation and demodulation theory

    中頻數字接收的理論基礎是信號的奈奎斯特采樣定理或帶通采樣定理，信號的正交變換原理，多采樣率數字信號處理原理以及信號的調制解調理論。
  11. The application of orthogonal transformation in multiple integrals

    正交變換在多重積分中的應用問題
  12. Compared with full - bridge or half - bridge converter, a two - transistor forward converter has no risk of direct break - through in the two transistors of the same leg, it is suitable for high voltage input high power output application

    另外，和全橋變換器或是半橋變換器相比，交錯並聯雙管正激變換器不存在橋臂直通的缺陷，因而比較可靠。因此，它適合於高壓輸入大功率輸出的應用場合。
  13. The application of extended symmetry in orthogonal transformation

    拓展對稱在正交變換中的應用
  14. A simple method of solving an orthogonal transformation with a primary transformation is presented by change quadric form into canonical form

    給出了利用初等變換求一個正交變換化實二次型為標準形的簡便方法。
  15. In this paper, the author discusses the orthogonal transformation, pointing out that there is difference in essence between the two condition of equivalence

    摘要對歐氏空間正交變換作了討論，指明了兩個等價條件的不同之處。
  16. Abstract : a simple method of solving an orthogonal transformation with a primary transformation is presented by change quadric form into canonical form

    文摘:給出了利用初等變換求一個正交變換化實二次型為標準形的簡便方法。
  17. The key technology of the moving load identification is realized with the certain precision by using the generalized ortho - polynomial method, and the dynamic moving load identification model in generalized ortho - polynomial domain is established

    本文在載荷勻速移動的基礎上，將時域識別的方法推廣運用到變速運動的載荷，運用廣義正交變換技術研究了移動載荷識別的新方法，並推導出了在廣義正交域下移動載荷識別的數學模型。
  18. Discrete cosine transform ( dct ) is one of common transform encoding technique in common use of image compression. because such advantages as relatively matured theory, arithmetic and hardware ; ease to move relativity ; fit human vision system ; less calculation ( not include plural calculation ) : ease to realize and so on, dct compression is widely used

    離散餘弦變換（ dct ）是圖像壓縮中經常用到的正交變換編碼技術，由於理論、演算法和硬體相對成熟，去相關性好，適應人眼的視覺特性，計算量不大（沒有復數計算） ，易於實現等優點， dct壓縮編碼的應用非常廣泛。
  19. This paper discusses the hardware system architecture of broadband software radio experiment platform, designs hardware circuit system, studies the basic theory of software radio deeply, establishes the mathematical model. the platform is made up of a / d ( ad6640 12bit 65 msps ), orthogonality transform, digital filtering and dsp, etc. the platform can demodulate pcm - am / fm / pm / ask / fsk / psk / qpsk, pcm - cdma - psk, pcm - qpsk signal

    本文論述了寬帶軟體無線電接收實驗平臺硬體系統的體系結構，設計了硬體電路系統，深入研究了軟體無線電的基本理論，建立了接收實驗平臺的數學模型。該平臺由高速a d變換器（ ad664012位65msps ） 、正交變換、數字濾波器、 dsp等部分構成。實現了pcm - am fm pm ask fsk psk qpsk ， pcm - cdma - psk qpsk調制方式的解調功能。
  20. Firstly, this paper introduces the basic theory and the key technology of digital intermediate frequency system, secondly the method of the sampling rate conversion, multirate signal, and which is the important, essential theory in digital intermediate frequency system, is studied carefully. then it analyses the components of the flow chat. finally we simulated the designed system on spw and the properties of the system is make out

    文章首先闡述了數字中頻系統的基本思想、關鍵技術和發展概況，然後研究了數字中頻系統涉及的數字信號處理理論，主要內容包括欠采樣技術、多速率信號處理、正交變換理論與高效數字濾波技術，然後詳細分析了數字中頻系統的設計，並在spw模擬平臺上加以實現，最後根據模擬結果分析了數字中頻系統的性能。
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