過零點法 的英文怎麼說

中文拼音 [guòlíngdiǎnfǎ]
過零點法 英文
zero-crossing method
  • 過 : 過Ⅰ動詞[口語] （超越） go beyond the limit; undue; excessiveⅡ名詞（姓氏） a surname
  • 零 : Ⅰ數詞1 （零數） zero2 （數的空位） zero sign （0）; nought 3 （表示沒有數量;無） nil; nought 4 （...
  • 點 : Ⅰ名詞1 （液體的小滴） drop （of liquid） 2 （細小的痕跡） spot; dot; speck 3 （漢字的筆畫「、」）...
  • 法 : Ⅰ名詞1 （由國家制定或認可的行為規則的總稱） law 2 （方法; 方式） way; method; mode; means 3 （標...
  • 零點 : null point; zero end; zero point; zero; zero hour; null （函數或曲線的）零點標準（額） the nil no...
  1. Based on mono - pulse radar system and the analysis of terrain echoes, a geometrical model of air to ground ranging is constituted. by using the signals received from the sum and difference channels of terrain follow radar, a group of the expressions for terrain echoes are educed and characteristics of these echoes are obtained. according to the characteristics of the echoes, the theory and method of pass zero detection of difference channel and its applications are discussed in detail

    針對一維單脈沖雷達體制，分析了地形目標回波特性；建立了地形跟隨雷達空地測距的幾何關系；利用雷達收發信號，導出了地形跟隨雷達和差接收通道的回波信號表達式，進行了波形模擬，得到了地形跟隨雷達的地面散射產生回波在時域中的特性；根據和差回波特性，闡述了差信號過零點檢測測距的原理和方法及工程實踐中的應用，並給出了真實雷達對外輻射試驗的結果，驗證了文中的模擬。
  2. In general, a precise resistor is in series with one of the resistors in wheatstone bridge to compensate the zero offset, and the other one is in parallel with another arm of the wheatstone bridge to compensate thermal zero drift. based on this principle, in this paper, a compensation method based on virtual instrument technology has been put forward. actuated by current source, a good calculation method of compensation resistors and their position in the bridge is deduced

    本文基於串並聯電阻補償法的原理，提出了一種基於虛擬儀器的誤差補償方案，推導了在恆流源供電下可以精確的計算出補償電阻大小和補償位置的演算法，並且在虛擬儀器軟體平臺labview上完成了數據採集、處理、顯示等軟體的設計，經過實驗的驗證，對傳感器的零點溫度漂移補償取得較好的效果，而對靈敏度溫度漂移的工藝補償亦有一定的效果。
  3. In order to remedy the faults of the traditional pipe - leak detector based on the straight - correlation analysis method which has high demand for hardware and high price, the pipe - leak detector based on the polarity correlation algorithm with the cross - zero method is presented, the hardware design and the test is finished, the result only with the error from 1 % to 3 % is gained, and its feasibility is testifies

    針對採用直接相關法的傳統相關測漏儀對硬體要求高、價格較貴的缺點，將極性相關的過零演算法應用於相關測漏，並設計了硬體結構，進行了實驗模擬，在實驗室條件下，測量誤差約為1 % ~ 3 % ，驗證了其可行性。
  4. The merit of travelling waves location is its high precision, but it has dead line if the fault location is close to the line terminal or the fault occurs at the time close to zero point of current

    行波法測距的優點是精度高，但對近區故障或電流過零附近時刻發生的故障存在測距死區。
  5. In experiment process, firstly verify the system using three points method and meanwhile adjust the zero, compiete measurement and checkout measurement

    試驗過程首先進行系統標定，三點法校準，進行調零、滿度、中值校驗。
  6. When a ferromagnetism items is under the application of stress, the phenomenon that the tangential component of magnetic leakage field has maximum value and that the normal component of magnetic leakage field changes polarity and acquires zero value at the stress concentration zone will take place

    鐵磁性工件在受到應力作用時，在應力集中處會有漏磁場的切向分量出現最大值、同時法向分量改變符號且過零值點的現象。
  7. Then one of the methods of rotor position detection - bemf zero crossing point detection is explained in detail. in succession, the chapter dissertates the method of measuring phase voltage and supply voltage, and analyses the error of rotor position using this method

    對轉子位置檢測方法中的反電勢過零點法作了比較詳細的介紹，討論了反電勢法中相電壓和端電壓的檢測方法，並分析了利用該方法時而產生的轉子位置檢測誤差。
  8. Second, as currently study of hot point, back ? emf, it will discuss the principle of the sub - position examination in detail. based on the principle, it put forward a kind of improving back - emf method of crossing - zero checking turns position. but this did n ' t resolve to the root problem that the speed scope is very narrow and it need an in expiation of speed error and so on. thus it put forward a new improvement method at next chapter

    其次，就目前所研究的熱點? ?反電勢法，詳細討論了其轉子位置檢測的原理，在此基礎上提出了一種改進的反電勢過零點檢測方法，其可直接從電機端部得出反電勢對地的電壓值，而不是通過電機中心點電壓來得到反電勢。
  9. In this chapter, the method of bldcm rotor position detection is first discussed. then the principle and algorithm of bemf zero crossing point detection is explained. in succession, the chapter dissertates the software realization of the bemf zero crossing point detection algorithm, the software disturbance filter and the modification of phase displacement, and the software realization of commutation point

    在這一章中，先簡述了無刷直流電機的轉子位置器檢測方法；然後論述了反電動勢過零檢測原理和演算法以及該演算法的軟體實現、軟體濾波和相移修正、換相點的軟體實現；最後對軟體開環換相起動策略作了詳細論述。
  10. This paper uses " virtual neutral point method " to measure the " zero crossing ", then the soft deal " zero crossing " to get the six key position to commutate

    本文採用虛擬中點的方法來識別反電勢過零點，然後對過零點進行處理得到無刷電機換向的六個關鍵位置。
  11. Then the exisiting algorithms on iris location are studied and the disadvantages are pointed. a new approach based on edge detection, mathematic morphology and probability statistic is put forward. after studing the means of daugman ’ s encode of iris texture and w. w. boles ’ extraction the unique features by the zero - crossings of the wavelet transform, we adopted wavelet multi - resolution analysis that extract the feature

    在研究和分析了前人的虹膜定位演算法以及daugman對虹膜紋理的編碼方法、 w . w . boles的小波過零點分析提取虹膜特徵識別演算法的基礎上，研究了基於邊緣檢測和數學形態學以及概率統計等理論的一種新的虹膜定位方法;研究了虹膜圖像的歸一化和圖像增強;研究了基於db4小波的多分辯率分析的虹膜特徵提取演算法;研究了相關系數匹配識別。
  12. A method of pitch mark determination for a speech, includes : acquiring a fundamental frequency point and fundamental frequency passband signals by using an adaptable filter ; detecting a number of passing zero positions of the fundamental frequency passband signals ; and generating at least a set of pitch marks from a number of passing zero positions

    一種決定語音音高標記的方法，系藉以找出一語音之一組音高標記，此決定語音音高標記的方法系利用一可適性濾波器取得一基頻點與一基頻帶通訊號；求取基頻帶通訊號之復數個過零點位置；然後經由復數個過零點位置產生至少一組音高標記。
  13. The first part of the paper is designing the testing project for grounding resistance and insulation resistance in a new way. using 16bits ad converter with programmable control amplifier replaced the way which used changing resistance to change measure range. lt is not only improved testing precision and develop the system expediently, but also reduced the area of the circuit boardwith the new way. in order to make the electric implement safety testing system have upstanding expansibility, the software and hardware of the system adopted the modularization design. adopted mcu atmegal28 as a master mcu which control mmi, realtime clock and communication with slaver mcu. atemga8 as the slaver mcu to realize testing function. so it is easy to add or reduce the testing project. the testing implement system has been developed successfully, and the comments for the system is that it has high precision, high expansibility and easy maintain. but considering the electric implement system should have intelligence and humanity abi lity. so this paper bring forward a scheme of electric equipment safety testing embedded system with speech control. after introduce the basic theory of speech recognition, the paper expatiate the characters of this system. the system is a noise conditon, not special people, small glossary, insulation word system. with these characters design the speech recognition as fellow. utilizing cross zero ratio and short energy to ensure jumping - off point and end point ; adopting mfcc as the character parameters of speech recognition ; the character parameters than be recognized by dtw. in order to ensure the credibility of this project, first realized by matlab in computer

    在介紹了語音識別的基本原理后，闡述了本系統的特點：本系統是一個噪聲環境下非特定人、小詞匯量、孤立詞的語音識別系統。根據本系統的這些特點設計了如下語音識別方案：利用過零率和短時能量相結合的方式確定語音端點；採用mel頻率倒譜系數（ mfcc ）作為語音識別的特徵參數；得到的特徵參數最後通過動態時間規整（ dtw ）的模式識別方法進行識別。為了確保本系統實現方案的可靠性，首先通過計算機利用matlab軟體來模擬，在演算法模擬實現后又進一步增加環境的復雜性：加上較大的環境噪聲、突發性的噪聲等，再通過修改參數、修改參考模板、兩級識別等各種提高語音識別精度的方法來提廣東工業大學工學碩士學位論文高識別率。
  14. Terence mckenna and peter meyer ' s timewave zero software that graphs time as a fractal demonstrates by graph the accuracy of the winter solstice of 2012 as the correct end - date of the mayan calendar with graph anomalies appearing in the months of july

    特倫斯麥肯納和彼得梅耶的零點時間波軟體顯示的時間圖表是不規則碎片型，通過圖表上七月出現的不規則性來論證了2012年冬至日確實是瑪雅歷法的終結日。
  15. Above all, this paper work on the principle of simulink. principle of block and model are explained during initialization and execution stage. then runge - kutta ( 4, 5 ) formula which is a main numerical integration method of simulink and zero crossing detection function are analyzed

    從構成模型的基本單元? ?模塊入手，闡述其運行機理並對模型的執行階段進行全過程分析，然後介紹simulink的主要數值積分方法? ?四?五階變步長runge - kutta法的基本積分原理，以及simulink的拐點處理功能? ?過零點檢測技術（ zerocrossingdetection ）的基本原理。
  16. In the wavefield - spread area, we uses the phase - shift operator as constraint in frequency - wavenumber field, while beyond the wavefield - spread data, we uses zero point at the ends of phase - shift operator as constraint to take discrete smooth interpolation so that the resulted operator satisfies two - order smooth and the length of this operator can be selected shorter in frequency - space field

    通過離散光滑插值法，在頻率波數域中，以傳播區內的相移運算元為約束，在傳播區外的運算元兩端處以零點為約束，進行離散光滑插值，使得所得運算元具有二階光滑可導性，則其對應的頻率空間域中的運算元就可以取得很短。
  17. ( 6 ) the analysis on singularity configurations of the manipulator were investigated by the singular value decomposition of jacobian matrix, which was treated with the damped least - square method in the motion. from the results obtained it was indicated that the minimum singular value of manipulator calculated by the damping jacobian matrix were far from zero position. velocity, position and accelerate of all the joints of manipulator moved regularly, consequently the problem that the joint of mani

    （ 6 ）通過雅可比矩陣奇異值分解進行番茄收獲機械手奇異性分析，並採用阻尼最小二乘法對機械手運動中的奇異位形進行處理，使番茄收獲機械手最小奇異值遠離零點，各關節運動速度、位置和加速度運動無異常波動，解決了機械手在奇異位形處某些關節運動無法控制的問題。
  18. Due to the unique, stable and live physiological properties of the iris and non - invasive to users, most stable and reliable for identification in practical applications of iris - based system, iris recognition is receiving extensive attention and becoming an active topic in biometrics. as an application - oriented research project, iris recognition integrates mathematic, computer science, optics, electronics and physiology etc. based on wavelet transform, aimed to improve the recognition performance, centered at wavelet - based iris feature representation and pattern classification, we review and explore the iris sequence image quality assessment, iris image pre - processing, iris recognition performance evaluation and several other linked topics. we mainly investigate on the principles and application methodology of wavelet transform for iris feature representation and iris pattern classification methods

    以小波變換技術為基礎，結合圖像處理和模式識別方法，設計並開發了虹膜圖像採集裝置，建立了虹膜識別演算法測試實驗平臺;重點研究了虹膜識別中的小波變換的應用基礎理論與關鍵實現技術;提出了基於小波局部模極大值的虹膜特徵表示及其多重匹配識別、基於小波多尺度信息的一維和二維虹膜紋理特徵量化表示、基於小波過零點技術的虹膜特徵表示及其規范化的部分hausdorff距離匹配識別，這三類方法能夠有效地提取虹膜特徵;基於自建的演算法測試平臺，對上述三類方法和其他三種國內外比較有影響的基於小波變換的虹膜識別方法進行了定量的性能比較和評價，通過實驗數據分析得到了有意義的結論;最後指出了小波變換技術在虹膜識別領域的研究重點與發展方向。
  19. The initialization method to achieve different equalizer delay local minimum is proposed for btea and se. comparison study using several uwac with different zero locations is made to demonstrate the equivalent of different initialization method for least mean square ( lms ) algorithm, btea, se and cma

    盡管常數模盲均衡演算法的初始化仍然是一個公認的未能解決的問題，但本文通過幾條不同零點位置的水聲通道，對比研究了自適應最小均方誤差演算法、倒三譜演算法、超指數演算法和常數模演算法的不同權向量初始化的等效性。
  20. The zero creep and other error source has been analysed. thereafter disposal and error compensation about horizon has been lodged, demonstrated the feasibility by practical application

    對horizon零點漂移及其他誤差源進行了分析，並由此提出了其後置處理與誤差補償方法，並通過模擬驗證了其可行性。
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