方形波發生器 的英文怎麼說

中文拼音 [fāngxíngbōfāshēngqì]
方形波發生器 英文
square wave generator
  • 方 : Ⅰ名詞1 （方形; 方體） square 2 [數學] （乘方） involution; power 3 （方向） direction 4 （方面） ...
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 發 : 名詞（頭發） hair
  • 生 : Ⅰ動詞1 （生育; 生殖） give birth to; bear 2 （出生） be born 3 （生長） grow 4 （生存; 活） live;...
  • 器 : 名詞1. （器具） implement; utensil; ware 2. （器官） organ 3. （度量; 才能） capacity; talent 4. （姓氏） a surname
  • 方形 : square; tetragonum
  1. And understanding and studying the spectral features and variation rules of geo - targets in the experimental area, raising that it is the basis of geo - targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo - targets, realizing that in a great extent spectral - integrated - form - based classification method can remove the phenomenon of " different spectrum with same objects " resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo - target with similar spectral forms and much different values of whole reflection ratio. it is suggested that " red edge " range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel - based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. the remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed

    研究結果如下：首先針對荒漠化地區的地物特徵，對高光譜數據不同波段的數據質量、波段組合進行了評價，提出了適用於荒漠化監測的基本波段選擇集；初步了解和掌握了研究地區的地物光譜特性及變異規律，進一步明確了掌握地物光譜特徵和變異規律是用成像光譜儀數據提取地物信息的基礎；發現了基於光譜整體形狀的分類方法在很大程度上能夠消除由於傳感器、地物目標觀測方向之間的角度變化引起的反射率曲線整體平移的「同物異譜」現象，對于譜形相似而整體反射率的值相差較大的兩類地物，通過引入均值和方差圖像參與分類得到解決；研究還表明在植被「紅邊」范圍內的波段是進行荒漠化監測的主要特徵波段，這些波段與植被生物量和蓋度都有密切的關系，是開展精細植被分類研究和植被定量反演的重要基礎；像元的導數光譜分析可以消除土壤背景的影響，是進行植被生物量和蓋度定量反演的有力工具；建立了荒漠化監測主要評價因子的定量反演模型，並分析了模型的適用性。
  2. Based on chaos circuit, this paper discusses two application modes, random rectangle wave oscillator and chaotic inflator and introduces intensively methods and their results of computer

    基於混沌電路，論述了兩種應用方式：隨機矩形波發生器和混沌振動器，並詳細介紹了計算機模擬方法和結果。
  3. This paper starts the research of the liquid floated pendulous accelerometer testing system according to the engineering. at first, this paper gives the brief introduction of the history and present status of accelerometer and its testing technology, the working principium and math model of the liquid floated pendu - lous accelerometer, and then, decides the binary width pulse force retrim loop as the design proposal of testing system, researches the transfer function of every part in the system emphasizly, analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system, and designed the correcting net, analyses the basal problems such as resolution, sampling restraint, precision and so on, designs the hardware testing circuits such as preamplification, band - pass filter, alternating amplifier, phase sensitive demodulatorn, pulse - width modulation, frequency scale circuit, moment current generator. finally, using the graphics program language labv - iew which is designed for testing field especially by ni accomplishes the solfware design of testing system, realized the testing functions

    首先對加速度計及其測試技術的發展歷史和現狀，液浮擺式加速度計的工作原理和數學模型等作了簡要的介紹，然後確定了以二元調寬脈沖再平衡測試迴路為設計方案，並從控制理論的角度進行了分析，著重研究了系統中各部分的傳遞函數，利用系統開環傳遞函數分析了系統的穩定性，同時設計了系統的校正網路;分析了二元調寬脈沖再平衡測試迴路的解析度、采樣約束以及測試精度等基本問題，並按照系統分析的結果設計了包括前置放大、帶通濾波、交流放大、相敏解調、脈寬調制、頻標電路以及力矩電流發生器等測試系統各部分硬體電路，驗證了電路的正確性，最後按照測試系統的要求，採用了美國ni公司專為測試領域所開發的虛擬儀器工具? ? labview作為測試軟體開發工具，利用該圖形化編程語言完成了測試系統軟體部分的設計，實現了測試功能。
  4. ( 4 ) the modification theory is deduced in the condition of preserving the motion state of the end face harmonic gear drive of oscillating teeth

    （ 4 ）在分析活齒端面諧波齒輪傳動裝置運動狀態的基礎上，提出了端面齒輪、活齒和波發生器端面凸輪齒面的修形方法。
  5. Firstly, the hertz contact theory is used to design the export moment of the prototype ; deformation status of the flexspine under the elliptical cam wave generator action is analyzed using the column shell theory, whose boundary condition is four force action. design proposal of the wave producer put forward considering the precision theory of rolling friction transmission

    首先用赫茲接觸理論對樣機的輸出力矩進行了設計;應用四力作用下的光滑圓柱殼體理論分析了在橢圓凸輪波發生器作用下柔輪的變形狀況，結合滾動摩擦副傳動精度理論提出了波發生器總體設計方案。
  6. It has wide frequency width and high frequency relution. the maximum output frequency can get to 80m and the highest frequency relution can get to 1 u hz, the waveform memory is 64k. it has the important reference value for three classical structures - pc bus card, stand alone, vxi module

    該任意波形發生器不僅能產生正弦波，方波，三角波等常用的標準信號，還可根據用戶的需要生成任意波形，具有寬頻帶，高的頻率解析度等特點，其波形最高輸出頻率可達80m ，頻率解析度可達1 hz ，波形最大存儲深度為64k ，對于目前三種典型的任意波形發生器的結構? pc總線插卡式，獨立儀器， vxi模塊都有重要的參考價值。
  7. According to the principles of piezoelectric smart concrete structure health monitoring, a mathematic model of monitor system for static performances is discussed. then, the virtual waveform generator based on dds is designed using a data acquisition card and a pc to supply multiform excitation signals to piezoelectric elements in experiment. the theoretical analysis and experimental research demonstrate the performances of the waveform generated by the virtual instrument

    為了給壓電元件提供多種類型的激勵信號，根據直接數字合成原理，設計了利用數據採集卡和計算機實現dds波形發生的虛擬儀器，並對生成波形的各方面性能進行了理論分析和實驗研究，從理論和實驗兩個方面分析了這種波形發生方式所能取得的效果。
  8. In experiment process, aim at the current rotary encoders output is not ttl wave type, the writer designs the hardware integrated circuit by that can turn the current wave into ttl wave, and it obtains the good result. finally the thesis creates the pcb card of the chip module, and makes use of the hp signal occurrence apparatus 33120a finishing the on - line data collection, give out and analysis the experiment result

    在實驗過程中，針對現有圓光柵編碼器輸出波形為正弦波，設計了正弦波轉為方波的硬體集成電路，取得了很好的效果；製作了下位單片機系統的pcb板；最後利用hp33120a信號發生器，對其發出的信號進行實時採集，給出了實驗結果並加以分析。
  9. 4. demonstrating the structure and design of the counter + delay - line module, by which the pulse waveforms with given pulse delay and pulse width delay can be generated

    4 .設計計數器+延遲線模塊的組成及方案，並據此實現根據觸發信號產生的具有一定脈沖延遲和脈沖寬度的脈沖波形數字信號。
  10. Arbitrary waveform generator can satisfy people ' s demand, because it can produce not only standard signals but also complicated signals expediently

    摘要任意波形發生器不但可以輸出標準信號，而且可以方便地產生復雜波形，以滿足人們的需要。
  11. Finally, the wave equation of the electromagnetic field of this kind damper is derived from the maxwell ' s equation. the magnetic flux density at the boundary is assumed to be harmonic, so the analytical result of the wave equation is solved. when the rotor rotates, eddy currents flowing inside the conducting material field are caused

    最後，應用ahrens的電磁軸承簡化模型，從maxwell方程出發推導了應用於本文所述的被動式電磁阻尼器的波動方程，並用傅立葉級數把矩形磁場展開的諧變磁場作為磁場的邊界條件，通過求解波動方程得到磁場的解析解，從而計算了阻尼器對轉子的電磁力和由渦流引起的切向力產生的阻尼器附加功耗。
  12. Associated with the military project " high speed arbitrary waveform generator ( awg ) module ", this thesis focuses on the designing methodology of analog channel of the awg developed by uestc. signal filtering, amplitude and offset controlling, square wave and modulating wave ' s generating are studied in detail and corresponding circuit implementation are developed

    本文結合電子科技大學承擔的軍用型號項目「 vxi任意波形發生器es14v21 」 ，展開對任意波形發生器模擬通道設計技術的研究，詳細討論了信號的濾波、放大、衰減、加偏處理以及方波和調幅波的產生方式，並設計了具體電路。
  13. A square sensing area was formed upon each of the saw propagation paths using photoresist. when some kind of material deposits on this area, the saw propagation velocity will decrease due to the mass - loading effect, causing a shift in the device ' s oscillation frequency, which gives indication of the mass deposited. the dual - path architecture, one for sensing and one for reference, was used to compensate for the disturbance of temperature

    利用光刻工藝在每個聲傳播路徑上構造了一個方形質量沉積區，當有物質沉積到該區時，由於質量沉積效應，聲表面波的波速發生變化，使以延遲線作為反饋迴路的振蕩器的振蕩頻率發生變化，並通過這一變化反映出沉積物的質量。
  14. In the light of “ the 100msa / s arbitrary waveform generator ”, a project undertaken by the university of electronic science and technology of china, this paper focuses on “ the interface design of arbitrary waveform generator ”, expounding the concepts of usb communication, wdm driving structure and so on. some technical ways have been put forward, through analyzing the realization of some kinds of interface and the key technical difficulty which should be surmounted. on the basis of hardware design of interface, author presents the hid - usb firmware structure and the design of windows application software, and then gives a set of specific design steps

    結合電子科技大學承擔的項目「 100msa / s任意波形發生器」 ，本文圍繞「任意波形發生器介面系統與軟體設計」這一課題展開研究，闡述了usb介面通信、 wdm驅動結構等相關概念;通過分析幾種介面電路實現的優缺點和關鍵技術，提出了技術解決途徑;在確定介面硬體電路設計的基礎上，給出了hid - usb固件架構和windows應用程序的設計方案，並進行了具體的設計實現;最後針對調試中出現的問題，進行了較深入的分析，提出了實際的解決措施。
  15. In this paper, the mechanics model and computer control method for electromagnetism vibration feeder are studied. the emphases are put on the seeking of optical motion states and the realization of these states by computer control. using labview ( laboratory virtual instrument engineering workbench ), a waveform generator is established to control the electromagnetic force

    本文對電磁振動給料機的力學模型與計算機控製做了比較深入的分析和研究，特別是給料機的力學分析與最佳運動狀態、電磁鐵的一些特性和用labview實現計算機控制，在與傳統的控制方法對照的情況下，建立了對比較周全的力學模型，提出了利用labview程序產生一個波形發生器，經過放大后對電磁鐵進行控制。
  16. In this paper, a three - dimensional ( 3d ) program for the three - dimensional reactive flow fields of complicated geometric nozzle, which governed by the compressible full navier - stokes equations with realizable k - s turbulent model, has been upbuilt by using full implicit couple arithmetic and fvm ( finite volume method ) based on understanding and assimilation of a two - dimensional program group of cr ( chamber - radon ). the new program fulfils the urgent need of numerical tools for simulating three - dimensional reactive flow - fields of hylte ( hypersonic low temperature ) and other latest nozzles, for which cr is out of action in simulation, and can be applied to simulate other chemical laser system, such as chemical oxygen iodine laser ( coil ), overtone fluoride hydrogen, all - gas iodine laser, and so on. furthermore, some related topics about nozzles design and engineer ing also have been discussed

    本文在二維cr （ chamber ? radon ）程序研究的基礎上，採用有限體積方法和完全隱式的耦合演算法，通過求解帶realizablek -兩方程湍流模型的多組分、有反應的三維完全納維埃?斯托克斯（ n ? s ）控制方程，建立了一套能夠對復雜形狀的三維噴管和光腔進行數值模擬的三維程序，解決了連續波df hf化學激光器增益發生器設計缺乏三維數值模擬工具的問題，並用該工具解決了cr程序無法實現的hylte等復雜三維噴管流場的理論模擬問題。
  17. Therefore, it has been widely used in the domains of communication, radar, navigation, etc. this article focuses on the generating of the function waves which include sine wave, triangle wave and square wave, depict the concepts of dds ( direct digital synthesis ) and surveying frequency on equal precision, analyze the key techniques in the development and present solutions of function generator. author also present the system structures of hardware and software, discuss the performance indexes and consider the possibility of the system. finally, with respect to the problems in debugging and testing process, author do some analyzing and present the practical solutions

    本文主要圍繞函數發生器輸出的正弦、三角和方波三種基本波形的產生這一課題來展開，闡述了其中的直接數字合成（ dds ） 、等精度測頻等概念;分析了研製函數發生器所需攻克的關鍵技術，提出了技術解決途徑;對方案軟體進行編制和系統進行設計、安裝調試，實現了課題功能;最後針對調試中出現的問題，進行了較深入的分析，並提出了實際的解決措施。
  18. The extensive applications for power electronic apparatus and nonlinear equipment distort the waveforms of voltages and currents. as a result, power quality is going much worse. in addition, due to the improvement of industrial automatization, such parts of an apparatus as mpu and plc are applied to industrial process controls, which are disturbed easily by stirs from power system

    一方面由於電力電子器件和非線性設備的廣泛應用，使得電網中的電壓、電流波形發生畸變，造成電能質量的嚴重惡化；另一方面由於工業自動化水平的提高，微處理器和plc等智能器件大量應用於工業過程式控制制，而這些精細過程式控制制更容易受到電力系統抖動的影響，因此現代工業對電能質量提出了更高的要求。
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