點信號發生器 的英文怎麼說

中文拼音 [diǎnxìnháofāshēngqì]
點信號發生器 英文
dot generator
  • 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「、」）...
  • 號 : 號Ⅰ名1 （名稱） name 2 （別號; 字） assumed name; alternative name3 （商店） business house 4 （...
  • 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
  1. The crank reference pulse originates from a variable reluctant pickup which senses a projection on the engine's flywheel.

    曲柄參考點脈沖信號由一個變磁阻傳感器產生，它從發動機飛輪上的突起感受信號。
  2. The outlines of thesis are as follows : for the configuration of gis and the characteristic of partial discharge, the thesis analyses the electromagnetic waves excitated by the pd signal and the reason of a coupler built in gis inducing pd signal in terms of the electromagnetic theory and antenna theory

    主要工作有：針對gis結構及內部局部放電特點，分析了發生局部放電后信號所激發的電磁波傳輸特性，並從電磁場理論及天線理論角度分析內置傳感器的局部放電耦合原理。
  3. For high stability of the system, with the realization of hardware of the system, the second part of this paper starts from the transmission line theory, and studies the signal integrity problem of high - speed circuit system in light current. the causes of these signal integrity problems, such as signal delay, reflection, crosstalk, ground bounce noises and etc. are analyzed in theory. combined with actual design, key points of design and standard design flow of general high - speed, high - precision printed circuit board are summarized, which has been applied in actual system, and good effect has been achieved

    為使系統具有較高的穩定性，本文第二部分結合該處理器的硬體實現，從傳輸線理論出發，研究了弱電情況下高速電路印刷電路板中的信號完整性問題；從理論上分析了延遲、反射、串擾以及地彈噪聲等信號完整性問題產生的原因；結合實際設計，總結了一般高速、高精度印刷電路板的設計要點和標準設計流程，並在實際系統中獲得了應用，取得了很好的效果。
  4. But the traditional analog pfc has some insuperability shortcoming, with the development of the digital technique, more and more control algorithms canbe implemented in power electronics by the digital chips : microprocessors or digital signal processors ( dsp )

    因此功率因數校正技術（ pfc ）應運而生，成為電力電子技術領域一個新的研究熱點。然而傳統的模擬控制功率因數校正技術具有許多不可克服的缺點，如今隨著數字控制技術的不斷發展，越來越多的控制策略通過數字信號處理器（ dsp ）得以實現。
  5. 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。
  6. In order to improve the quality of the voltage signals, this paper has adopted the scheme of three phases and six organs in signal - generator part, which can eliminate the errors caused by the assembly warp and the zero shift of organs. this paper also has analyzed the distribution and varying rules of the magnetic field in the signal - generator part, then based on the conclusion of the analysis improved the structure of signal - generator, which could completely eliminate the noise signal caused by the roughness of the face on the magnetic steel ring. the improvement not only met the requirement of this study, but established the theory foundation for the super - high precision magnetic encoder in future research

    因此，為提高原始電壓信號的質量，本文採用三相六元件的信號發生方案，通過差分處理濾除了由於裝配偏差和零點漂移帶來的信號誤差;本文對編碼器信號發生結構進行了磁場分析，依據磁場分析的結論對編碼器常用的信號發生結構進行了改進，改進后的結構利用積分原理在理論上能夠完全消除信號中由磁鋼環表面粗糙度引起的信號噪聲，進一步提高了信號質量，此結構不僅滿足了本課題的需要，而且為今後研製超高精度的磁電式編碼器奠定了理論基礎。
  7. Aim at the dtc ' s blemish mentioned above and the direction of dtc technique development, the dissertation put great emphasis on the work as follows, with an eye to exalt dtc system function : ( 1 ) a new speed - flux observer of an induction motor is proposed to enhance the accuracy of flux observing, which is an adaptive closed - loop flux observer and different from the traditions. a new adaptive speed - observation - way is deduced out according to the popov ' s stability theories ; ( 2 ) to improve the performance of dtc at low speed operation, we have to exalt the accuracy of the stator flux estimation and a new way of bp neural network based on extended pidbp algorithm is given to estimate and tune the stator resistance of an induction motor to increase the accuracy of the stator flux estimation ; ( 3 ) digital signal processor is adopted to realize digital control. an device of direct torque control system is designed for experiment using tms320lf2407 chip produced by ti company ; ( 4 ) bring up a distributed direct torque control system based on sercos bus, sercos stand for serial real time communication system agreement which is most in keeping with synchronous with moderate motor control ; ( 5 ) the basic design frame of the hardware and software of the whole control system is given here and some concrete problem in the experiments is described here in detail

    針對上面提到的直接轉矩控制的缺陷和未來直接轉矩控制技術發展方向，本論文重點做了以下幾個方面的工作，目的在於提高dtc系統的綜合性能： （ 1 ）提出一種新型的速度磁鏈觀測器，新型的速度磁鏈觀測器採用自適應閉環磁鏈觀測器代替傳統的積分器從而提高磁鏈觀測的精度，並且根據popov超穩定性理論推導出轉速的新型自適應收斂律； （ 2 ）改善系統的低速運行性能，主要從提高低速時對定子磁鏈的估計精度入手，提出了一種提高定子磁鏈觀測精度的新思路? ?利用基於bp網路增廣pidbp學習演算法來實時在線地修正定子電阻參數； （ 3 ）採用數字信號處理器dsp實現系統全數字化硬體控制，結合ti公司生產的tms320lf2407晶元，設計了直接轉矩控制系統的實驗裝置； （ 4 ）提出了基於sercos總線網路化分散式的直接轉矩控制系統， sercos （ serialrealtimecommunicationsystem ）是目前最適合同步和協調控制的串列實時通信協議； （ 5 ）基本勾勒出整個控制系統的硬體和軟體設計基本框架，詳細描述一些實驗中的具體的細節問題。
  8. Digital waveform generator which use dds ( direct digital synthesize ) technology has many merits like high frequency resolution, good stability and easy to generate signal

    基於dds技術的數字波形發生器具有頻率解析度高、穩定性好、可靈活產生多種信號的優點。
  9. Thirdly, through assaying the error generated during measuring data, the result manifests : 1 ) the location installed of the transducer and the point thumped affects the experiment result to some extent. if surface - opening cracks is deeper, the location of the transducers installed and the point thumped should be further away from the location of surface - opening cracks. 2 ) when the depth of surface - opening cracks is near to 50mm, it is very difficult to measure the depth of surface - opening cracks because the depth of r _ wave conveying in concrete plates from the different small ball bringing forth exceeds 50mm. 3 ) it is clear from the experiment result, the influence is n ' t big for the diameters of small balls to measure the data while the time interval between two transducers touched firstly has very big influence on the result

    其次，對測量數據進行了誤差分析，結果表明： （ 1 ）傳感器及敲擊點的位置對實驗結果有一定的影響，當開口裂紋的深度較深時，傳感器和敲擊點的位置應該離裂紋較遠； （ 2 ）當開口裂紋深度接近50毫米時，由於實驗中所使用的小球產生的r波傳播深度均超過50毫米，故很難測量出其開口裂紋的深度； （ 3 ）實驗發現，小鋼球直徑的大小對裂紋深度的測量結果影響並不是很大，但是，波的開始上升和下降點的測量精度（即兩信號的時間延遲） ，對測量的結果有很大的影響。
  10. Dsp56f805 samples the ultrasonic pulse coming back from the target, then measures the distance and shows it on led. tms320vc5509a is accomplished the detecting speed and the main control of the radar system, is 16 fixed dsp with high performance and low power produced by ti company. dsp5509a samples the wave coming from t / r module, then measures the target ’ s speed and send this information to the assistant control chip - p89v51 based on boost c51 core mcs produced by philips company, which controls the lcd

    測距雷達系統的控制和信號處理的核心晶元是motorola公司的dsp型16位單片機56f805 ，由它對超聲波回波脈沖進行ad采樣后，計算目標距離並在七段數碼管上顯示。測速雷達系統中信號處理的核心晶元是ti公司的超低功耗、高性能的16位定點dsp ? ? tms320vc5509a ，由它對收發組件輸出的多普勒回波進行采樣，計算出目標運動速度后，送給輔助控制晶元? ?飛利浦公司生產的基於c51內核的增強型單片機p89v51 ，並且在液晶顯示器上顯示速度信息。
  11. The chaos sequence was applied in these two algorithms to increase its security and was served separately as the random watermark generator and the watermark image encryption techniques. due to the analysis of the image characteristics, we determined the watermark strength by the classification of the image content and obtained better robustness and imperceptibility. new algorithms of meaningful digital watermarking in svd domain with chaotic transform encryption are proposed

    混沌序列在這兩類演算法中分別作為隨機水印信號發生器和二值圖像水印的混沌加密手段，具有安全性高、形式簡單的優點；利用hvs特性，分別在時空域和dct頻率變換域中計算圖像內容的自適應嵌入強度，增強了演算法的穩健性；水印的嵌入和檢測計算復雜度小，演算法簡單。
  12. But, the alarm signals from scada have disadvantages as follows : ( 1 ) the open - air feeder terminal units ( ftu ) are interfered by strong electromagnetic and thunder. besides, the failure of relays and the fault of ftu can also lead to that fault information is interfered and aberrant. ( 2 ) in the process of transmission and commutation, the error in the communication equipment may result in the signals err or lose

    然而，現有的scada系統在配電網發生故障時提供給調度員的警報信息有如下局限性： （ 1 ）面向現場的戶外饋線終端ftu運行環境惡劣，承受強的電磁、雷電干擾，並且由於繼電器節點故障、 ftu元器件損壞等因素的存在，使得配電網信息受干擾、畸變的可能性較高； （ 2 ）在信號傳輸及變換過程中，通訊裝置的故障等原因，也可能導致信號出錯甚至丟失； （ 3 ）保護裝置和斷路器本身也有可能誤動或拒動。
  13. Within this scope, users can get almost any frequency clock by configuring the register, as the tune - process is nearly continual ( in fact there are many discrete frequency points ). the main circuit of the clock generator is a cppll ( charge pump pll ) designed in a method

    該時鐘發生器可以向系統提供頻率范圍是93 . 75k - 180mhz的時鐘信號，用戶可以通過配置寄存器的方法使時鐘發生器輸出自己需要的頻率，而且這一調頻過程幾乎是連續的（實際上是眾多離散點構成的線性近似） 。
  14. Programmable video signal generator

    點頻信號發生器
  15. In large rotating machinery using filmatic bearing ( turbogenerator, air compressor, etc. ) there is a potential trouble from impefect installation or running conditions, a metals " contact between rotors and shells. the trouble is usully called rubbing. the advantage of ae technologe in the rubbing diagnosis and early detection is showed. instead of classical ae characteristic parameters ( counts, amplitude, energy, duration and the other ones ) a new feature extraction by frequency analysis of ae envelop signals is discussed. both research of ae process and field experements indicate that periodic components in the envelop spectrum related to rotational speed increase evidently at the beginning of rubbing production, hence are highly sensitive to the rubbing fault diagnosis. according to the new design an acoustic emission equipment for the rubbing diagnosis named buaa ae testing system is developed and described

    汽輪發電機、空氣壓縮機等採用油膜支撐的大型轉動機械，由於安裝或運行中的原因，在轉子旋轉過程中，可能和器壁發生輕微的摩擦和碰擊，簡稱碰摩.聲發射技術在碰摩發生特別是故障早期診斷上有優越性.本系統的特點是沒有沿用傳統的計數、幅度、能量和持續時間等聲發射特性參數，而是在聲發射包絡信號的頻率分析中進行特徵提取.聲發射發生的過程分析和現場試驗都表明這種方法對碰摩檢測很敏感，在碰摩發生的起始階段，包絡譜中與轉速同步的周期性分量顯著增加.根據這種新的設計思想自行研製了buaa碰摩聲發射檢測儀並對此作了介紹
  16. His idea is based on the fact that the pivot of the soft wireless structure is to put the broad band a / d and d / a conversion near to antenna by all means, and to define the functions of the transmitter - receiver as many as possible in the forms of software ( namely realized by software ). the technology of background signal simulator puts the focus on the methods used to realize the software, namely to exploit the functions of the hardware ( for example, dsp fpga or asic ) through the idea of software design, and to produce ( realize ) wireless signals by high speed lsi and software programming

    1992年5月的全美電信系統年會上， mitre公司的資深科學家joemitola首次給出了軟體無線電的定義，他認為：軟體無線電的組成架構的中心點是將寬帶模?數（ a d ）和數?模（ d a ）轉換器盡可能地靠近天線，將盡可能多的電臺功能以軟體的形式定義（即用軟體來實現） 。背景信號模擬器所採用的技術集中體現在軟體無線電技術，即用軟體化設計去開發硬體（如dsp 、 fpga 、 asic ）功能，採用高速大規模數字集成電路、軟體編程的方法產生（實現）各種無線電信號。
  17. This contact is normally closed, if an error occurs short - circuit at supply voltage -, sensor or signal cable of force transducer max. output signal exceeded problems with supply voltage the output opens

    但如果有錯誤供電電壓短路傳感器或力傳感裝置的信號線超出最大輸出電壓或者供電電源有故障發生時，觸點的輸出打開。
  18. Our research is mainly about visual multi - channel pulse signal generator ( virtual instrument )

    本課題的主要研究重點是可視化、多通道脈沖信號發生器（虛擬儀器）的研製與開發。
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