synchronous input 中文意思是什麼

synchronous input 解釋
同步輸入
  • synchronous : adj. 同時的，同期的；【物理學】同步的。adv. -ly
  • input : n. 1. 【電學】【自動化】輸入；輸入端。2. 輸入電路，輸入信號，輸入功率[電壓]。3. 放入物，投入的資金。vt. ,vi. 把（數據等）輸入計算機。
  1. The system stores spatial data and characteristic data into central database, and provides services to users in server / client mode. as the research emphases of this thesis, several key sub - systems are designed and realized. the digital map input and maintenance subsystem performs format conversion, editing and updating of spatial data ; the rail - track video playing subsystem uses video recording as reference data, then plays, inquires and traces the corresponding frames in synchronous to the scaled mileage, realizing the query of the active picture frames ; the digital map query subsystem fulfills the map query, preview and spelling of digital map orthograph

    其中，地形圖輸入與維護實現了數字地圖的格式轉換、編輯處理以及空間數據的更新操作，解決了不同格式空間數據的互相轉換問題；線路錄象播放將線路錄像數據作為系統的一種索引數據，活動影像的畫面與里程相對應，實現了基於線路錄像的播放、查詢和檢索的功能，實現了基於活動畫面的查詢檢索功能；數字地圖子系統完成了圖形查詢、數字地圖與線路正射圖像瀏覽、圖幅拼接等功能。
  2. The subject has mainly finished designing and debugging software and hardware of a / d decode module, fpga video processing module, video data frame deposit module, base clock produce module, d / a encode module, i2c bus control module, etc. a / d decode module gathers analog tv signals and realize video decode ; fpga video processing module deals with the data after decoding and produces systematic logic control signal ; video data frame deposit module offers the buffering area to a large n umber of high - speed video data ; base clock produce module through input basic video signal offers system accurate relevant synchronous signal ; under control of video processing module d / a decode module convert digital video data into compound tv signal which can be shown in tv directly ; i2c bus control module is used to initialize the chip of system by simulating i * c bus timing

    本課題主要完成了a d解碼模塊、 fpga視頻處理模塊、視頻數據幀存模塊、基準時鐘產生模塊、 d a編碼模塊、 i ~ 2c總線控制模塊等部分軟、硬體設計及調試。其中a d解碼模塊採集模擬電視信號實現視頻解碼； fpga視頻處理模塊對解碼后的數據進行去噪處理的同時還負責系統的邏輯控制；視頻數據幀存模塊為大量高速的視頻數據提供緩沖區；基準時鐘產生模塊通過輸入基準視頻信號為系統提供精確的相關同步信號； d a編碼模塊在視頻處理模塊的控制下把數字視頻數據轉換成復合電視信號供顯示用： i ~ 2c總線控制模塊模擬i ~ 2c總線時序實現對系統中編、解碼晶元的初始化。
  3. The stability of electric power system has been being focused for a long time toprevent a power system from losing synchronism after sudden fault ， researchers have done much work and got many accomplishments this paper applied the direct feedback linearization ( dfl ) technique on the power system ， a strong nonlinear system simulation results by matlab proved this method efficiency main works and results are as follows ： this paper compared some existing methods in excitation control ， fast valve control and coordinated control respectively, analyzed the developments and actuality of nonlinear control research in brief, illustrated why ransient stability could be greatly improved by using the fast valve control in chapter 3 ， indicated the importance of coordinated control farther this paper introduced the inverse system theory, based on which ， discussed the dfl theory, pointed out which had consistency with the inverse theory, expanded the dfl theory combined the idiographic model equations ， made which adapt to the model of a single machine - infinite bus power system this paper referenced abundance articles and educed a set of equations ， which could describe the dynamical process of excitation and fast valve control for synchronous generators in the equations ， there were several very important parameters of power system - - rotor angle ( ) ， rotor speed ( ) ， generator q axis voltage ( eq ) ， transient voltage ( e ' q ) ， active power ( pe ) ， mechanical input power ( pm ) ， valve opening ( ) ， generator terminal voltage ( vt ) ， based on the model ， nonlinear coordinated controller and terminal voltage optimal controller have been designed by using the expanded dfl theory and lq optimal control theory the simulation results showed that the controller could keep power system transiently stable under the effects of a symmetrical 3 - phase short circuit fault ， which achieved better postfault regulation compared with another two routine methods ， one is the proportion excitation controller and proportion fast valve controller, the other is the proportion excitation controller and the optimal fast valve controller, which could exert good performance when met 1ittle disturbance either

    在介紹逆系統理論的基礎上，詳細介紹了dfl理論，通過比較闡明了dfl理論其本質是逆系統方法的一類，並結合具體課題推導出的模型方程將dfl理論進行了擴展，使之適應于電力系統這個強非線性對象。通過參考大量的書籍文獻推導出一套實用的可將大型汽輪發電機勵磁與汽門綜合起來進行控制的模型方程，此模型方程涵蓋了電力系統中特別引人注目的幾個量- -轉子角、轉子轉速、發電機q軸電勢eq 、暫態電勢e ' q 、有功功率pe 、機械功率pm 、汽門開度、機端電壓vt ，在此基礎上建立了實用的電力系統簡化的數學模型，並將擴展的dfl理論應用於此模型系統，結合線性二次型最優控制理論設計出大型汽輪發電機的非線性綜合控制器及機端電壓最優控制器，通過模擬實驗與採用常規的按電壓偏差進行調節的比例式勵磁控制器+汽門比例控制及採用常規的按電壓偏差進行調節的比例式勵磁調節器和基於二次型性能指標設計的最優快控汽門（考慮發電機的飽和因素）進行了對比，證實了採用此種控制器可以有效地提高電力系統的暫態穩定性，並且在電力系統遭受小干擾時同樣具有良好的調節性能。
  4. Secondly the detection precision is only related to the synchronization phase but not to the amplitude of the mainline voltage because that it uses the optimized pulses synchronous with the mainline voltage as modulation signals. thirdly it decreases the requirement of the input low pass filter and eliminates the error resulting from the direct component and even harmonics of load current. the most significant merit is that it can eliminate the effect of a few low order odd harmonics and the detecting circuit is easy to be implemented

    模擬和實驗結果表明該方法的主要優點有：不需使用乘法器進行信號調制，調制信號採用與電網電壓同步的優化特定脈沖，其檢測精度只與同步相位有關，而與電網電壓幅值無關；降低了對輸入低通濾波器的通頻帶要求，直流和偶次諧波分量對檢測精度沒有影響；突出的優點是可以消除有限個低奇次諧波對檢測結果的影響。
  5. So there are good prospects for alternating current excitation generators. in this thesis, the operation principle of aceg and the excitation control strategy based on dynamical synchronous reference frame are analyzed, the simulation models of the generator and excitation controller are established based on the saber simulator. according to the requirement of aceg, the converter should have regeneration capability, and the input and output currents of converter should be sinusoidal

    由於交流勵磁發電機既可能運行於勵磁系統向電機轉子方輸入電功率，也可能運行於勵磁系統將轉子方輸出的電功率回饋給電網，根據交流勵磁發電機系統對勵磁變頻器功率雙向流動及變頻器輸入和輸出電流諧波含量少、諧波幅值小的要求，本文提出採用輸入和輸出性能優良的矩陣式交-交變頻器作為勵磁電源。
  6. The input data of the multiplexing adopts 8 channels with the speed of 2mb / s, and those of the last two channels are " 0 " and " 1 " respectively, in order to improve the transimision effeciency and deminish the complexity of encode and electronic circuit concerned, furthermore, it makes the synchronous signal acquisition more easier

    數字復接中採用八路2m口數據輸入，其中后兩路採用直接輸入「 0 」碼或「 1 」碼的方法，提高了信息傳輸的有效性，便於提取幀同步碼，降低了編譯碼過程的復雜性，同時也降低了系統的電路復雜程度。
  7. Have synchronous control of input and output in order to avoid traction broken of cotton screen

    具有輸入、輸出的同步控制，避免棉網牽伸斷裂。
  8. For examp1e, the sort arithmetic so1ves 1eve1 partition of combination 1ogic ; the computing input waveform of sensitized path makes the possib1e of conf1rm the minimum c1ock circ1e ; the cyc1e - - based method for synchronous op tajg1fyjct7 : @ + $ { 4it x sequentia1 circuits improve the speed of waveform simu1at ion

    其中，編排級數法確定了組合邏輯的層次關系；通路敏化輸入波形方法決定了最小時鐘周期；基於周期的同步時序電路的模擬演算法加快了模擬的速度等。
  9. The third row of the table represents synchronous parallel loading of the register and states that if s1 and s0 are both high, then, without regard to the serial input, the data entered at a is at output qa, data entered at b is at qb, and so forth, following a low - to - high clock transition

    表2中第三行表示計數器的同步平行的加載，和表明如果s1和s0為高電平，那麼它就不是連續輸入，在時鐘由低向高跳變后，在a端的數據輸入則在qa端輸出，在b端的數據輸入將在qb端輸出，等等。
  10. The couplers of accelerator structures are important components of electron knear. the efficient delivery of power from rf sources to accelerator structures depends crucially on the coupler cavity. the input coupler cavity is to be well matched, that is to say, it must have proper coupiing. and it must be tuned to the synchronous frequency. in this way, we can obtain the maximum power. in the past, the decision of the coupler cavity dimensions is very difficult

    加速結構的輸入耦合腔是電子直線加速器的重要組成部分。功率從功率源輸送到加速管中，就依賴于輸入耦合腔。輸入耦合腔在整個結構中必須有良好的匹配即有恰當的耦合度，還必須工作在諧振頻率。
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