直接同步方式 的英文怎麼說

中文拼音 [zhíjiētóngbùfāngshì]
直接同步方式 英文
direct sync mode
  • 直 : Ⅰ形容詞1 （成直線的; 硬挺的） straight; stiff 2 （跟地面垂直的; 從上到下的; 從前到后的） erect; v...
  • 接 : Ⅰ動詞1 （靠近;接觸） come into contact with; come close to 2 （連接; 使連接） connect; join; put ...
  • 步 : Ⅰ名詞1 （步度; 腳步） pace; step 2 （階段） stage; step 3 （地步; 境地） condition; situation; st...
  • 方 : Ⅰ名詞1 （方形; 方體） square 2 [數學] （乘方） involution; power 3 （方向） direction 4 （方面） ...
  • 式 : 名詞1 （樣式） type; style 2 （格式） pattern; form 3 （儀式; 典禮） ceremony; ritual 4 （自然科...
  • 直接 : direct; immediate
  • 方式 : way; fashion; pattern
  1. In allusion to the working characteristics and technical difficulties of 155mb / s burst mode receiver, we have put forward to the quick synchronization of inpouring phase locked loops ( pll ). for receiving burst signal, we introduce the scheme of dc coupling and dynamic threshold decision

    針對155mb s突發式收發模塊的工作特點和技術難點，我們提出了注入鎖相環法的快速同步技術；對于突發式信號的接收，我們採用了直流耦合和動態閾值判決的技術方案。
  2. In this paper, research on the algorithm of complete digital if and baseband transmission system and the realization of transmitter and receiver. / 4 - dqpsk is chosen as digital modulation scheme. the scheme of demodulation is baseband differential detection. sliding correlator can realize the symbol synchronous acquisition ; early - late gate synchronizer is used to do symbol synchronous tracking

    系統的發射機選定/ 4 - dqpsk為調制方式，接收機採用基帶差分解調的非相干解調方式，滑動相關器捕獲發送的pn序列，早遲門同步器跟蹤符號同步，使用相關器對同步后的符號進行最佳判決，並在這些演算法實現的基礎上，實現了直接序列擴頻和解擴技術。
  3. The subject of this thesis is to study ironless moving coil linear permanent magnet synchronous motor and the major works in this thesis are summarized as follows : 1 ) two analytical formulas are derived by concentrated current method and distributed current method to determine the magnetic field due to pm, based on the current model of pm. besides, two method ( magnetic charge method and solution by laplace equation method ) are also introduced with comparing their advantages and disadvantages. then the effects of the motor parameters on the flux distribution are discussed

    本文對空芯動圈式直線同步電動機進行了深入細致的研究，內容包括： （ 1 ）採用電流模型推導出兩種計算永磁磁極二維氣隙磁場的解析公式（集中電流法、分佈電流法） ，同時介紹了兩種永磁電機氣隙磁場計算方法（磁荷法，直接求解拉氏方程法） ，分析各種方法的優缺點，討論電機參數對氣隙磁密的影響； （ 2 ）介紹了單層同心繞組的布置方式，根據安培定律推導出空芯動圈式直線永磁同步電動機的靜推力計算公式，分析靜態力?位移特性； （ 3 ）建立空芯動圈式直線永磁同步電動機動態模擬模型，模擬不同驅動方式下電動機起動、穩態運行時電磁力、速度、位移的變化情況。
  4. Efficient to lose fat, adopt micro - computer technology to make the vibration strongly effect on the abdomen, which part with most fat of the body. inner - desighed strong motor effect on the organism directly. unique auto change direction mode, makes the full dimension vibration of the organism

    迴旋塑身腰帶運用微電腦技術，將強效振動裝置直接作用於脂肪最為集中的腹背部，內置的強有力的電動機直接作用於肌體，產品獨有的大幅度的水平移動自動變換方向運動模式，使肌體大范圍全方位共振，同時加快身體血液循環，微電腦控製程序可自動逐步增強產品運動力度，使用過程中自動轉換運動方向。
  5. The main contents of the study as follows : ( 1 ) an introduction to the space vector theory and its application on the modeling of pmsm is presented firstly, which shows the basic idea of pmsm dtc. a comparison of dtc in asynchronous machine and pmsm is made as well. in order to take the full advantage of the dtc, the pmsm has to be properly selected

    本文的主要內容包括： （ 1 ）由空間矢量模型推導出永磁同步電機的磁鏈、電壓和轉矩的公式，描述了永磁同步電機轉矩直接控制的基本控制機理，分析了永磁同步電機與感應電機在轉矩直接控制方式上的不同之處以及轉矩直接控制對永磁同步電機的要求。
  6. 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。
  7. For comparing the intensity of 9 institutional factors, i use gradual return methord, put these institutional factor variables into the same equation, and have drawn the following conclusion : formally restricted legal institutional arrangement is most intensity among three variables, secondly it is the institutional arrangement of enterprises operation expenses. finally, on the basis of analyzing factor influence degree of the institution, i have put forward the policy recommendations on the location choice to the fdi of our country to the

    為了比較這9種制度安排對中國對外直接投資區位選擇的影響程度強弱，我們還運用了從一般到特殊的逐步回歸方法，把9個制度因素變量放入同一方程進行回歸，得出了如下結論:在三類變量中起作用最強的是正式約束的法律制度安排，其次是影響企業運行費用的制度安排，最後是經濟制度安排。
  8. ( 3 ) there are many flaws in direct laser metal sintering, such as the high remnants stress, micro - hole and micro - crack in sintering parts. in order to solving those problems, the programming of scanning paths is put forward, and several parts are prepared with different scanning paths respectively. the following conclusion is educed : the parts produced with short - side scanning path and same scanning direction have the minimum structure, the rigidity of parts prepared by short - side and same direction scanning path is highest, and the density of parts produced with the vertical scanning path is maximal

    （ 3 ）針對採用大功率激光直接燒結鎳基高溫合金成形金屬零件存在的問題，如較大的殘余應力，製件中存在著微裂紋、微孔洞等缺陷，初步提出掃描路徑的規劃，並採用幾種不同的掃描方式進行燒結試驗，發現採用短邊掃描路徑和同向掃描能夠獲得更加細小和分佈均勻的組織結構，採用短邊同向路徑制備的試樣其顯微硬度最高，而採用變向掃描（垂直）路徑制備的試樣緻密性最好。
  9. There are different ways to make the bit synchronization, for example : the technique of the pilot frequency, the technique of some change about the baseband signal

    為了保證在同步傳輸系統中的位同步，有導頻及對基帶信號信號直接變換的方式，直接變換的方式中，使用線路編碼是比較常見的。
  10. For the image acquisition of optical scan mode, normally, ccd image sensor is used to capture image, but in our system, due to the system request of micromation and high integration, cmos image sensor is adopted as the image collection device, and then the thesis gives a interface circuit between the chip and dsp and a control solution of image collection ; toward the information storage in our solution, dsp is directly linked to usb host chip and it is the dsp that accomplishes the processing of usb protocol and interface control so as to reduce the cost, minimize product cubage and consequently meet the requirement of system micromation ; at the same time, the thesis probes preliminarily into usb otg ( on - the - go ) technology, which offers an approach between embedded machines including pda, mobile phone, printer, digital camera and so on ; in addition, some attempts on the other application area with tms320vc5402 which was commonly used to voice processing and static image processing are done, for example, to arrange the chip to control lcd module directly

    在圖像的光電掃描輸入上，傳統方案大部分採用ccd型圖像傳感器，而在本方案中，根據系統微型化、高集成的特點，使用了cmos圖像傳感器作為攝像器件，並且設計了該晶元與dsp的一種介面電路以及圖像採集控制方案；在信息存儲上，本方案採用dsp直接與usbhost晶元連接，由dsp處理usb協議和介面信息，從而降低了系統成本、縮小了產品體積，滿足了系統微型化的要求；同時本論文也對usb - otg技術進行了初步探討，利用此項技術，不再需要計算機作為主機，就能實現在pda 、移動電話、印表機、數碼相機等嵌入式應用之間直接互聯通信；另外也對廣泛用於語音處理和靜態圖像處理的tms320vc5402其它方面的應用進行了嘗試，比如直接控制液晶顯示器等。
  11. Few research refers to the dtc in electrical magnet synchronous motor ( emsm ). this paper analyses the characteristic of dtc in this kind of motor and simulates the scheme of this motor without the damper winding

    在永磁同步電機直接轉矩控制的研究基礎上，本文對電磁式同步電機直接轉矩控制理論和方案進行了初步模擬研究。
  12. There are advanced strategy. they will be discussed in this thesis. the main contents of the study include : pmsm operational principle, the basic idea of pmsm dtc, the basic idea of pmsm vector control, t a set of pmsm strategy and the simulation platform are presented ; the simulation result proves that this set of strategy is effective based on the two strategy. ; in the last we developed, and successfully implemented the hardware and software design of pmsm based on dsp

    本文的主要內容包括：永磁同步電機基本理論，轉矩直接控制的原理與應用策略，矢量控制的原理以及控制策略，並採用matlab模擬軟體對這兩種控制方式分別進行運行模擬及相應性能方面的研究；構建了能適用兩種高性能控制方式的永磁同步電機實驗樣機系統，編制了相應控制軟體，初步實現了能應用轉矩直接控制和矢量控制的永磁同步電機系統研究。
  13. Therefore the effect of the motor parameters is analyzed taking the control principle into account. ( 2 ) based on the basic analysis of the pmsm dtc principle, the function and the realization of the sub - modules of pmsm dtc are discussed. a set of pmsm dtc strategy and the simulation platform are presented ; the simulation result proves that this set of strategy is effective in the theory

    （ 2 ）在對永磁同步電機運行機理的分析基礎之上，討論了永磁同步電機轉矩直接控制系統中各個控制子模塊的功能和具體的實現方式，提出了一套永磁同步電機轉矩直接控制的具體實施方案，並根據這套方案建立了基於simulink （ matlab ）的永磁同步電機轉矩直接控制模擬模型，對所出的控制方案進行了模擬分析。
  14. After that, a modified direct torque control ( dtc ) scheme is discussed, to overcome the control difficulties come with the characteristic of low armature inductance

    隨后，又針對電磁式無刷交流同步電機電樞電感小的特點，分析討論了改進型的直接轉矩控制方案，以克服由此造成的一系列控制上的困難。
  15. Comparing with the other time - series pattern finding algorithm, this one has a few of innovations. firstly, improving time - series pattern finding algorithm from the classified accuracy. secondly, ignoring some aberrance of time - series pattern by the high - order neural network

    同其他的時序模式發現演算法相比較，具有幾點創新： 1 ）從分類精度的角度來改善時序模式發現演算法； 2 ）通過高階神經網路，直接利用網路的特性忽略了時序模式的某些畸變； 3 ）利用了分層方法，進一步改善分類精度。
  16. The actual use and theory analysis indicate that labwindows / cvi development kit can enhance perfectly system real time measurement and control abilities ; detailed data formats can be transformed easily target database by mfc odbc ; real _ time main memory database directly accessing main memory is a perfect scheme to meet the real time requirement ; priority levels and data view that are designed on system characteristics, can solve primely the problem of time sequence consistency ; ntp can basically meet system time synchronization requirement

    理論分析和編程實現結果表明labwindows cvi作為測試控制軟體開發工具對系統實時測試、控制性能有很大的提高； mfcodbc能極其方便地實現對具體的數據格式進行數據轉換；以內存直接尋址方式的實時內存數據庫是解決系統實時性的理想方案；針對系統特點而設計的優先級和數據視圖能很好的解決系統時序一致性問題； ntp協議軟體同步演算法基本滿足系統同步精度要求。
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