選頻電路 的英文怎麼說

中文拼音 [xuǎnbīndiàn]
選頻電路 英文
frequency selection circuit
  • : Ⅰ動詞1. (挑選) select; choose; pick 2. (選舉) elect Ⅱ名詞(挑選出來編在一起的作品) selections; anthology
  • : Ⅰ形容詞(次數多) frequent Ⅱ副詞(屢次) frequently; repeatedly Ⅲ名詞1 [物理學] (物體每秒鐘振動...
  • : Ⅰ名詞1 (有電荷存在和電荷變化的現象) electricity 2 (電報) telegram; cable Ⅱ動詞1 (觸電) give...
  • : 1 (道路) road; way; path 2 (路程) journey; distance 3 (途徑; 門路) way; means 4 (條理) se...
  • 電路 : [訊] circuit (ckt); electric circuit; electrocircuit電路板 circuit board; 電路保持 guard of a c...
  1. In the sub block circuit design, the contents that the author had introduced include : the principle of band gap voltage reference and the design technique in low power supply ; the analysis of spike pulse noise rejection, frequency divider and dead time in oscillator and control circuit ; the selection of the width and length ratio of four switches and 2x / 1x mode change point in driver and mode selection circuits

    在子設計中,作者比較深入分析的內容有:基準的原理及低壓下基準的設計;振蕩器和控制中尖峰脈沖噪聲抑制、兩分及死區時間設定;驅動及模式中開關管的寬長比的擇及模式轉換點的設計。
  2. The canadian trade office in taipei once again is pleased to collaborate with the royal hsinchu hotel for a maple leaf food festival. this food promotion will feature a visiting canadian chef, chad maclean from edmonton, alberta. the timing of this promotion will coincide with the planned food promotion at the evergreen hotel in taichung

    加拿大亞伯達省擇北nortel wimax網解決方案建置加拿大第一個wimax商用無線寬,並稱為supernet ,其wimax無線網速率約在1 - 3mbps之間,相當cabel及xdsl連線速率。
  3. Motion controller composed of general chip series is developed and quadruple differential circuit utilizing dual monostable multivibrators with schmitt trigger inputs and dual 4 _ line to l _ line data selectors or multiplexers is put forward

    本論文研製了一種用常規晶元系列組成的運動控制器,提出了採用單穩態多諧振蕩器和數據擇器的四倍辨向
  4. Electric - controller is nubbin in developping. we are based on designing to structure of circuit, we are dead against in time and stabilization for controlling and communications, precision and rapidity for transformation etc. we have completed to select on microprocessor, clock - frequency and a / d transfer. it carry out transformation for valve position signal, and select on solid - switch ac

    在控制器的結構設計的基礎上,考慮到通訊、控制的及時、穩定、轉換的精度和速度等幾方面,主要完成對微處理器的擇、時鐘率和a d轉換器的用,閥位變送功能的實現,固態交流開關和顯示器的擇等。
  5. It designed signal amplifying circuit, frequency tricking circuit, data sampling and keeping circuit. the choice of 12 bits high accuracy a / d integrated data sampling card made program simply, high flexible and expandable. and to each error which is likely to occur in high voltage capacity type equipment during the monitoring, analysis and judgement are given

    在硬體實現上,注意擇信號傳感器;合理設計了信號放大和濾波;設計了率跟蹤,數據采樣/保持;結合軟體控制用了12位高精度的a / d轉換器,使軟體編程簡化且具有較高的靈和性和可擴展性。
  6. Through analysising the characteristics of the power system with floating neutral point deeply, the paper puts forward a new plan of single - phase to ground fault line selection on the base of s ' s signal injecton method and gives the hardware and software design. in this design, the high speed sampling and data processing is carried out through using dsp processor ; the large electrice current is drived through the application of a high - performance audio power amplifier and transformer ; the communication between host computer and detectors is realized through rs485 bus technology ; the difference multilevel frequency - selected amplifier is designed and the feeble signal of space is sampled on the base of the theory of magnetic induction ; the interface between dsp and exterior chip and rs485 interface logical is designed through using fpga ; the using of lcd module and keyboard interfacing chip makes the interface between human and machine ; the programme of host computer and detectors is designed through using blocking design method

    在本設計中,採用高速的dsp處理器,實現了對故障特徵信息的高速採集與處理;採用大功率的功放晶元與變壓器配合的方法,實現了大流信號的驅動輸出;採用485總線技術,組建了裝置主機與多探測器之間的主從式通訊網,實現了多干擾條件下裝置主機與多探測器的可靠通訊;設計了差分式多級放大,採用磁感應的方法實現了對空間微弱信號的接收;利用fpga技術,實現了控制器與多外設的介面及數字信號的串並轉換;採用了先進的lcd液晶顯示模塊及鍵盤介面晶元,設計了人機信息交互的介面;採用了模塊化的軟體設計方法,開發了裝置主機及探測器的軟體程序。
  7. Adjusting digital potentiometer in controlling circuits of sps and capacitor charging and discharging circuit separately with industry control computer ( icc ), the peak value and repeat frequency of output pulse can be adjusted separately. controlling relays to choose different capacitors with icc, the width of output pulse can be adjusted

    利用工控機分別調節開關式穩壓源控制容充放控制中的數字位器,就能分別調節輸出陡脈沖的幅值和重復率;利用工控機控制繼擇不同的充放容,就能調節輸出陡脈沖的脈寬。
  8. This paper gives a method to measure the conductivity base on choosing frequency. after adding to the electrode with two ac square waves of appropriate frequencies, we can measure the output dc voltage of the circuit

    本論文提出了一種導率測量方法,擇兩個合適率的交流方波施加於極,測出輸出直流壓,通過解方程組求出時間常數,然後求得溶液阻,進而得到溶液導率。
  9. Critical circuits in developing this board, such as tht modulation circuit, demodulation circuit, pll and filter, were analyzed in detail. parameters adopted in these circuits were also calculated. based on all that mentioned above, a rf board was implemented and related tests and experiments were successfully done as well

    本文主要對cdpd移動終端數據機的硬體開發中的關鍵部分?高部分進行了研究,論文在cdpdv1 . 1規范的基礎上,提出了射部分的實現方案,擇了合適的核心晶元,並對中的調制解調、鎖相環、濾波器等關鍵模塊進行了較為詳細的分析,對中的有關參數進行了計算。
  10. Then i finish the analysis from three aspects, instruction of circuit, stress of surrounding, and tolerance, thus providing basis of design. the following designs are in progress from four aspects, which are circuit design, thermal design, derating using and screening. at last, i make the update generator in batch process, and collect and analyze reliability dates again

    首先進行了與可靠性相關的數據收集與分析,對故障模式進行統計;然後從結構、環境應力及容差三個方面進行可靠性分析,從而為關鍵的可靠性設計提供了依據;接下來的可靠性設計,從設計、熱設計、降額使用、篩四個方面逐一解決了可靠性分析階段發現的問題;最後,我將改良的發生器批量生產,並從中重新收集了可靠性數據進行計算,事實證明改良后高無極燈的平均壽命已達到6萬小時。
  11. The paper first reviews the research background and actuality of the filter " s design in china and other country, introduces the meaning of the project and the work of the paper, narrates the theory of the switched - capacitor network and the basic switch building blocks, analyses the related factors of the design of sc filter. such as the selection of the architecture, the trade off of the opamp " s gain, bandwidth, phase margin, slew rate and setting time, the effect of the switch " s on resistor, how to reduce the charge injection and the clock feed - through, the power consumption and the selection of the sampling frequency and so on

    本文首先回顧了濾波器設計的國內外研究背景和現狀,介紹了本課題提出的意義以及本文的主要工作,論述了開關容網原理和基本開關模塊,分析了開關容濾波器設計的相關因素:結構的擇,對運算放大器設計中高增益、寬帶寬、相位裕度、轉換斜率和建立時間等的折中考慮,開關的打開阻對的影響,開關中怎樣減少荷注入和時鐘饋通,以及整個的功耗問題和采樣率的擇等。
  12. In chapter 2, the nonlinear feature of iron core of transformer in switching power supply was studied. according to the characteristics of switching power supply, the topology structure of resonant converter was selected. the characteristics of out put voltage and current vs. frequency for the three kinds of resonant converter were analyzed and compared

    在第二章中,研究了高壓開關源中高壓變壓器的非線性特性,擇了諧振變換器作為高壓大功率開關源的拓撲結構,並對三種形式的諧振變換器的壓及率特性進行了分析比較。
  13. There is difference frequency measurement requirement for every part of pid regulating, difference between dynamic quality and static quality in response time and accuracy. according to these, it use the interrupt functions and high - speed counter of the simens s7 - 200 plc cpu226 basic unit and some peripheral circuit to measure frequency ; in software designed, the procedure frame of hydraulic - turbine governor and disperse process of parallel pid are analyzed, an improved pid algorithm is adopted to realize a pid regulation mode with variable structure and parameters ; the mechanical liquid - pressure system of the hydraulic - turbine governor is with electric - hydraulic converter unit of step motor. according to the drive character of five phase of response step motor, a variable frequency regulated voltage driver unit is designed in order to realize interface between plc and driver of step motor

    本文利用s7 - 200plc自身的特點設計了率測量單元,根據pid調節各個環節的特點,以及調速器動態特性、靜態特性對率測量的實時性和精度要求的不同,利用s7 - 200plc基本單元中內置的高速計數器以及相應的外圍放大整形、分,實現了水輪發機組率的測量;在軟體上,對微機調速器的整個程序框架、並聯pid的離散化過程進行了分析,用改進的pid演算法實現了變參數、變結構的pid調節模式;調速器的機械液壓隨動系統具有步進液轉換元件,採用五相反應式步進機,根據其驅動特性設計了變調壓驅動器,實現plc與步進機驅動器之間數字介面。
  14. Firstly, the driving characteristics of high frequency power mosfet and parameter computation of drive circuit are introduced briefly. then the useful and reliable drive circuit is designed

    首先簡要介紹了高功率mosfet的驅動特點以及驅動參數的計算,然後根據實際情況擇並設計了實用可靠的驅動
  15. Chapter 3 analyzes the models of passive elements. after the analysis it has got the guide during the selection of passive elements and the same time got the guide of the layout of the inverter

    第三章里詳細的分析了無源元件的高模型,得出在高中無源元件的擇原則;得出在逆變器的布局中需要注意的一些主要問題。
  16. The molds of passive elements are analyzed in the third chapter. after the analysis it has got the guide during the selection of passive elements, and also got the guide of the layout of the inverter

    第三章里詳細的分析了無源器件的高模型,得出在高中無源器件的擇原則;得出在逆變器的布局中需要注意的一些主要問題。
  17. Application of rlc series resonant circuit in verification of spuare wave

    串聯選頻電路驗證方波付里葉分解
  18. Inductor element is great important as a part of a circuit in many frequency selective circuits and telecommunications equipments

    在許多選頻電路以及通訊設備中,感性元件在中起著重要的作用。
  19. Band selection circuit

  20. The portable instrument is the key in this system because it not only communicates with the point but also carries serial communication through rs232c. so rf401 is used to realize rfid ( radio frequency identification ) on the basis of the specialty of this system

    3 、根據該系統工作特點用rf401實現無線射,對手持巡檢儀採用無線射技術與巡檢點進行通訊,通過rs232c與pc機進行串列通訊。
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