晶體變換器 的英文怎麼說

中文拼音 [jīngbiànhuàn]
晶體變換器 英文
crystal transducer
  • : Ⅰ形容詞(光亮) brilliant; glittering Ⅱ名詞1. (水晶) quartz; (rock) crystal 2. (晶體) any crystalline substance
  • : 體構詞成分。
  • : 動詞1. (給人東西同時從他那裡取得別的東西) exchange; barter; trade 2. (變換; 更換) change 3. (兌換) exchange; cash
  • : 名詞1. (器具) implement; utensil; ware 2. (器官) organ 3. (度量; 才能) capacity; talent 4. (姓氏) a surname
  • 晶體 : [晶體學] crystal; vitrella; crystal body; crystalloid; x-tal
  1. Eddy - current sensor conversion circuit consist amplification circuit, band - pass filter circuit, demodulation circuit, differentiation phase and data sampling circuit. these circuits are used to convert the test signal of eddy - current sensor to discrete signal tend to process. the microprocessor system that formed of dsp chip is used to data fitting of test system, data displaying and data communicating with personal computer, etc. the interference questions of hardware design and the measure of eliminating interference signal in the subject are introduced in the last of this chapter

    電路的設計主要分三大部分來實現:激勵源電路部分,由分頻電路和頻率合成電路組成,產生頻率穩定的激勵信號以確保檢測任務的正常進行;傳感電路部分,由放大電路、濾波電路、檢波電路、鑒相電路和數據採集電路組成,主要將電渦流傳感檢測線圈檢測到的信號成只含有被測信息的離散信號,易於后續電路處理;由dsp元構成的微處理系統,主要完成檢測系統的數據擬合、顯示及與主機通信等功能。
  2. 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,實現了對故障特徵信息的高速採集與處理;採用大功率的功放元與配合的方法,實現了大電流信號的驅動輸出;採用485總線技術,組建了裝置主機與多探測之間的主從式通訊網路,實現了多干擾條件下裝置主機與多探測的可靠通訊;設計了差分式多級選頻放大電路,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,實現了控制與多外設的介面及數字信號的串並轉;採用了先進的lcd液顯示模塊及鍵盤介面元,設計了人機信息交互的介面;採用了模塊化的軟設計方法,開發了裝置主機及探測的軟程序。
  3. At present, people usually use birefrigence and quasi - phase - matching methods to achieve higher effiency in the process of conversion. a significant advantage of quasi - phase - matching method is that the interaction is occurred through the largest element of the x ( 2 ) tensor ; the period of optical superlattice can be designed randomly, and any interaction can be matched without walk - off angle ; they are fitted to be used in frequency conversion of lower power especially. the quasi - phase - matching method has some advantages over birefrigence method, improving the efficiency of frequency conversion ; the range of frequency conversion covers its whole transperant wavelength

    由於準相位匹配技術有其獨特的優勢,可以利用非線性光學的最大二階極化張量,如ppln 、 pplt 、 ppktp用的非線性極化張量都是d _ ( 33 ) ,其有效非線性系數高出普通非線性光學介質(如bbo 、 lbo 、 ktp )一個數量級,而且可以人為靈活設計調制周期,通過周期設計其頻率范圍可以覆蓋準相位匹配介質的整個透明波段,選擇無走離效應,解決了常規pm難以解決的問題,拓寬了非線性的應用范圍,極大地提高了頻率轉效率,已成為非線性光學材料和固激光的研究熱點之一。
  4. Recently, with the development of good quality nonlinear frequency - conversion crystals and solid - state laser used as pump source, research activities in this area is heating up

    近年來,隨著高質量非線性頻率和固激光抽運源的快速發展,這一領域的研究異常活躍。
  5. These results prove that the charging action of the power supply is right. the simulation method is applied with other power supply system. at the same time, the hardware system of 2qkv - 60kw high - voltage capacitor direct current charging power supply is described in this paper, and discuss why designed a full digital phase - shifting pulse circuit

    同時,本文敘述了20kv ? 60kw高壓電容直流充電電源的硬電路的設計,其中討論了為什麼不採用已有的uc3875 、 uc3879等元來產生zvspwmdc dc的移相脈沖,設計了全數字式移相脈沖產生電路。
  6. A modern power electron power component igbt ( insulate - gate bipolar transistor ) is used as the main power switch component of power converter. it takes 80c196mc single - chip as core processor

    電源的功率開關件採用現代電力電子功率件igbt ( insulategatebipolartransistor ,絕緣柵雙極型管) ,控制系統以80c196mc單片機作為控制核心。
  7. And the steady - state coupling response time rdecreases from 0. 8s to 0. 3s. but there are almost no changes in 2peak with fields applied. ( 2 ) using the characters of two - beam coupling in sbn : 61 : cr crystals under applied fields, applications in image edge - enhancement and photorefractive edge - enhancement joint transform correlator are investigated

    ( 2 )研究了外加直流電場作用下sbn 61 cr的二波耦合特性在光學圖像邊緣增強以及光折邊緣增強聯合相關等方面的應用,討論了外電場對光折邊緣增強及光折聯合相關識別效果的影響。
  8. The tests of e - o applications by our flux ktp has been realized, the results showed : optical waveguides fabricated by using an ion - exchange process, which have an exchange - ion concentration depth profile and refractive - index profile, is close to a complementary error - function distribution, optical homogeneity and device thermal stability is much better. amplitude modulation switch formed by our flux ktp has the contrast ratio of 150 : 1 and insert loss is 2. 5 % at 1064 nm. high quality optical pulse with 1 ns width was cut successfully by using an e - o modulator from a laser pulse with 50 ns width, this modulator had run for three years, and the crystal did n ' t blackened, it showed our low conductivity flux ktp can endure high modulation voltage for a very long time

    Ktp的電光應用試驗表明:用離子交法製作的電光波導,其離子交濃度、折射率化符合餘弦誤差函數,光學均勻性以及件的溫度穩定性較好;製作的強度調制電光開關,消光比為150 : 1 ,對1064nm激光的插入損耗為2 . 5 ;製作的電光調制用於激光脈沖整形試驗,從脈沖寬度50ns的激光脈沖削出脈寬1ns的高質量光脈沖,該電光開關經過長達三年多的使用,沒有出現黑現象,說明本實驗的低電導率ktp能夠耐受長時間的調制電壓。
  9. The joint transform correlator ( jtc ) is paid more attention by researchers than the matched filtering correlator ( mfc ) with its advantages, such as high spatial bandwidth product, without integrated filtering and real - time operation etc. photorefractive crystals have some advantages, such as fast response, high spatial resolution and large storage capacity etc. we can exert both advantages by combining the photorefractive crystal with the jtc

    與匹配濾波相關相比,聯合相關具有諸多優點,如空間帶寬積高、無需濾波綜合、易於實時操作等,所以近年來更加引起人們的研究興趣。光折具有響應速度快、空間解析度高、存儲容量大等優點。將光折與聯合相關相結合構成光折聯合相關,就可以充分發揮二者的優勢。
  10. ( 5 ) we present a photorefractive two - beam coupling jtc, in which a knsbn : cu crystal is used to a square - law converter by the nonlinear energy transfer property of the photorefractive two - beam coupling

    ( 5 )利用knsbn : cu作為平方律轉件,實現實時的功率譜轉,從而實現聯合相關識別。
  11. With the strong dsp as the control unit, the design of main circuit structure is provided, and the control policy for the main circuit loop, the tuning of the triggering angle for thyristor are given

    在具的系統實現中,主迴路選擇環流控制方式,採用高性能dsp作為模糊控制核心,通過加權平均判決的模糊決策演算法對主迴路閘管的觸發角進行調制,從而有效控制輸出電壓波形。
  12. The sensing chip is connected with special amplification circuit of the transmitter by the conductor, and using piezo - resistance effect of semi - conductor silicon material to realize the transformation between pressure and electric signal

    敏感元通過導線與專用放大電路相連接。它利用半導硅材料的壓阻效應,實現壓力與電信號的轉
  13. In the first chapter, the study background. direction and main content of this paper are presented. in the second chapter, the character and application of motorola dsp chip, the system design of this power supply and a small - signal model of fbps converter are introduced. in the third chapter, the operation of fbps converter is analyzed in detail and the design of hardware is given. in the fourth chapter particular software design and program flow are given. the result and analyse of experiment are given in this chapter too. in the last chapter, summarize of full paper and works followed are given

    本文第一章介紹了課題的研究背景、方向和主要內容;第二章簡單闡述了dsp元的特點及其在電力電子領域的應用,介紹了motoroladsp元dsp56f8323的性能特點;提出基於motoroladsp控制的移相全橋軟開關dc dc的硬軟系統設計方案;最後建立移相全橋的小信號模型進行系統分析。第三章分析了系統硬部分即軟開關全橋的工作原理和工作模式;給出了詳細的硬設計。
  14. In the course of design, we fully consider the actual conditions on the railway and take a series of corresponding measures to the concrete problem. such as we select high - accuracy microconvertor and have the converted function in succession data collecting system chip aduc812, design v / f circuit and external a / d circuit. in anti - interference of the hardware, we try to disperse each function module to avoid interfering each other, adopt photoelectric isolated technology to dispel the circuit connection of input and output. in controlling we import arithmetic mean into strain wave algorithm and real computing technology of virtual value for sample treatment of data, that is using the software to smooth away interfere error and to calculate actual value, thus it makes the precision of the data improve greatly

    在設計過程中,根據系統要求,充分考慮鐵路上的實際情況,針對具問題採取了一系列的相應措施,如在件選擇方面選用高精度microconvertor系列、具有adcdma連續轉功能的數據採集微控制元aduc812 ,設計了v f電路和外部a d轉電路;在硬抗干擾方面,將每個功能模塊盡量分散獨立開來以避免相互干擾、採用光電隔離技術消除輸入輸出通道上的電路聯系;在控制方面對于采樣數據的處理引入了算術平均值濾波演算法和真有效值的計算方法,即通過使用軟來濾除系統中有干擾造成的誤差並計算真值,從而使數據的準確性得到極大地提高。
  15. 2. to implement the conversion of signal, a multi - channel time / data convert module with high precision and programmable time resolution is used. its characters and usages, including the theory and the software configuration program by using the chip sn74 | act8990, are introduced in the dissertation

    2 .為完成信號的轉,儀選用了一個多通道,高精度、具有可編程時間分辨能力的時間/數字模塊( tdc ) ,論文介紹該模塊的特點,以及在課題中的使用方法,包括實現其軟配置的元sn74act8990的原理和編程方法。
  16. The basic principle and characteristics of optical frequency conversion technology based on the photonic crystals are firstly summarized in the paper ; then, the current developments of frequency conversion of photonic crystals are also presented ; finally, its importance are pointed out in the tunable laser and other application fields

    摘要文章首先介紹了光子光學頻率技術的基本原理和技術特點;然後簡述光子光學頻率技術研究進展情況;最後指出了光子頻技術在可調諧激光和其它領域中的應用前景。
  17. We bring forward a new base - poll driving method for gigantic transistors in h - type pwm converter and by adopting pwm method, successfully complete rotate speed controlling for the walking electromotor

    提出了一種新的適合於低精度直流調速的h型pwm功率管基極驅動方式,採用pwm方式成功實現了對機人行走電機的速度控制。
  18. Changing operations on the fly ? converting, say, a calculation of a matrix of numbers to a parallel - processing computation ? requires the relatively slow rewiring of connections between large blocks of transistors, not the individual elements ( gates ) that perform a processor ' s logic operations

    若要以動態的方式改操作(例如將數字矩陣的計算轉為平行計算) ,得將大區塊電間的連結緩慢地重新接線,而非直接改處理里執行邏輯運算的個別元件(邏輯閘) 。
  19. It ' s hardware platform is current advanced adc, special or customized chips. and it employ current efficient digital signal process algorithm

    它的硬平臺是當前發展成熟的a / d件,專用或用戶配置的高速元。
  20. The most effective converter that fits for such kind of application is a well - known full - bridge three - phase vsi ( voltage source inverter ) converter with igbt ( insolated gate bipolar transistor ) modules, which can be used in wind power generation system or other general purpose utilizations such as asd ( adjustable speed drive ), active rectifiers, ac power supplies, and so forth

    最適合的就是igbt (集成門極雙極性管)三相全橋電壓源,這種拓撲結構的可以應用到風力發電系統或者其他通用的場合,比如asd (速驅動)系統、有源整流、交流電源等等。
分享友人