擬雙晶 的英文怎麼說
中文拼音 [nǐshuāngjīng]
擬雙晶
英文
mimetic twining-
The enhancement of process, the feature size of device becomes smaller, and the deductions of the power supply require the art of design should be consummated. this article firstly makes a detailed analysis and expatiation for the operational principle and design technique of switched - capacitors - filter. then realize the filter design in biquadratic method and z - domain synthesis
本文在對開關電容濾波器的工作原理及設計方法進行了系統的闡述和分析的基礎上,分別用雙二階方法和z域合成法實現了適用於dtmf信號的開關電容濾波器的設計,並用無錫華晶0 . 6 mcmos工藝( csmc60 )進行了模擬。In the section 3, we calculated the threshold and efficiency of double resonance oscillator ( dro ) in plane wave of clbo ; we also got the efficiency curves of clbo in gaussian beam
第三章分析和數值模擬計算了平面波雙諧振情況下clbo晶體的振蕩閾值和轉換效率曲線,同時給出了高斯光束的轉換效率曲線並與bbo晶體進行了比較。In order to make the sensitivity of 2 - demension accelerometer along the two main arbors almost identical, symmetric four - beam structure that embeds a double - sides interdigitated differential capacitive with puckered beam in two directions was used as sensitive component. in addition, the differential capacitive accelerometer fabricated by bulky silicon micromechanical technique has high sensitivity, wide measurement scope, less nonlinear error, and simple converting circuit. then, the structure parameters of the sensitive component were calculated and stimulated, which results in a set of the optimized structure design parameters, main fabrication procedure and several key fabrication technology
為使二維振動傳感器在兩主軸方向的靈敏度大致相同,敏感元件採用高度對稱的四梁結構,其中每個軸向上均採用帶折疊梁的雙側叉指電容結構,採用體硅微機械工藝製作的高深寬比叉指電容式敏感元件,具有高靈敏度、寬量程、非線性誤差小、外圍電路簡單等優點;對設計的敏感元件結構參數進行了計算,並利用有限元法進行了模擬分析,根據模擬結果得出了優化參數;在確定敏感結構的基礎上,研究了敏感元件採用體硅微機械加工工藝製作的工藝流程和關鍵工藝技術;對敏感晶元內部的c - v介面電路進行了原理設計與分析,利用差動測量技術得到由振動引起的微小電容變化量,經c - v介面電路進行相位調制處理,然後通過解調輸出與加速度成正比的電壓信號。At the receiving end, a inverse process is performed. the system receives low rate data and the fpga reorganizes a frame of data which is decoded by the compression chip every 20 ms. the obtained pcm signal is performed d / a to restore the analog speech signal
在收端進行相反的過程,接收低碼率數據,並由fpga重新組幀,送至主晶元解碼得到pcm信號,再作d / a變換,恢復出模擬語音,系統是全雙工的。Simulation result shows that nearly 100 % breakdown voltage of the plane junction can be realized
模擬結果顯示,該結構可以使射頻功率雙極性晶體管的擊穿電壓幾乎100 %達到平行平面結的理想值。Abstract : a vertical sandwich deep trench with a field limiting ring is proposed to improve the breakdown voltage of power devices and high voltage devices. simulation result shows that nearly 100 breakdown voltage of the plane junction can be realized
文摘:提出一種二氧化硅/多晶硅/二氧化硅夾心深槽場限制環新結構來提高晶體管的擊穿電壓.模擬結果顯示,該結構可以使射頻功率雙極性晶體管的擊穿電壓幾乎100達到平行平面結的理想值The design of high - voltage circuit based on pwm technology is briefly described. the closed - loop current control theory using analog instruments is fully discussed, followed which is that using digital instruments. it is an important part that the hardware and software design of the single chip - two arms and two chips - two arms current control circuits with a new chip applicable to digital current control system
簡單介紹了基於開關電源技術的高壓電路設計;詳細講述了模擬穩流電源的閉環穩流原理,並在此基礎上討論了利用數字電路實現穩流的原理及可能性;選擇出適合數字穩流系統的新型晶元,完成了單片雙路穩流系統、雙片雙路穩流系統的軟硬體設計;給出了一種簡單易實現的比例?積分控製程序。In this thesis, by simulating the director alignment, using the characteristics of optical transmission, taking jones matrix we calculate the transmittance of the lcd. by theoretically studying to compensating - film from different aspects, single film and double films, we get that the double - film - compensation has nice compensating effect, especially put the two films in the two sides of lc layer
本文通過模擬液晶盒中指向矢的排列,利用偏振光在其中傳播的特性,採用瓊斯矢量方法計算出光學透過率;通過對不同情況下補償膜(單層、雙層)理論上的研究,得出雙膜補償具有良好的補償效果,尤其是將兩層膜分別放在液晶層兩側。In chapter 3, the mechanism, static and dynamic characters of the piezoresistive accelerometer with the double thin plates - mass. and the simulation of ansys was used for the optimal design of this sensor and obtained the parameters of the structure
第三章詳細論述了具有雙薄板梁島結構的壓阻式加速度傳感器晶元的工作原理、分析了器件的靜態、動態特性,用ansys模擬並進行了優化設計,在此基礎上確定了傳感器的結構參數。Hence, the requirements of the servo control card are getting much sophisticated. in this thesis, the research work and implementation details of a 6 axes servo control card are discussed. this card is based on the ti company ? dsp chip tms320f240 and has realized the following functions : a ) signal encoder, b ) position limit, c ) dual ram communication with cpu, d ) coordinated control e ) dia conversion
該卡以ti公司的16位定點數字信號處理器tms320f240為核心晶元,實現6路編碼器信號輸入處理,軸限位中斷處理,通過雙埠ram與pc進行通訊,接收pc發送過來的控制指令和數據,完成插補運算、聯動運算等控制,通過d / a轉換電路,將結果轉化為模擬電壓送伺服放大器驅動電機。Moreover, video control program to implement internal function of fpga is designed including video capture time sequence control, ping - pang frame buffer read and write time sequence control and lcd display time sequence control, and program ' s simulation and analysis is also provided. at last, this paper presents a portable iv ' s video processing system, and proposes three buffer strategy to control capture buffer. and a moving object detection algorithm of combing an adaptive background subtraction technique with a three - frame differencing is adopted
設計了基於fpga系統結構的車載視頻顯示電路板;利用單片機io口模擬i2c時序,實現了視頻解碼晶元控制;利用fpga實現視頻控制,研究了採集通道時序控制、雙幀存ram讀寫時序控制及lcd顯示時序控制的方法,並進行了軟體模擬和分析;設計了車載視頻檢測系統方案,給出了管理採集緩沖區的三幀緩沖策略,採用綜合三幀差分和自適應背景相減的演算法實現運動檢測,連通體檢測去除虛目標,模擬實驗證明其有效性,同時分析了該演算法在dsp視頻檢測系統中的簡單實現方法。In the dissertation , we discribe the implementation of large capability video data acquisition system based on pci bus of computer 。 the system is composed of data acquisiton card and corresponding software 。 the data acquisiton card include two acquisition channels , 8 - bit digitization at rates up to 13. 5mhz 。 frist , the architecture of the video data acqusition system is studied 。 then , the function and implementation methode of each module are introduced in detail 。 the control module of the video data acqusition card is implemented by using of the isp technology of cpld and vhdl programming technology 。 the a / d converter used assembler to implement the initialazation programe 。 and the double buffer technology is used for large capability data acqusition. because a contiously large memory is difficult to apply in windows operating system 。 finally we use broland c + + to introduced the devleoping procedure of drivers 。
在實際的研製過程中,利用cpld的在系統可編程( isp )技術和基於vhdl語言的可編程邏輯器件設計技術實現了視頻數據採集卡的控制模塊。在視頻的a / d轉換模塊,用匯編程序模擬i2c總線對初始化a / d轉換晶元。針對大容量數據採集,採用了雙緩沖技術解決wndows操作系統下難以申請到大容童連續內存的間題。This paper realized frequency modulation using the video signal to directly control the resonance loop ' s diode of the vco at the early stages, and then through using radio frequency bipolar junction transistor, designed a lc voltage controlled oscillator which was emulated by advance design system. in addition, it also implemented the design and debugged the hardware circuit
本文第一次實驗採用視頻信號直接控制vco諧振迴路變容二極體的方式實現頻率調制,並且利用射頻雙極性晶體管( bjt )設計了一種lc壓控振蕩器,通過ads軟體進行了參數模擬,最後進行了硬體電路的製作和調試。The main chip of the usb interface circuit is a cypress semiconductor ' s product, cy7c64613, which has intergrated usb sie ( serial interface engine ) and enhanced 8051. the oscilloscope module is realized according to the real time sampling principle. it has two signal chunnels and a dual 8 - bit dual a / d converter whose most sampling rate is 40msps, so two signal acquisition can occurs in the same time
隨后介紹虛擬儀器測試平臺中各硬體模塊設計實現: usb介面的主晶元是cypress公司的cy7c64613 ,此晶元集成了usbsie和8051核;示波器模塊根據實時取樣原理實現,採用雙8位a / d轉換器,提供兩條信號通道,可以同時採集雙路信號,最高的采樣率為40mhz ;信號源模塊採用直接數字合成( dds )原理實現,它所能產生的信號頻率為10hz 5mhz ,最小頻率解析度為9 . 537hz 。We article reviewed craftwork characteristic of growth yvo4 crystal by means of czochralski - cz. according to method of fimty - difference, we compiled field quantity estimate program ( fqep ) with vc + + that we can numerical simulate temperate - field and velocity - field while yvo4 dual - refractive optics crystal is growing
本文對丘克拉斯基( czochralskicz )法生長yvo _ 4晶體的工藝特點進行了評述,根據有限差分的方法,用vc + +語言編寫了場量計算程序,對yvo _ 4雙折射光學晶體生長過程中的溫度場和速度場進行了數值模擬。Chapter one introduces the recent development of usb2. 0 and the overall architecture of transceiver interface ; chapter two proposes the design flow and design style ; chapter three presents the whole system and module partition ; chapter four emphasizes on the dual - mode transmitter circuit, and gives out the simulation waveforms ; chapter five focuses on the design of over - sampling receiver and dll ( delay locked loop ) module ; chapter six designs the band - gap reference circuit. in the end, it concludes the design, and estimates the trend of usb. the dissertation is emphasized on dual - mode transmitter architecture, implementation of high speed dll using dba ( digital - based analog ) technology and a new design methodology for complex digital modules in mixed - signal circuit
本文第一章介紹了usb2 . 0的發展現狀和收發器介面晶元系統;第二章介紹了該晶元的設計流程和風格;第三章介紹了該介面晶元的總體構架以及模塊劃分;第四章著重介紹雙模發送器電路設計並給出了模擬驗證波形;接下來第五章分析了過采樣接收器的設計並對其中的dll ( delaylockedloop )模塊設計進行了詳細的分析;第六章介紹了本晶元內置的基準電壓源的設計;最後對本文的設計一個總的回顧和總結,並展望下一代usb的發展方向。Some usual measurement methods are introduced, and their advantages and disadvantages are also analyzed in detail. in view of the defects of the usual methods and the latest developments in bi - photon effect, an all - fiber - measurement system for ultra short pulse was designed in this work, based on the knowledge of nonlinear fiber optics, application of passive optic apparatus, optic - electric transformation, analog circuit, micro chip unit ( mcu ) and so on
針對常用方法的不足,結合近些年來雙光子效應的研究成果,我們採用雙光子探測器取代常用的非線性晶體,並首次利用光纖延遲取代空間光路延遲,綜合了非線性光纖光學、光無源器件的應用、光電轉換、模擬電路、單片機等知識,設計出了一套全光纖超短脈沖測量系統。分享友人