模數轉換速度 的英文怎麼說

中文拼音 [móshǔzhuǎnhuànsùdù]
模數轉換速度 英文
analog-to-digital conversion rate
  • 模 : 模名詞1. （模子） mould; pattern; matrix 2. （姓氏） a surname
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 轉 : 轉構詞成分。
  • 換 : 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
  • 速 : Ⅰ形容詞（迅速; 快） fast; rapid; quick; speedy Ⅱ名詞1 （速度） speed; velocity 2 （姓氏） a surna...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 模數 : [物理學] modulus; module; modulo; mod
  • 轉換 : change; transform; convert; switch
  • 速度 : 1. [物理學] velocity; speed; blast; bat 2. [音樂] tempo3. （快慢的程度） speed; rate; pace; tempo
  1. In the hardware design, the paper completes modules ’ design like outside memory, patulous a / d, patulous d / a, rs232 communication, ecan communication, led control, keyboard control, distant control, emulation, reset, logic voltage switch, dsp supply power regulate and ac - dc power circuit, as well as room layout design like anterior panel, back panel etc. and dsp transfers data with peripheral equipments except outside memory using serial ports. besides, the whole circuit is configured in interrupt response. thus, it can meet system demand as well as take full advantage of tms320f2812 ’ s hardware resource. in the software design, the paper finishs programs like the interface programms intercommunicates with people, the distant control program, ad and da modules ’ control program, in addition, the paper select the velocity and acceleration state - feedback algorithm and is written in the program. the software design uses dsp integrate exploiting environment named ccs2. 2 of ti inc. as software instrument, and programs with the combination of c language and assembly language. moreover, in order to maintenance or modify the software expediently and shorten software ’ s exploitation time, the design adopt software modularization technique. finally, some air cylinder experiments are carried out to proved that the pneumatic controller is very practical

    在硬體設計中，本文完成了片外存儲器擴展、 a / d擴展、 d / a擴展、 rs232通信介面、 ecan通信總線介面、液晶顯示控制、鍵盤控制、遠程控制、模擬、復位、邏輯電平轉換、 dsp工作電源校正電路和ac - dc電源等模塊設計以及控制器前面板、後面板等的空間布局設計。其中dsp與除外部存儲器的外圍設備之間的數據傳送全部採用串口通信，同時系統電路配置成中斷響應方式，這樣既滿足了系統要求，又充分利用了tms320f2812的硬體資源。在軟體設計中，本文完成了人機界面功能模塊、遠程控制模塊、 ad擴展模塊、 da擴展模塊、速度和加速度狀態反饋的控制演算法的程序設計。
  2. According to the characters of the vibration of internal combustion engine and on bases of the theory of active vibrantion control which is carefully analyzed, the corresponding mathematical model suitable for the vibration of internal combustion engine is developed and the fuzzy control techniques are adopted. a new active vibration control system is developed w hich conclude mcu, the key part, and the equipment used to survey the vibrative acceleration of internal combustion engine

    本文根據內燃機振動的具體特點，在仔細分析了振動主動控制原理的基礎上，建立了適合內燃機整機振動的數學模型和採用了模糊控制方法，提出了一種新的內燃機整機振動主動控制減振系統，該系統以微控制器為核心，配以測加速度和控制機電轉換執行機構組成。
  3. Driven by the requirements of an analog - to - digital converter ( adc ) with excellent performances, adcs have been made a rapid progress towards high speed, high resolution and low power dissipation

    為了適應各個應用領域對模數（ a / d ）轉換器越來越高的要求， a / d轉換器朝著高解析度、高速和低功耗等方向快速發展。
  4. A data acquisition system with the following features is realized : ? transmission rate up to 100kbyte / s over usb ; ? system ' s dynamic range as high as 120 db ; ? multi - kind of trigger mode control ; ? sampling rate as high as 100 ksps ; ? 12 - bit a / d conversion accuracy ; ? 32k bytes on - board data memory ; ? the system, which was made up of large - scale electronic chips, is small, light and portable, and suitable for field use

    本設計最終實現了一個瞬態信號數據採集系統，它具有以下特點： ?採用usb介面進行高速數據傳輸，傳輸速度達100kbyte / s ； ?採用浮點a / d轉換技術，動態范圍達120db ； ?多種采樣觸發控制方式； ?最高采樣率100ksps ； ? 12位采樣精度： ? 32kb數據緩存； ?使用新型大規模電子器件，系統結構緊湊，重量輕，適合野外作業。
  5. At first we improve the methods of iris image preprocessing, including an efficient arithmetic of evaluation iris images, an improving method of locating iris, calibrating iris image by the translation of coordinate and the circular shift of code, a eatimate of the background illumination by bicubic spline, and the image enhancement by the dual tree complex wavelet transform. next we designed the recognition arithmetic based on the location of the local maxima of the wavelet transform modulus. in the thesis lots of simulation are performed by means of matlab and visual c + +

    首先改進了虹膜預處理方法，實現了一種快速高效的虹膜質量評價演算法;設計了一種改進的兩步虹膜定位演算法，準確的定位了虹膜的內外邊界;利用坐標轉換和編碼的循環移位實現了對虹膜圖像的配準;利用雙三次樣條函數擬合虹膜圖像背景，去除了非均勻光照對虹膜識別的影響;使用二分樹復數小波方法增強了虹膜圖像的對比度;在識別演算法方面，本文設計了一種「基於小波模極值點位置的虹膜識別演算法」 。
  6. There are five parts are as follows : in part one, the concept of switching function is introduced first to establish the nonlinear mathematical model of the induction motor variable frequency speed adjustment system which is fed by a sine pulse width modulated ( spwm ) inverter and takes the effect of the main magnetic circuit saturation into consideration, then the low frequency oscillation of the system is simulated according to the model. next, from the view point of energy conversion of the inverter - induction system, a criterion for the low frequency oscillation is proposed to determine whether the system is in low frequency oscillation which is judged by whether the interval of the negative current component of the inverter input current is more than 1 / fc ( fc is the carrier wave frequency of the inverter ) or not

    首先引入開關函數概念，建立了正弦脈寬調制（ spwm ）逆變器供電異步電動機，考慮主磁路飽和時的變頻調速系統整體數學模型，模擬系統的低頻振蕩；其次從逆變器-異步電動機系統能量轉換角度出發，提出通過檢測逆變器輸入電流中負電流的間隔時間是否大於1 / f _ c （ f _ c為逆變器載波頻率）來判定系統是否出現低頻振蕩；最後的實驗結果驗證了系統低頻振蕩建模和判據的實用性和正確性。
  7. These converters exploiting the enhanced speed and circuit density of modern vlsi technologies, have been widely used for high resolution a / d conversion

    這類模/數轉換器可充分利用現代vlsi的高速、高集成度的優點，已成為實現高精度模/數轉換的主要技術。
  8. When we gather data, we often fell the gathering speed is slow, the precision of a / d transition is bad and other problem, based on the gathering theory, this dissertation put forward relevant resolving project

    對于數據採集與轉換中遇到的采樣速度、孔徑誤差、模數轉換精度等問題，本文根據采樣定理的理論，提出了不同的解決方案。
  9. The dissertation discusses about field multi - channel nuclear data collecting system based on mcu in detail. the data collecting system adopts mcu ( micro - control units ) at89c55 as controlling core, applying high speed and low power adcs ( analog - to - digital converters ) cmos chip max 191 and 320x240 matrix graphic lcd ( liquid crystal display )

    該系統在硬體上以單片機at89c55為控制核心，以高速低功耗的a d晶元max191作為多道脈沖幅度分析器的模數轉換器件，以320 240點陣圖形液晶顯示屏作為系統的顯示器，根據初步的性能測試，系統已經達到預期的設計目標。
  10. Comparing with conventional nyquist converters, - converters greatly release the requirements for high performance of analog circuit and precisely matched components. additionally, these converters exploit the enhanced speed, circuit density and low cost of modern vlsi technologies. currentlly, - adcs have been widely used for audio a / d conversion

    - adc採用過采樣噪聲整形技術實現高精度模數轉換，和傳統的nyquist率模數轉換器相比，避免了對模擬電路性能指標和元器件匹配精度的較高要求，並可充分利用現代vlsi的高速、高集成度、低成本的優點，已成為音頻模數轉換的主要技術。
  11. Advanced fpga technology is introduced to improve the integration of digital circuits, and all digital circuits in the original module are integrated in the fpga chips, which could not only reduce the cost, but also improve the reliability and measurement precision of the circuits. high speed digital signal processor ( dsp ) is selected as the coprocessor instead of scm ; it can receive all kinds of commands sent from vxi, analyze and execute the commands, harmonize each section of the module and process the data. higher - conversion - speed comparator chip is adopted to convert the input signals being measured into square waveform signals which could be identified by fpga chip ; it can expand the measurement range of frequency dramatically

    本文在原有vxi總線四通道計數器模塊的設計基礎上，通過對原模塊缺陷的分析，採用一些新的技術和新的電子器件來重新設計該計數器模塊:採用最新的fpga技術來提高數字電路的集成度，將原模塊中的所有數字電路全部集成在fpga晶元中，這樣不僅能節約成本，還能提高電路的可靠性和測量精度;採用高速的數字信號處理器（ dsp ）取代原有的單片機作為協處理器，來接收vxi發來的各種命令，分析命令、執行命令、協調模塊各部分的工作以及對數據的處理;採用轉換速率更高的比較器晶元將輸入的被測信號轉換為fpga晶元能夠識別的方波信號，能極大提高測量頻率的范圍;採用d / a轉換晶元和隔離運算放大器得到隔離通道所需的比較電平，該比較電平值能夠根據實際需求進行設置，能增強模塊的使用靈活性。
  12. First designs the high precision reading system of accelerators in the kernel of adc & fpga

    首先設計了以高解析度模數轉換器adc和fpga為核心的高精度加速度計數字讀出電路。
  13. Limited by adc chip ’ s manufacturing processing, it is hard for a single adc chip to acquire the high sampling rate and high precision at the same time. the method of parallel times - interleaved sampling adc system is effective to solve this problem

    受模數轉換晶元發展水平的限制，單片adc晶元很難同時滿足高速高精度的要求，多片adc并行交替采樣技術是突破採集系統這一瓶頸的有效方法之一。
  14. The detector is a silicon photoelectric diode array s4111 - 35q made in japan. the difference from the former data acquisition is choosing a 16 - bit adc module based on usb bus. this module reduces the complexity of programming and operating

    數據採集部分與以往高溫計設計上最大的不同是選擇基於usb總線的16位a / d轉換數據採集模塊，具有速度快、編程簡便、即插即用等優點，簡化了編程以及操作的復雜性，同時省去了下位機與上位機的數據傳輸。
  15. The task of realtime display on lcd and the complicated control arithmetic are implemented in this smps system, and a microcontroller with high resolution, high speed, high integration, large memory is necessary. in this paper, the design theory of s / h ware module which forms the smps control module and the design scheme is discussed in detail. in this system, the digital compute - control module is implemented with samsung ’ s high resolution, high integration, arm core microcontroller s3c44b0 and ad converter with 16bit resolution produced by ad company, ad7705. the ad7705 implements the data acquisition of the voltage and current feedback signal, and transfer the data to microcontroller through spi bus, which is implemented with s3c44b0 ’ s gpio, for computation and display

    本開關電源系統不僅完成lcd的實時顯示，還要完成復雜控制演算法，需要高速度、高精度、高集成度、大存儲空間的微控制器的支持。本文詳細的論述了構成電源控制模塊的各個軟硬體模塊的設計原理和設計方案。本系統提出了以samsung公司的高速度、高集成度的基於arm架構的微控制器s3c44b0與ad公司具有16位解析度的模數轉換器ad7705晶元構成數字採集運算控制模塊。
  16. The complete air - cooled control system has been realized by at89c52 microprocessor and icl7109 the integral adc which has high counter - interference capability. the main circuit uses non - contract solid module and has the characteristics of high speed switching off and avoiding contract burned to stop blower fan

    該系統採用at89c52微處理器及抗干擾能力強的積分型模數轉換器件icl7109實現數據的採集及處理，實現了完整的風冷控制系統功能；主迴路採用無觸點固體模塊，具有關斷速度快、避免觸點燒壞、導致風機停運的特點。
  17. The auto - test process could be done by several instructions " executed. results of the ip core ' s simulation shows the adc can achieve a 10 - bit resolution. system has 8 input channel and 5 sample period selection with the control of internal bus

    對該ip核的全局模擬結果表明，所設計的模數轉換器可以達到10位的精度，可以通過系統總線信號對8路信號輸入通道以及5種采樣速率進行選擇控制，可以通過系統指令完成模數轉換器的自測試功能。
  18. Novel method for improving the speed of pipelined a d converters

    一種提高流水線模數轉換器速度的方法
  19. The main contents are as follows : firstly, two typical architectures of ultrahigh speed adc are presented. moreover, the block diagram design of a 6 - bit 1gsample / s ( gsps ) adc is described. in the meantime, the building blocks and key ideas to improve the sampling rate are also described

    首先，基於兩種典型的超高速a / d轉換器的特點，提出了一個解析度為6位，采樣速度可達到1gsps的模數轉換器系統結構，並對構成系統的各電路模塊及提高速度的關鍵技術進行了研究。
  20. 3 ) a 16 - bits high speed a / d conversion device was used, it quicken a / d conversion speed ten times

    3 ）採用16位高速a d轉換器完成模數轉換，使模數轉換速度提高了10倍。
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