digital variable 中文意思是什麼
digital variable
解釋
數字變量-
The last part of the thsis presents a novel fast response digital variable optical attenuator. this device is driven by two electromagnetic driving units rather not stepper motors. a wide attenuation ( 40db ) was fully digitized and can be set by a certain number of driving pulses
論文最後針對現有數字可調光衰減器均由步進電機驅動，體積龐大，造價高昂且速度緩慢的缺點，利用微反射單元設計了一種高速數字式可調光衰減器。 -
In this paper, combined with currently voice coding technique, espically with the fabulosity development of the mixed voice coding and the increasingly utility of the digital signals processor. we investigated the voice coding technique and discussed emphasizedly the technology of variable rate voice coding technology
本文結合當前語音編碼技術尤其是混合編碼技術的驚人發展及數字信號處理器的日益實用化，研究了語音編碼技術，並重點討論了變速率語音編碼技術。論文簡要介紹語音編碼技術中的波形編碼和聲碼器的主要性能。 -
Modern control theory has arisen with the advent of high - speed digital computers and characterized by the state variable concept with emphasis on matrix algebra and with analysis and design principally in the time domain
現代控制理論是隨著高速數字計算機的出現而產生的，主要特點是使用狀態變量的概念並強調矩陣代數和主要在時間域進行分析和設計。 -
The controller includes two control loops which are outer speed loop ( variable parameter pi adjustment ) and inner current loop ( single - chop current delta - control ). in order to improve system performances, design of digital control system based on dsp is presented. the proportional parameter and integral parameter can be obtained through the design
整個系統採用變pi參數轉速調節（外環）與單斬電流滯環調節（內環）相結合的雙閉環控制方式，為了得到既快速又穩定的恆速系統，本文還給出了基於dsp的雙凸極永磁電機數字控制系統的設計方案，通過此設計方案可以得到轉速環的比例參數kp和積分參數ki的參考值。 -
Abstract : digital basinis made from digital elevation model considering spatial variability within a catchment. on the basis of digital basin, the digital approach to describing hydrological processes within a catchment is investigated. digital hydrological model is regarded as a modern physically - based modeling technique that includes a large amount of information. the case study on the shiguanhe catchment in the huaihe river basin, intensified observation field of gewex asian monsoon experiment project, has shown that the digital mode lperforms very well not only in simulating runoff processes at any specific site, but also in simulating spatial distribution and temporal variation of hydrological elements and state variable ( especially soil moisture ), if compared with traditional hydrological models. that provides solid foundation for full use of now available observation in formation and in - depth mining of hydrological data
文摘:考慮流域下墊面空間變異性，基於數字高程模型構建了數字流域，並在此基礎上對描述流域水文物理過程的數字方法進行了探討.文章認為，數字水文模型是一種有物理基礎的包含大容量信息的現代模擬技術.史灌河流域實例研究表明，數字水文模型可以十分方便地輸出水文要素和狀態變量的空間分佈與時間序列，這對充分利用現有觀測信息進行水文信息的深層挖掘創造了條件 -
The paper particularly discusses the archive digitalization sub - system in which the archives are input by its classification. accordingly, the universal scanner input system and digital camera multithreads collecting system are developed to fix the variable classifications
文中詳細討論了檔案數字化系統，將檔案分類進行錄入，並根據不同類型的檔案設計了相應的掃描儀和數碼相機的多線程錄入系統。 -
Voice encoders may be further enhanced by encoding digital signals at variable encoding rates
語音編碼器可以通過在可變編碼率編碼數字信號進一步加強。 -
It is based on the platform of hardware of fpga, dsp, d / a to realize the concise and full - function digital variable bit rate test signal resource. this paper discuss the ways of full digital if and realize it, certainly the ways to realize the carrier frequency, sub - carrier frequency and variable bit rates with dds technology is also presented
本課題是以fpga 、 dsp 、 d / a為硬體平臺，設計實現了結構簡明，功能完整的全數字可變速率測試信號源，討論並實現了中頻頻段如何實現全數字的方法以及用dds技術實現載波頻率，副載波頻率，碼速率的方法。 -
The docucolor igen3 digital production press offers capabilities that complement traditional offset presses : short print runs, quick job turnarounds and variable information printing. in addition, it offers print quality as well as the look and feel equivalent to those from traditional offset printing - all on a wide range of paper stock. lower production cost
配備docucolor igen3 ，作業便可按需列印，並即時生產隨時隨地完全滿足需求確保信息更新，削減不必要的成本，諸如倉儲庫存稅以及陳舊存貨的處置費等。 -
This paper presents the upgrade and modification design of the sl - 3000 model digital - controlled logging system, which consists of two important modules - communication control module and acoustic wave vdl ( variable density logging ) module. the working principle of these two modules, hardware architecture, circuit design and the implementation of the pci interface are also expatiated
本文介紹了sl - 3000型數控測井系統中兩個重要的模塊? ?通信控制模塊和聲波vdl模塊的升級改造設計，具體闡述了這兩個模塊的工作原理、硬體構成、電路設計以及pci介面的實現。 -
Then we uses the scheme that has the variable gain based on the kalman filtering model realize two steps phase - locks ring circuit track technology, this kind has the advantage that when changed the gain the digital phase - lock link to be allowed simultaneously to realize the fast capture and the reliable track, the simulation analyzes its capture performance
模擬結果表明，自編碼直擴通信系統的編碼捕獲性能具有可行性。採用基於卡爾曼濾波模型實現具有可變增益的二階鎖相環路的跟蹤技術，這種具有時變增益的數字鎖相環可以同時實現快速捕獲和可靠跟蹤，其捕獲性能要比傳統數字鎖相環改善很多。 -
Parallel structure of poly - phase decomposition and parallel mixer is applied in the ddc circuit, it solves the bottleneck in mixing and increases the handle speed. the partition of the tuning channel according to the digital mixing sequence, and the ddc by means of decimating first, the low - pass filtering and mixing realize efficiently the down - conversion of the variable carrier frequency band - pass signal. according to the structure of the ddc and the requirement of the frequency
短數據快速測頻演算法的具體實現:使用并行流水線的設計方法，提高了系統的數據吞吐率，在100mhz的系統時鐘下，能夠實時處理400mhz ~ 600mhz速率a / d采樣的數據，在64點采樣， 100mhz系統時鐘情況下，初次測頻佔用時間640ns ，以後每次測頻佔用時間縮短到160ns ，實時地提供多相濾波下變頻所需的載頻位置信息，縮短了接收機的調諧時間。 -
The paper introduces the design of digital variable - frequency induction motor speed modulation control systems, based on fpga
本文提出了一種採用現場可編程門陣列（ fpga ）器件實現數字化變頻調速控制系統的設計方案。 -
Filter poly - phase decomposition method is adopted in this dissertation. the partition of the tuning channel according to the digital mixing sequence, and the digital down - conversion by means of decimating first, the low - pass filtering and mixing realize efficiently the down - conversion of the variable carrier frequency band - pass signal
本文採用濾波器多相分解方法，按數字混頻序列劃分調諧通道，使用先抽取，后低通濾波，再混頻的數字下變頻結構，高效實現了變載頻帶通信號數字下變頻。 -
Prototype of the symmetrical typical voltage space - vector of open - loop variable frequency speed system is designed by using the tms320f240 digital controller and the ipm ( intelligent power model ), with which had a exam on the motor and the experimental results are also given. from the results we can conclude that the results are according with the theory analysis
利用ipm智能功率模塊，設計了採用基於tms320f240數字控制器的對稱空間電壓矢量的開環變頻調速系統的原理樣機，對電機進行了空載實驗，給出了它們的實驗結果，實驗結果和理論分析相一致。 -
Though the rational fractions based on one - variable ( vector valued ) continued fractions have been used in other engineering fields, its application in the field of digital image processing has n ' t yet been reported in the literature so far. 2
基於一元（向量）連分式形式的有理分式已應用於其它工程領域，但基於矩形網格和三角網格上的混合有理插值在數字圖像處理領域目前還沒看到這方面的報道。 -
Based on the series of problems of the practical beam unit dragging system, an excellent energy conservation method is proposed in this paper, i. e. the slip frequency is kept constant in variable frequency system. and a digital spwm generator is adopted to put this control method into practice
針對實際游梁式抽油機拖動系統存在的一系列問題，提出了一種優良的節能方案? ?轉差頻率恆定的變頻調速系統，並用一種數字式spwm發生器來實現該控制方案。 -
With the fast development of computer technology and the specialization trend of 3d gis, it is necessary and realizable to building a visible, digital, informational and intelligentized system with the three - dimensional visualization foundation, only in which variable of data and information can be fed back to users in time, dynamic and straight
隨著計算機技術的快速發展以及三維地理信息系統的部門化的發展趨勢，構建一個可視化、數字化、信息化、智能化的水利領域三維可視化系統不僅是必要的而且是可行的，要實現這樣一個系統，三維可視化是基礎，只有在可視化的環境中才能將各種數據和信息及時、動態、直觀地反饋給用戶。 -
Vda variable digital amplifier
可變數字式濾波器 -
The digital variable frequency sspeed regulation system based on dsp
的全數字交流調速系統
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