速率變換 的英文怎麼說

中文拼音 [sùlǜbiànhuàn]
速率變換 英文
speed conversion
  • 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...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 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
  • 速率 : speed; rate; tempo
  1. According to the system technology require, adopting singlechip realize open loop digital control of hdclsm ; using v / f conversion and complex key - control method realize digital setting of system parameter, such as velocity ; using micro - stepping control insure the motor running more smoothly ; adopting debasing speed control method to eliminate the mechanical impact of distance termination effectively ; at the same time, analyzing main power circuits drive circuit and protect circuit of system, completing hardware design and facture and software programming and debugging ; at last, making a whole test in hybrid rotary step motor. the experiment result indicates that this control system reaches the qualities required and run smoothly also

    根據系統技術要求，採用單片機實現了混合式直流直線步進電動機的開環數字控制；利用v f變換和復合鍵控方法實現了系統轉速等參數的數字設定；利用細分控制技術保證了電機運行的平穩性，並進行了波形分析和理論研究；採用單片機軟體降速控制策略解決直線步進電機行程末端的機械沖擊問題；同時對主功率電路、驅動電路和系統保護電路進行了分析，完成了硬體設計、製作和軟體編程、調試，最後在混合式旋轉步進電動機上進行了全面測試。
  2. In all kinds of complicated network, oriented linking and unlinking, communication frequency resource is strained, and bandwith to transmitting audio frequency signal is too restricted, complicated and fluky, while audio frequency data exponential have been increased in the last several years. under the circumstances, based on the research of predecessor, this paper studies wavelet analysis ' s maths gist and practices significance on signal process, and puts forward a optimized wavelet package condensation arithmetic to process audio frequency data, which gives attention to coding efficiency, multirate and compression delay. simulation experiment on the arithmetic has been done by matlab

    針對無連接和面向連接的各種復雜網路環境下，通信頻帶資源緊張，音頻傳輸帶寬有限且復雜多變，而各種音頻數據又日益增多的局面，本文研究小波分析在信號處理方面的數學依據和在數據壓縮方面的實際意義，在前人不斷工作的基礎上，提出了一種優化小波包變換編碼方案用於音頻數據的壓縮演算法，兼考慮了編碼效率、多碼率和壓縮時延多個方面，並在matlab環境下做了模擬實驗，對各種音頻信號及多種小波函數做了模擬結果比較，實驗結果證明該演算法可以在一定計算復雜度下可以很好地改進壓縮效果，達到多碼率下實現實時編解碼的過程，在高速dsp晶元等硬體設備支持下，可以有效應用於實際復雜多變信源編碼。
  3. The specific research methods are listed : 1. matched filter taking the max ouput snr as the best rule correlates nonstop divided signal and divided echo to detect low snr target signal. then all one dimension divided correlation outs and done fft in portrait to leach interferential signal such as static or low rate mussy meaves, many pathway echo and so on and to take target ' s time difference and doppler frequency that combine parameters that target ' s direction taken from antenna and so on to implement target ' s orientation and tracking

    具體研究方法如下： 1 、採用以輸出信噪比最大為準則的最佳匹配濾波器來對分段的參考和目標信號作相關處理來檢測低信噪比目標信號，然後對一維分段相關輸出組作縱向傅立葉變換來濾除靜態或低速的雜波、多徑回波等干擾信號，並提取目標的時差和多普勒頻率，再結合由天線獲得的目標方向等參數，就可以實現目標的定位和跟蹤。
  4. Because of the presence of the first - order sea echoes with dominant amplitude, the doppler resolution technique which based on the range - velocity transformation is needed to extract the targets information in hf radar

    高頻雷達工作在擁擠的短波波段，由於絕對占優的一階海浪回波的存在，必須採用基於距離?速度譜變換的多普勒頻率分辨技術來處理雜波，以提取目標信息。
  5. 2. machine will auto stop when the shute or weft opens, or weaving is done. it has higher output, quality than four shuttle circular looms. 3. controlled main equipment speed with frequency converter

    主機變頻調速，改善起動性能，縮短定機時間，減少疵布率，節約電能和方便速度變換
  6. With the development of power electronics technology and devices in recent years, instead of using the industrial frequency transformer to boost voltage, dc / dc high frequency converter achieves the function. the system has higher power density and conversion efficiency, and the size, weight, ac noise of which has been greatly reduced

    近年來，隨著電力電子技術與器件的迅速發展，使用dc dc高頻變換技術代替工頻升壓，系統具有較高的功率密度與轉換效率，裝置體積、重量與交流噪聲大大減小。
  7. 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變換晶體和固體激光器抽運源的快速發展，這一領域的研究異常活躍。
  8. Semiconductor power convectors - adjustable speed electric drive systems - general requirements - part 1 : rating specifications, particularly for d. c. motor drives

    半導體功率變換器.速度可調式電力驅動系統.一般要求.第1部分:直流電動機專用額定值規范
  9. The other is supported by emerson network power co., ltd as an advanced research project. and this paper mainly introduces how to design and realize a four - quadrant running srd system to control a 3kw srm ( 8 / 6 poles ) based on a dsp ( tms320f240 ), which uses h - bridge power convertor and power - consumption braking method

    本文基於省重點科研項目「開關磁阻電機新型控制及其調速系統」和深圳emerosn網路能源公司預研部項目，分析討論了如何設計實現一套以3kw的四相（ 8 6極） srm為控制對象以dsp為控制核心採用h橋式功率變換器和能耗制動方式的四象限運行srd系統。
  10. As a new kind of motor, switched reluctance motor ( srm ) has a doubly salient structure, and its windings are only mounted on the stators. these characteristics bring srm lots of virtues : solid structure, high reliability and efficiency, good fault - tolerance, low cost etc. switched reluctance driver ( srd ) combined srm with modern power electronic technology and control technology

    開關磁阻電機（ srm ）作為調速電動機的新品種，採用定、轉子雙凸極鐵心結構，並且只在定子上裝有集中繞組，轉子上無繞組或永磁體，具有結構簡單堅固、運行可靠、效率高、功率變換簡單、容錯性好和成本低等優點。
  11. With the development of power electrical technology and power element product technics, vscf generating system has better foreground and more broad scope of development. and power inverter, which has important effect on the whole generating system, is the core of vscf generating system

    在交直交型變速恆頻電源系統中，功率變換器將直流電轉變為恆頻恆壓交流電為飛機用電設備供電，其工作狀況直接關繫到整個變速恆頻電源的系統性能，因此是變速恆頻電源系統的核心組成部分。
  12. As the key role of vehicle revolution, the electrical motorcycle drive system has many shortcomings such as low energy efficiency, short running distance within once charge, etc. i n this paper, based on studying the traditional bi - directional energy converters of dc drives, a novel energy saved electrical motorcycle ac drive is presented

    環境保護和能源問題是二十一世紀「綠色革命」的兩大主題，電動車作為汽車「綠色革命」的主角，存在著能量使用率低、一次充電行駛里程短等問題。本文通過研究直流調速系統雙向功率變換電路，提出一種zczvsboost雙向dc dc變換器與vvvf變頻調速器相結合，驅動鼠籠型異步電機的節能型電動車交流驅動系統。
  13. Sampling frequencies conversion is a very important part in digital if

    在數字中頻處理過程中速率變換是很重要的一個環節。
  14. The filter design is the key of sampling frequencies conversion system

    濾波器設計對于速率變換系統來說是至關重要的一個環節。
  15. Speed change lane

    速率變換車道
  16. This thesis analyze different cases where the sampling rate ratio is integer, rational, and irrational, in which the emphases is the irrational case

    本文對于速率變換的整數倍、分數倍和無理數倍不同情況進行了詳細的分析，其中無理數倍的速率變換是本文研究的重點。
  17. Chapter three is our main block and work, it summarized the high speed physical layer extension ( ieee 802. lib ) standards, explained in details the complementary code keying ( cck ) modulation and demodulation techniques, and then explained and developed the fast walsh transform ( fwt ) that has been used to increase the data rates of these protocols

    第三章是論文的主要組成部分，也是本研究工作的重點。這一章總結了高速物理層標準增強版（ 1eee802 11b ） ，並詳細介紹了互補碼鍵控（ cck ）調制解調技術，描述並改進了用於提高數據速率的快速walsh變換（ fwt ） 。
  18. In fact, multi - rate processing is corresponding to sampling rate conversion

    多速率處理本質上就是采樣率變換的實現問題。
  19. In the experiment of temperature adjustment, the process control by changing power is adopted which makes the speed of regulating increased greatly, and the influence of time for power changing on the speediness and stability of temperature adjustment is obtained by analysis

    在溫差調節實驗中採用變換供電功率的過程式控制制方式使得調節速度得到較大提高，並分析了在這種過程式控制制方式下功率變換的時間對溫差調節快速性及穩定性的影響。
  20. Moreover, based on poly - phase signal processing and interpolation, a timing variable cic ( cascaded - integrator - comb ) filter based method for sampling rate conversion is analyzed

    另外，結合多速率多相信號處理和nco內插控制思想，分析了時變cic內插濾波器的采樣率變換實現。
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