等速采樣 的英文怎麼說

中文拼音 [děngcǎiyàng]
等速采樣 英文
isokinetic asampling
  • : Ⅰ量詞1 (等級) class; grade; rank 2 (種; 類) kind; sort; type Ⅱ形容詞(程度或數量上相同) equa...
  • : Ⅰ形容詞(迅速; 快) fast; rapid; quick; speedy Ⅱ名詞1 (速度) speed; velocity 2 (姓氏) a surna...
  • : 采名詞(采地) feudal estate
  • : Ⅰ名詞1. (形狀) appearance; shape 2. (樣品) sample; model; pattern Ⅱ量詞(表示事物的種類) kind; type
  1. Abstract : in the research of internal combustion engine, recordingin - cylinder pressure and temperature is an essential technique to study the thermal cycle of internal combustion engine. the combustion analyzer developed in this study will give both the measurements at sampling points per crank angle or sampling cycle, calculate and show the real time parameters which decide the working process of internal combustion engine, such as pressure accelerating rate, indicateed mean effective pressure, cycle - to - cycle variation, heat release rate, etc. compared with the imported congeneric products, the analyzer has many advantages such as chinese interface, low price, easy operateing, convenience in maintainance and easy upgrading

    文摘:為了測錄內燃機缸內的壓力及溫度,開發了一種內燃機燃燒分析儀.該分析儀由國產高數據採集卡及自行開發的控制軟體組成.它不僅能精確設置每度曲軸轉角內點的個數和採集循環數,而且在採集過程中能實時計算和表徵內燃機工作過程的壓力升高率、平均指示壓力、循環變動率、放熱率參數.經實際使用以及與國外產品相比表明,此分析儀具有全中文界面、價格低、操作簡單、使用維護方便、功能便於擴充優點
  2. Such as harmonic distorted in front analog circuit, sample clock shaking, analog power and the noise in ground plane etc. some suggestion of circuit design is given to improve high - speed a / d circuit performance

    在高模數轉換電路的應用設計中地電源供電設計、模數地平面設計、時鐘設計方面提出一些具有指導性的意見。
  3. This paper starts the research of the liquid floated pendulous accelerometer testing system according to the engineering. at first, this paper gives the brief introduction of the history and present status of accelerometer and its testing technology, the working principium and math model of the liquid floated pendu - lous accelerometer, and then, decides the binary width pulse force retrim loop as the design proposal of testing system, researches the transfer function of every part in the system emphasizly, analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system, and designed the correcting net, analyses the basal problems such as resolution, sampling restraint, precision and so on, designs the hardware testing circuits such as preamplification, band - pass filter, alternating amplifier, phase sensitive demodulatorn, pulse - width modulation, frequency scale circuit, moment current generator. finally, using the graphics program language labv - iew which is designed for testing field especially by ni accomplishes the solfware design of testing system, realized the testing functions

    首先對加度計及其測試技術的發展歷史和現狀,液浮擺式加度計的工作原理和數學模型作了簡要的介紹,然後確定了以二元調寬脈沖再平衡測試迴路為設計方案,並從控制理論的角度進行了分析,著重研究了系統中各部分的傳遞函數,利用系統開環傳遞函數分析了系統的穩定性,同時設計了系統的校正網路;分析了二元調寬脈沖再平衡測試迴路的解析度、約束以及測試精度基本問題,並按照系統分析的結果設計了包括前置放大、帶通濾波、交流放大、相敏解調、脈寬調制、頻標電路以及力矩電流發生器測試系統各部分硬體電路,驗證了電路的正確性,最後按照測試系統的要求,採用了美國ni公司專為測試領域所開發的虛擬儀器工具? ? labview作為測試軟體開發工具,利用該圖形化編程語言完成了測試系統軟體部分的設計,實現了測試功能。
  4. The thesis reviews the theory which is the basis of synthetic aperture processing and introduces five algorithms of image reconstruction : the coherent addition provides a good opportunity for the real time sas ; the envelope processing can work when sonar echo returns lack phase coherence ; the i - q processing can reduce the sampling rate ; the broadband and ctfm processing are both aimed to increase the sas mapping rate

    討論了用於重構圖象的五種演算法,包括簡單的可進行實時處理的相關合成法,可以在缺乏相位信息時使用的包絡處理法,可以降低率、減少運算量、存儲量的正交處理法,可以提高聲納運行度,從而提高成象率的寬帶處理法和ctfm法五種演算法。
  5. The safety of transmission line plays a important role in power system safety it is not only the requirement of ensure supply power reliability, but also the necessary precondition of enhance power system stabilization, to remove faulty line quickly and accurately, also keep non - faulty line continuous work when some transmission line faults current differential protection is a kind of simple, reliable and good - selective protection manner to any variety of transmission lines, power system development needs current differential protection apply to transmission lines, moreover the advancement of electric and communication technology enable current differential protection apply to transmission lines firstly, the paper discusses, analyses the research and application transmission line protection in detail, compare the principle and realistic presupposition of general line pilot protections secondly, because conventional current vector differential protection are influenced easily by load current and transitional resistance, in order to at the same time quicken protection act, the principle and criterion include work characteristic of differential protect based on fault component sampled values are studied, results shows that differential protect based on fault component sampled values excels general vector current differential protection in reliability, sensitivity and anti - saturation of current transformer in addition, synchronous current sampling methods at all terminals of line is analyzed and estimated lastly, the principle and criterion. also device design about current sampling values differential protection based on optical fiber communication, which apply to short transmission lines are concretely investigated,

    基於基爾霍夫定律的電流差動保護無論對於何種形式的輸電線路都是一種簡單、可靠、選擇性強的保護形式,電力系統的發展使得電流差動保護應用於線路保護成為需要,而電子、通信技術的發展使得電流差動保護應用於輸電線路成為可能。首先,本文對目前線路保護的研究和實際應用情況進行了討論和分析,比較了常用線路縱聯保護的實現原理和實現條件及優缺點。其次,針對常規相量電流差動保護易受正常負荷電流和故障過渡電阻影響的缺點,同時為加快差動保護的動作度,對基於故障分量瞬時值電流差動保護的原理、判據、動作特性作了討論和分析,結果表明基於故障分量瞬時值電流差動保護在可靠性、靈敏度、抗電流互感器飽和方面明顯優于常規相量電流差動保護,對電流差動保護各端的同步方法和數據通信也進行了分析和評價。
  6. The reconstruction speed of fbp is fast. the image reconstructed by fbp is of high spatial resolution, but with heavy artifacts, while the image reconstructed by art is of high - density resolution and is of sligh artifacts

    變換方法以卷積反投影( fbp )方法最為常用,該演算法重建度快,成像質量較好,但是其要求完全的、間距的數據,通常重建圖像偽影較重。
  7. Abstract : it is expounded the composition and detection method of the diagnostic system of dynamic failure for locomotive running gear. also discussed are the key technologies as ultrasonic resonance demodulation, identification of locomotive type & speed, message sampling of sensors tracing running mechanism and three dimensional diagnosis, as well as the feasibility test

    文摘:闡述了機車走行部動態故障診斷系統的組成及檢測方法,介紹了超聲共振解調、車型車識別、多個傳感器跟蹤運動機械的信息、三維診斷關鍵技術及其可行性試驗情況。
  8. In this thesis, summarized the basic theories of fourier transformation and the fast fourier transformation that are generally adopted to detect and analyze the electric power harmonic in the electric power supply system. at the same time, summarized the even sample principle, the phenomenon of frequency mix, the window functions and the frequency leaking as so on, those are closely - related to sample from figure signal

    簡要闡述了電力系統諧波檢測分析所普遍採用的傅利葉變換和快傅利葉變換的基本理論以及與數字信號密切相關的均勻抽定理、頻譜混疊現象、窗函數和頻譜泄漏的基本理論。
  9. Summarized no - line loads and the present situations of the electric power harmonic pollution in the guangyuan district ' s electric power supply system ; explained the theories of fourier transformation and the fast fourier transformation those are widely adopted by majority scholars to examine and analyze the electric power harmonic in the electric power supply system. summarized the principle of even sample, the frequency mix phenomenon, the window functions and the frequency leaking as so on, those are closely - related to the figure signal

    簡要闡述了電力系統諧波檢測分析所普遍採用的傅利葉變換和快傅利葉變換的基本理論,簡要闡明了與數字信號密切相關的均勻抽定理、頻譜混疊現象、窗函數和頻譜泄漏的基本理論,同時闡述了電力系統的諧波檢測與分析的相關理論基礎知識。
  10. In computation of swept volume approximation, an improved technique to generate the swept volume approximation for arbitrary meshes is presented by introducing generator simplification and path resample using frenet moving frames along the discreted sweeping trajectory. other steps, such as a directed distance field computation on a uniform grid based on the hardware accelerated computation technique and iso - surface extraction using marching cubes algorithm, are also included in this algorithm. in addition, the simplification scheme and smoothing technique are applied to the swept volume generated from iso - surface extraction

    本文的主要貢獻在於:在掃描體逼近計算方面,在原有任意多邊形網格模型沿任意路徑運動生成掃描體逼近演算法的基礎上,提出了加入對掃描母體簡化的預處理和用活動標架對掃描路徑進行重過程,演算法的其它過程還包括:計算掃描體中幾何基元的排列,用硬體加構造無符號的有向距離場,將無符號距離場轉化為有符號距離場,從有符號有向距離場提取值面
  11. The integrated response function of nuclear logs depends not only on the response function of the instrument, but also on the logging velocity, sampling rate and recording instruments

    核測井曲線的綜合響應函數不僅取決于儀器的響應函數,而且受測量度、率,地面儀器記錄方式因素的影響。
  12. Fist, quick bit synchronization. the common methods are relative synchronization, multi - phase clock sample and so on

    第一,快比特同步。常規的方案有相關同步法和多相位時鐘
  13. This article according to the acquirement of the system parameters such as : temperature sensitivity 、 angle resolution 、 image forming time etc to design the type and diameter of the antenna ; the receiver type, integral time, rf gain, lpf gain ; the mode of calibration ; the sample frequency and program of the daq ; the scanning time, scan type, etc

    本文根據系統溫度靈敏度、角解析度、成像時間參數要求,對系統天線類型、直徑,接收機類型、積分時間、射頻增益、視頻放大器增益,定標方式,數據採集卡的頻率、編程及驅動裝置的掃描度、掃描類型進行了詳細的分析設計。
  14. We use bezier - shaped displacement reference curves to determine the new position of the vertices on the deforming surfaces. the proposed approach is fast and robust, and can support real - time interactive mesh editing and handle arbitrary meshes thanks to re - sampling and subdivision operations

    這種變形方法計算快便捷,可以方便地集成到現有曲面造型系統中,結合重新以及曲面細分技術,這種曲面造型方法可以應用在任意拓撲結構的網格曲面編浙江大學碩士學位論文摘要輯上。
  15. By using auto - adjusting boundary conditions and the method of three cubed spline curve fitting, the system software can recover both of the horizontal and vertical beam profile. the measurement system can also measure the beam landing screen error of cpt. it provides a important measurement and analysis tool to improve the performance of electron gun and dy, and improve the definition of cpt

    系統軟體中,提出了採用動態確定邊界條件,通過對離散點的三次條插值曲線的擬合恢復束斑x和y方向的輪廓,本系統既能準確客觀地描述電子束輪廓,又能夠準確快地測量電子束著屏誤差多種參數,為cpt電子槍和偏轉系統的性能改進與解析度的提高提供了有力的測試分析和研究手段。
  16. Abstract : a combined formula of the constant speed sampling flow is induced through the calibration of a flow meter, the correction of a calibrated flow and the derivation of a real flow

    文摘:通過對流量計的校準、校準流量的修正和真實流量的推導,歸納出等速采樣流量的綜合算式,並運用程序計演算法進行快、準確地計算,真正實現等速采樣
  17. A high - speed sampling system for echo signal of impulse gpr based on equivalent time sampling method is presented, and significant circuits including step sampling pulse generator and sampling gate circuit are designed

    摘要提出了一種基於效時間方法的沖擊型探地雷達回波信號高系統,設計實現了效時間的關鍵電路,包括步進脈沖發生器、門電路。
  18. Combining with the practical project, the development of an instrument for multi - channel harmonic detection and analysis were described in the third chapter, including the system structure, hardware and software of the device. then the technology of multi - channel data gathering was discussed, and some key techniques have been presented including high precision 、 high speed sampling of the voltage and current, fast flourier transform ( fft ), data compression and storage techniques, planar graphic fitting, three dimensional graphic projection, multithreading and the computer graphics techniques

    第三章結合多通道諧波監測及故障錄波一體化裝置的研製這一課題,介紹了裝置的體系結構和硬體、軟體構成,詳細介紹了在裝置研究過程中所提出的關鍵技術,主要包括電流電壓信號高精度、高技術,快傅立葉變換fft 、數據壓縮存儲技術,多線程技術,二維圖形擬合、三維圖形投影技術及海量存儲技術,計算機圖形技術
  19. The project is to develop the 100mhz wideband digital storage oscilloscope ( wdso ) , typical performance character : input signal - 3db bandwidth is 100mhz, real time sampling frequency is 20msa / s, equivalent sampling frequency is 10gsa / s, resolution is 8bits, dual signal channel, and delicacy is 5mv 5v div per channel , time sweep velocity is 2. 5ns - - 5s div 。 so the project is provided with higher performance - to - price ratio, stronger competitive capacity in market and widest applied foreground at the area of wdso

    本次課題的具體目標是實現100mhz帶寬的數字存儲示波器正機的研製,具體主要性能指標達到最高實時率20msa / s 、率10gsa / s 、被觀測信號3db模擬帶寬達100mhz 、數字解析度8bit ;雙通道,幅值靈敏度: 5mv 5v div ,掃2 . 5ns - - 5s div 。該方案具有較高的性價比,較強的市場競爭力和廣闊的應用前景。
  20. The most prominent characters of our system are, ultra - high frequency, ultra - high speed of circuit and the very complex configuration of logic circuit

    100gs / s的系統的特點是電路頻率高、度快、時序要求嚴格。
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