頻率校正 的英文怎麼說

中文拼音 [bīnlǜjiàozhēng]
頻率校正 英文
frequency compensation
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 校 : 校名詞1. （學校） school 2. （校官） field officer3. （姓氏） a surname
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 頻率 : frequency; rate
  • 校正 : check; correction; adjust; revise; proofread and correct; rectify; calibrate; make true; master c...
  1. Due to existing signal processing technology ’ s shortage such aslow measurement, narrow measurement range precision and other poor performance, we introduced a high - precise signal processing technology : firstly, to get power spectrum with hanning windowed welch modified periodogram, search its peak value frequency ; secondly, to apply zooming analysis via goertzel algorithm ; at last, to get a highly precise doppler frequency with energy centrobaric rectifying algorithm 。 the simulating result indicated that this technology introduced could get accurate doppler frequency 。 depending on above discussed technology, we designed a signal processing scheme, and developed a signal processing system. the running result showed high performance, verified the feasibility and reliability of the highly precise signal processing technology introduced. in a word, the technology improved ldv ’ s performance such as measurement precision, measurement range, dynamic response time 。 and it will have a wide application foreground

    針對存在的缺點，本文提出了一種應用於激光多普勒測速的高精度信號處理技術，即首先利用加hanning窗的welch修正周期圖演算法得到信號功率譜，搜索其譜峰值頻率，接著利用goertzel頻譜細化演算法對搜索的譜峰進行細化分析，再引入能量重心頻譜校正演算法對細化后的譜峰進行校正分析，從而將離散頻譜分析演算法、頻譜細化演算法和頻譜校正演算法三者有機結合起來，充分發揮各自的優點:通過加hanning窗的welch修正周期圖演算法快速得到功率譜及峰值頻率，通過goertzel演算法獲得分析頻帶的高解析度頻譜，然後通過能量重心校正演算法對細化后的頻譜進行高精度校正，這樣不僅保證了演算法的高效性，而且大大提高了分析的精度。
  2. On the part of the design of nine - component thrust vector stand, an automatic hydraulic pressure original position calibration system, a scheme of original position calibration, and the great rigidity universal flexible combinatorial underprop are designed. by using the scheme of “ universal flexible combinatorial underprop plus software digital filter ”, the inherent frequency of test stand is improved, and the problem of test stand libration is solved. then, the resolving method of the disturbance between underprops of the moveable frame is proposed, and the disturbance revise equation is deduced

    在推力矢量試車臺設計方面，設計了自動液壓原位校準系統、原位校準方案以及大剛度萬向柔性組合支撐;採用「萬向柔性組合支撐+軟體數字濾波」的方案，提高了試車臺動架的固有頻率，解決了試車臺動架的振動問題;提出了動架約束互擾問題的解決方法，推導了互擾修正方程;研究了九分力推力矢量測量誤差分析方法，並計算了推力矢量測量精度。
  3. Study shows that the basic principles of three existed methods for phase difference correction on discrete spectrum are identical, by which the twice fft analysis through time - domain shifting time series or changing window ' s length is performed, and the spectrum by making use of the phase difference of two corresponding peak lines are finally corrected

    在研究時域平移的離散頻譜相位差校正方法和改變窗長離散頻譜相位差校正方法的基礎上，發現這幾種離散頻譜相位差校正法的基本原理是一致的，就是通過時移和加不同的對稱窗進行兩次fft分析，並利用離散頻譜對應峰值譜線的相位差以求得頻率和相位校正量。
  4. Frequency correction burst fcb

    頻率校正突發
  5. The basic calibration of a rf signal generator normally includes tests on output level accuracy, level flatness, and frequency accuracy

    射頻信號發生器的基本校正工作一般包括測試輸出電平準確度、電平不平坦度及頻率準確度。
  6. The laboratory offers calibration service for watchesstop watches with internal crystal and step motor. the calibration of watchesstop watches includes the measurement of its relative frequency accuracy

    計時表本所為石英及機械表提供校正服務，包括測量計時表內部頻率的準確度。
  7. The calibration of a spectrum analyser normally includes checks on frequency accuracy, level flatness, level linearity, input attenuation and calibration reference output

    頻譜分析器的校正工作一般包括檢查頻率準確度、功率電平不平坦度、標度線性、輸入衰減及參考輸出值的校正。
  8. Correction of frequency characteristic

    頻率特性校正
  9. The studying results show that the advanced spectral estimation is more predominant than dft algorithm and its corrected algorithms in the field of inter - harmonics measuring, especially for the inter - harmonics which is too close to harmonics. hence, it is effective and feasible to introduce the advanced spectral estimation into inter - harmonics measuring

    上述研究證明，在間諧波檢測領域，特別是對離諧波頻率較近的間諧波檢測中，現代譜估計理論有著許多dft演算法及其校正演算法不可比擬的優勢，將其引入電力系統間諧波檢測中是有效可行的。
  10. The calibration will also include measurement of output frequency

    校正工作包括量度輸出電壓的頻率。
  11. The clues and techniques to improve the resolution of data processing are 1 ) removing the affection of near surface factors on data acquisition, including static correction and noise eliminating technique etc, 2 ) broadening the frequency band of pre - stack seismic data, including amplitude compensation and pre - stack deconvolution etc, 3 ) improving s / n ratio of high frequency and weak reflection signals through multiple coverage with high precision velocity analysis, residual static correction and high - order nmo, raising " dead line of high frequency reflection ", and 4 ) identifying post stack effective reflection frequency band, enhancing dominant frequency and so on

    主要包括：消除近地表因素對資料採集的影響，包括靜校正和噪音壓制技術等；疊前拓寬地震資料領帶，包括振幅補償和疊前反褶積技術等；藉助高精度速度分析、剩餘靜校正和高次項nmo技術，通過多次覆蓋疊加，消除資料中隨機噪聲干擾、提高資料信噪比，尤其是高頻端反射信息的信噪比，改善高頻反射和弱反射信號信噪比，提高「高頻反射死亡線」 ；疊後有限反射頗帶識別、抬高優勢頻率等。
  12. This paper presents a method of improving on frame & horizontal synchronization in laser phototypesetter, by using singal - chip computer system to detect real - time frequency deviation and adjust film transmission speed

    摘要提出了一種在激光照排機電控系統中，利用單晶片微機對轉鏡掃描光柵頻率信號的暫態波動量進行檢測、提取，並以此實時校正系統輸片速度，實現場掃描對行掃描的跟蹤、補償，從而提高行、場掃描同步精度的方案。
  13. In this paper, a " step - by - step " recursive 3 - d frequency - space wed scheme is presented to deal with real data

    本文採用三維頻率空間域有限差分波場延拓運算元以「逐步累加」的方式實現了三維波動方程基準面校正，並對實際數據進行了處理。
  14. Calibration of a wattmeter at rated voltage with 5 different current settings on one current range ( at one frequency and one power factor )

    按額定電壓，校正一個電流量程上有五個不同電流值的功率表（一個頻率及一個功率因數） 。
  15. Concerning the problem of the frequency instability, slight but not negligible, in electric power system, this paper discusses the resultant error in measurement in detail and develops an error - correction interpolated algorithm in frequency domain. taking advantage of the high calculating speed of pc, the measurement error in frequency, amplitude, and phase are well eliminated

    本文針對電網頻率輕微但不可忽視的不穩定造成的測量誤差問題進行了詳細的討論，形成了一套在頻域實現誤差校正的方法?插值演算法，並利用pc機高速的數據處理能力軟體校正了各次諧波的頻率、幅值及相位。
  16. The design of force feedback loop is emphasized on the base of theory analysis. then proportional - integral controller and lag - lead compensator are designed to improve dynamic performance of this kind of gyro. the main work includes optimizing parameters and system simulation

    用matlab分析了陀螺本體傳遞函數的波德圖，然後通過採用比例-積分控制和遲后-超前校正及參數優化、系統模擬，使陀螺系統的固有頻率得到顯著提高。
  17. Because the synthetic seismic record and the seismic record data got in the surface are not well matching caused by the dispersion of seismic wave, frequent correction between them must be done before use. under control of well logging data, there are two important methods to get wave impedance from seismic data inversion : wave impedance inversion method based on convolution model and wave impedance inversion method based on wave equation. using seismic data attributes can predict the information of logs

    測井資料和地震資料是地震勘探中兩種最重要的資料，由於地震波的頻散，使合成地震記錄與地面地震記錄不能完全匹配，因此使用之前必須對二者進行頻率校正地震資料在測井資料約束下可以進行反演，以求取地下波阻抗，主要有兩種方法：基於褶積模型的波阻抗反演方法和基於波動方程的波阻抗反演方法可以用多屬性變換由地震資料預測測井信息。
  18. Inductive voltage dividers ( ivd s ) will be calibrated by comparison with the laboratory s 8 - dial ivd, normally at specific frequencies of 400 hz, 1 khz and 10 khz with an input test voltage of 25 v. the calibration normally involve measurement of voltage ratio ( magnitude ) of the output voltage related to the input voltage of the ivd

    感應分壓器一般按400hz 、 1khz及10khz等指定頻率及25v的輸入測試電壓，透過與本所的八刻盤感應分壓器對比而進行校正。校正工作一般包括測量該感應分壓器輸入電壓與相對輸出電壓的電壓比（幅值） 。
  19. For the amplitude - frequency response at the self - oscillation frequency is one, a method to calculate the dynamic accuracy and the index of the servo system is provided, by comparing them, the scheme to design the verifying unit is presented

    利用伺服系統在自振蕩頻率點的幅頻特性為1這一特點，將輸入信號頻率、幅值、系統的自振蕩狀態和系統的參數聯系起來，構建了伺服系統動態精度的計算公式和指標估算經驗公式，並根據兩者的關系提出動態精度校正方案。
  20. Measurement times and schedules may be changed based on engineering judgment with regard to gage use frequency, calibration interval, repair times, environment etc

    測量時間和周期可以根據工程判斷或量具的使用頻率，校正周期，維修時間，環境等調整。
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