測時誤差 的英文怎麼說

中文拼音 [cèshíwùchā]
測時誤差 英文
time determination error
  • 測 : 動詞1. （測量） survey; fathom; measure 2. （測度; 推測） conjecture; infer
  • 時 : shí］Ⅰ名1 （比較長的一段時間）time; times; days:當時at that time; in those days; 古時 ancient tim...
  • 誤 : Ⅰ名詞（錯誤） mistake; error Ⅱ動詞1 （弄錯） mistake; misunderstand 2 （耽誤） miss 3 （使受損害...
  • 差 : 差Ⅰ名詞1 （不相同; 不相合） difference; dissimilarity 2 （差錯） mistake 3 [數學] （差數） differ...
  • 測時 : time study測時分辨力 time measuring resolution; 測時計 time meter; holologe; chronometer; 測時術 ...
  • 誤差 : error
  1. In this thesis, firstly, we put forward a new algorithm of the synchronization of carrier reference phase, that is to use the curve synthesizing with the general digital carrier phase looper to have an estimation on carrier frequency within 10 ms so as to meet the need of meteor burst communication. we have done some simulations to get the performance of carrier frequency estimation using two modulation modes ( 16qam and 4 - qpsk ), and had some test on the carrier phase looper in conditions when using different baud rate transmission and when the baud tuning have windage

    我們對兩種正交調制方式（ 16qam和4 - qpsk ）進行了模擬工作並給出了模擬結果，同時討論了碼元同步定時誤差對鎖相環路工作的影響並根據流星通信中使用變速率傳輸時鎖相環路的載波同步性能進行了測試；然後在基於軟體無線電思想的數字處理平臺（該數字處理平臺實現了中頻數字化）上用dsp軟體完成了載波的相位跟蹤。
  2. Aiming at the calibration of traffic radar, this paper analyzed shortcomings of conventional calibration method which be used in radar speed gun calibration regulations ( jjg528 - 2004 ) and put forward two new methods to verify it and developed speed standard instrument

    摘要針對公路交通中雷達測速儀的檢定問題，分析了《雷達測速儀檢定規程》 （ jjg528 - 2004 ）中規定的檢定方法的不足之處，提出了兩種新的雷達測速儀檢定方案測試數據記錄比對法和測試數據實時比對法，並研製了相應的速度標準裝置（測速誤差0 . 5 % ） 。
  3. Abstract : in the paper, based on the problem that strong reactive background noise can bring about a big measurement error when sound power is measured in a narrow room, such as power room in a diesel locomotive, it is analyzed theoretically that sound power is measured and carried out by using sound intensity probe hood, and sound power of diesel engine surface noise is measured in a power room

    文摘:在狹小空間如內燃機車動力室的條件下，測量柴油機表面噪聲聲功率時，動力室內抗性背景聲很強引起較大的測量誤差，從理論上分析了採用聲強探頭罩進行聲功率測量的可行性，並進行了內燃機車柴油機表面噪聲的聲功率測量。
  4. The author has finished the following several jobs in core of the centre : 1 ) the active compensation method based on bang - bang control was put forward to realize the wide range current transformer. the method converts the complex statement space to i / o description by the two - stage current transformer. with the compensation method, the accuracy of 0. 2 grade current transformer can be improved to less than the 0. 1 grade standard at 100 % rating when the primary side current is changed from 2 % to 120 % of the rating

    圍繞這一工作核心，作者完成了以下幾項工作： （ 1 ）以實現寬量程電流互感器為目標，提出了基於bang - bang控制的有源補償方法，採用雙級電流互感器，將復雜的狀態控制分量轉化為偏差控制，該方法結構簡單，調試方便，有源補償器輸出電流小，可以將0 . 2級的電流互感器經過補償后提高到一次電流從額定值的2變化到120時，測量誤差不超過一次電流額定值100時準確度為0 . 1級的測量標準。
  5. The paper proceeds from the transient equation for voltage and torque, analyze the electromechanic time constant of permanent - magnet dc servomotors based on the theory, and compare with the several testing methods which are used normal in the engineering, point out the difference and applying area also for the testing error which is led to possibly

    摘要為了準確評價伺服電動機的動態性能指標，從電機的電壓、轉矩平衡方程式出發，在理論上對永磁直流伺服電動機的時間常數進行了分析探討，並對工程實際中常用的幾種測試方法進行分析和比較，指出其差別和適用范圍以及可能造成的測試誤差。
  6. We get the sensitivity matrix using the model that contains model error in the following two cases. if the identification data are got using the model without model error before and after the damage, the error resulted from model error can be overlooked. if the data are got using model with model error before the damage and using the model without model error after the damage, error results from model error is first order and model error can bring more assessment errors

    2 、本文詳細分析了模型誤差對損傷識別結果的影響，經過公式推導及實例分析說明，損傷靈敏度矩陣用有模型誤差的理論分析模型來建立，如果損傷前後都用無模型誤差的實測數據來識別，此時誤差為二階微量可以忽略；如果損傷前採用有模型誤差的數據而損傷后採用無模型誤差的實測數據，此時誤差為一階量，可能引起較大的識別誤差。
  7. Conventional single - observer passive locating methods are low in speed and precision. moreover, corresponding locating precision is sensitive to direction measurement errors, which puts forward high demands on measurement equipments impersonally

    傳統的單站無源定位方法總的來說具有定位時間較長、定位精度較低的特點，並且定位精度對方向測量誤差非常敏感，在客觀上對測量設備提出了較高的要求。
  8. Aiming at regression analysis of prediction variable with error, this paper discusses the estimation of regression of coefficient, and a method is given

    林業科學試驗的預測模型中往往帶有測量誤差，此時回歸系數的估計不具有無偏性。為解決這一問題，從合理安排試驗的角度，給出了一個有效的解決辦法。
  9. Then, this paper presents an improved t measuring speed method basing on t measuring speed method, and simultaneously realizes speed and angle measuring with two quadrature encoder pulse circuits of tms320lf2407a. the measuring speed formula is amended based on measuring speed error analysis

    其次，在t法測速的基礎上提出了一種改進的t法測速法，並利用tms320lf2407a的兩組正交編碼電路同時實現速度與角度測量，在分析測速誤差的基礎上，對測速公式進行修正。
  10. In this paper, by analyzing the measuring of instantaneous speed, it was found that the main error is come from the angular measuring error, and then the method to decrease the error is given and the measurement precision is improved greatly

    摘要通過分析柴油機飛輪瞬時轉速的測量誤差，指出角度誤差是飛輪瞬時轉速的主要誤差來源，從而提出了減少誤差的方法，提高了瞬時轉速的測量精度。
  11. Analyze item by item the position of unintact cycle, the running clearance of unintact cycle, locking - deform, datum dimension regulating, repeatly install, power voltage wave and marking running etc. at the same time, we give the calculating formula to calculating the running marking random error, and use it to calculate the system error of big diameter measure instrument - - datum dimension frame error, gyro - wheel diameter error, error caused by circumstance temperature, error caused by backing distance, angle error, delay error of data collecting circuit, lathe main shaft running error, workpiece install partial error

    對不完整圓的位置、不完整圓的轉動間隙、鎖緊變形、基準尺調整、重復安裝、電源電壓波動、標記轉動等隨機誤差進行了逐項分析，並給出轉動標記隨機誤差的計算公式。對大直徑測量儀的系統誤差?基準尺尺架誤差、滾輪直徑誤差、環境溫度引起的誤差、後退距離引起的誤差、角度誤差、數據採集電路延時誤差、車床主軸回轉誤差、工件安裝偏心誤差分別進行了計算，最後對誤差進行合成。
  12. In the base of investigating and analyzing to working theory, measure methods and relevant standard, the text processes particular analyses to the working theory of billing system and reason of making billing wrong and puts forward technology index and measure method that can externally evaluate the capability of billing system and is suit to the situation of our country. some indexes and measure way are put forward for the first time ( example error of call clock, time error and measure method to moving exchanger ' s billing system. ) through analyzing telecom charging way, charging users, charging point and charging methods of telecom basic and all kinds value - added operation and utilizing the newest measure apparatus, modern measure technology, communication technology and probable method, this text puts more scientific, efficient and easily operated measure methods and process a uncertain analysis to measure methods

    本文在調查和分析國內外局用交換機計費系統工作原理、檢測方法和相關標準的基礎上，對計費系統的工作原理和產生計費錯誤的原因進行了詳細的分析，提出了適合國情的能夠客觀評價計費系統計量性能的技術指標和檢測方法，有些指標和檢測方法在國內相關資料中屬首次提出，如通話計時誤差和時刻誤差和對移動交換機計費系統的一些檢測方法；本文通過對電信基礎業務和各類增值業務的計費方式、計費用戶、計費點和計費方法的分析，利用國內外最新檢測儀器、現代檢測技術、通信技術和概率統計方法，提出了較科學、有效和利於實施的檢測方法，並對檢測結果的測量不確定度進行了分析。
  13. A time scale of the sample sn has been reconstructed by a polynomial fitting with 9 dated ages and further tested by annual band counting results. in general, the fitting polynomial line is consistent with the annual band growth rate except for that the bottom part of the stalagmite ( a height between 196 to 255mm from the top )

    石筍sn通過9個~ （ 230 ） th年齡的多項式擬合建立年代序列，利用清晰可數年層段檢驗表明，除底部（ > 196mm ）外其它時段基本吻合； bf1結合~ （ 230 ） th年齡和年層計數法定年，年層計數結果表明定年在測年誤差范圍之內。
  14. Because energy of laser can be focused, the exposure time can be decreased to micron second level, the error brought by wire liberation was reduced

    由於激光具有能量集中的特點，因此，本文所研製的測徑儀，其系統曝光時間被降至微秒級，從而降低了線芯抖動所引起的測量誤差。
  15. Compared with currently fire control system, apsse has such characteristic as : highly precision, complex construction, high technique, etc. so this thesis expatiated in detail on the measuring theory of apsse, emphases on the discussion of system error and random error of apsse, deduced the three axis error of apsse usign the coordination transformation methods, provided the applying base for the measuring error equation of apsse. in this paper, we emphases on expatiating the basic theory of usign space coordination transformation in the measuring error equation of apsse

    因此，論文採用了空間坐標變換方法分析機載光電跟蹤測量設備在對目標進行測量、定位時空間坐標轉換關系，推導出從中心地平坐標繫到目標坐標系的變換矩陣，在此基礎上首先建立機載光電跟蹤測量設備的無測量誤差的位置傳遞方程和機載光電跟蹤測量設備的含有測量誤差的位置傳遞方程，為利用蒙特卡洛法分析機載光電跟蹤測量設備的測量誤差奠定了理論基礎。
  16. Several misunderstandings a bout measuring the outer funace wall temperature, and measures for decreasing the measurement error have been pointed out, and two measuring point structures for scientific and reasonable measurement of outer furnace wall temperature being recommended

    同時，指出了幾種爐外壁溫測量的誤解和減小測量誤差的措施，並推薦了兩種科學合理的壁溫測點結構。
  17. With the compensator, the accuracy of an 2 grade current transformers can be improved to less than the 0. 2 grade standard at 100 % rating when the primary side current is changed from 2 % to 120 % of the rating

    在實驗中將準確度為2級的電流互感器經過補償以後一次電流從額定值的5變化到120時，電流互感器的測量誤差不超過一次電流額定值100時準確度為0 . 2級的測量標準。
  18. When dicussing reliability design and reliahbaiiy ensuring methods, a new reliability calculating model of petroleum logging tools is presented, reliability assurimg technologies should be taken in petroleum logging tools and their using approaches are presented and stated from electricity design and mechanical design, reliability system model of petroleum logging tool is set up according to the latest reliability theory, reliability indexes of petroleum logging tool and their acquiring ways are discussed, the reconmended reliability indexes ( mwture, nolwnm, mtbf, mttf ) of petroleum logging tool are presented : the mean working time under rated error ( mwture ) of the new tool is obtained through experiments. when studying data processing methods, the property of gamma - ray signal is stated and the type of it ' s measuring error is examined using statistical method, the basic theory of digital filtering and the basic situation of digital filtering methods are introduced and analyzed, the factors affecting digital filtering effect to gamma - ray signal and the effect of digital filtering to logging curve are analyzed, the evaluting criteria ( rvi, rmse, sfi ) of digital filtering effect are set up from two aspects, named as real value acquiring of steady section and the formation boundary checking and processing, the related filtering methods and examining methods are given out. the design methods of digital filter used to process gamma - ray signal are discussed, the mixed filtering scheme of natural gamma - ray log is presented, the realization ways are discussed. the selective filtering system and it ' s realization flow are given out through quantitive reseaching to part of digital filters, three new filtering sheme will be used to process gamma - ray signal in era2000 logging system

    在探討可靠性設計與可靠性保障技術時，提出了石油測井儀器的可靠性計算新模型，從電氣和機械兩個方面，提出並闡述了應採用的可靠性保障技術及其使用方法：根據最新可靠性理論，建立了石油測井儀器的可靠性系統模型，探討了石油測井儀器的可靠性指標及其獲取途徑，提出了推薦使用的石油測井儀器可靠性指標（ mwture ， nolwnm ， mtbf ， mttf ） ；通過試驗，得到了所設計儀器的穩定工作時間（ mwture ） 。在研究數據處理方法時，闡述了伽瑪信號的特徵，對測量誤差類型進行了統計檢驗；介紹了數字濾波的基本理論、數字濾波方法的概況，並進行了分析；對伽瑪信號數字濾波效果的影響因素及其對測井曲線的影響進行了基本分析；從獲取平穩段真值、地層邊界的檢測與處理兩個方面，建立了數字濾波效果的評價準則（ rvi ， rmse ， sfi ） ，給出了相應的數字濾波方法及效果評價方法；探討了自然伽瑪信號數字濾波器的設計方法，提出了適合自然伽瑪測井的混合濾波方案，探討了混合濾波方案的實現途徑；通過對部分數字濾波方法的定量研究，給出了靈活可選的數字濾波系統構成及實現流程；提出的三種濾波方案，將用於era2000成像測井系統，對自然伽瑪測井數據進行濾波處理。
  19. Meanwhile, caused by the stochastic disturbances and measurement errors, monitoring model based on single measurement value of individual sampling time tends to lack credibility and stability, and can ' t reflect the overall phase - specific operation state

    同時，由於各種隨機擾動的影響及測量誤差的存在，針對單一采樣時刻的過程測量值進行建模往往不能保證足夠的可靠性與穩定性，無法實時反映過程時段整體運行情況。
  20. According to the actuality of the present research on ct, this paper introduces the measurement principle of rogowski coil and analyzes the factor that influence the precision of measurement, we bring forward a new design scheme based on the rogowski coil

    本文首先介紹了國內外電流互感器發展現狀，重點對rogowski線圈測量原理進行分析，研究了線圈的穩態測量誤差以及幅頻特性、相頻特性、暫態時間響應特性，論證了羅氏線圈作為傳感器單元所具有的優良特性。
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