計數誤差 的英文怎麼說
中文拼音 [jìshǔwùchā]
計數誤差
英文
counting error- 計 : Ⅰ動詞1 (計算) count; compute; calculate; number 2 (設想; 打算) plan; plot Ⅱ名詞1 (測量或計算...
- 數 : 數副詞(屢次) frequently; repeatedly
- 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...
- 計數 : count; tally; counting計數卡 numbered card
- 誤差 : error
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( 2 ) the liman problem is normally adopted to check the liability of numerical method. the calculation error was within 9 % by comparison with the theoretic solutions of liman problem in the following case, the dimensionless calculation length was 2 with high pressure zone 0. 8, and the dimensionless state parameters were p1 = 2, p2 = 1, p1 = p2 = 1, u1 = u2 = 0. experiment results in literature [ 8 ] were used to check the adaptability of the numerical model developed here for unconfined gas cloud explosions and the calculation error was within 13 %
( 2 )數值方法的可靠性通常用黎曼問題的解析解檢驗,本文以無量綱計算區長度為2 ,高壓區長度為0 . 8 ,狀態參數為p _ 1 = 2 , p _ 2 = 1 , _ 1 = _ 2 = 1 , u _ 1 = u _ 2 = 0條件下的黎曼問題解析解對所編制的爆炸場計算程序進行了考核,結果表明該程序的計算誤差在9以內;為考核本文計算模型預測開敞空間氣雲爆炸的適用性,以文獻[ 8 ]的實驗數據進行了校核,計算誤差在13以內。Combining with the modem electronics and computer technology, the calibration data are processed. and then the calibration result is displayed and printed. so that to calibration efficiency is improved ; man - made error is eliminated ; the calibration accuracy is enhanced
論文採用專門開發的專用扭矩傳感器,結合現代電子技術和計算機技術,將檢定結果進行數據處理,然後顯示並列印出檢定結果,目的是提高檢定速度,而且消除人為讀數誤差,提高檢定準確度。The ? 1 word count error exists in nearly all kinds of digital time and frequency measuring instrument and it affects the instrument ' s measuring precision tremendously
在所有的數字式時間及頻率測量設備中,幾乎都存在著1個字的計數誤差。它的存在,極大地影響儀器的測量精度。However, due to measurement, instrumental, computational, and even human errors, the measured process data always mix with noise ineluctably
然而,由於測量誤差、儀表精度、計算誤差甚至是人為因素,過程測量數據通常不可避免地存在噪聲。The half analytic formula is reasoned out, which is applied to the sensitivity analysis on design parameters. through the sensitivity analysis of design parameters in constructing phase of nanpu bridge, the main design parameters are confirmed. based on this, the real value of parameters are identified by least square method, by this token, the error of design parameters can be eliminated in the process of construction control
為了減小鋼管混凝土拱橋施工過程中的施工控制誤差,本文推導出了用於結構設計參數敏感性分析的半解析公式,並對南浦大橋各施工階段的結構參數進行了敏感性分析,從而確定出該橋的主要設計參數,在此基礎上,利用最小二乘法對這些參數進行識別,估計出各參數的真實值,以消除施工控制中結構設計參數誤差。Measuring cylinder is used on test bench of fuel injection pump all over the world, so manufacture error, sight error etc make the accuracy degree low. the thesis analyses the problem of fuel measurement system of the test bench of fuel injection pump, and the experiments and designs are done according to the problem, and the type and situation of the test bench of fuel injection pump all over the world is refered to
目前國內外噴油泵試驗臺量油系統普遍採用量筒式計量法,該方法存在量筒的製造誤差、沉積誤差、液面讀數誤差、氣泡誤差、揮發誤差以及測量人員的視覺誤差等,使得測量精度較低、耗時長,已不能滿足對汽車發動機的環保技術要求和節能要求。With the mathematic model of tracking beam current by velocity, real - time tracking can be obtained ; with current simulation controlling transducer and subsection linearity, precision of velocity ( error in ? 1 % ) is triumphantly can be controlled ; with inspection of the pulse numbers of switches, the position of all vehicles are checked to eliminate the error of calculating distance between all ones
通過建立速度跟蹤束流的數學模型,較好地解決了速度跟蹤束流的實時性問題;通過採取用電流模擬量控制變頻器和分段線性處理的辦法,成功地解決了速度精度問題(誤差在士1 %內) ;通過檢測接近開關觸發的脈沖數,適時校核所有小車位置,消除各車之間距離計算誤差,從而很好地解決了距離累計計算誤差。In the main theorem, we obtained the error bound between the maximum likelihood estimator and the true parameter
使用這個不等式和概率論的方法,我們得到了參數的極大似然估計的誤差界這一主要定理In this paper we made a systemic analysis and study of the accurate orientation technology in the process of helicopter landing - photogrammetry, made the model of using double ccd to measure the exact position of helicopter based four latent points photogrammetry, educed formula about beaconing position, analyzed the computing error, and particularly computed the information of beaconing position of the helicopter ' s landing by experiment emulation. in the result, the error between a computed value and a measurement value was less than 5 centimeters
本文對直升機著艦精確定位技術中的攝影測量演算法進行了系統分析和深入研究,在四特徵點測量演算法基礎上建立了雙ccd攝影測量直升機精確位置坐標的數學模型,進一步從各個影響演算法測距精度的方面討論了計算誤差,推導出測量信標坐標位置的計算公式,並對利用雙攝影測量演算法計算直升機著艦掛鉤位置的正確性及準確性進行了模擬實驗,得到的演算法計算值和實驗測量值之間的誤差在5cm以內。The back analysis program is used to calculate rock parameters of an engineering example. the result is good and correct. the error of displacement based on the parameter gained by the back analysis program is little
將編制的反分析程序應用於某工程計算實例的巖體參數反分析,經檢驗,得到的結果參數理想,準確度較高,用於位移計算誤差較小。The water quality respond relation of input - output measurements are established by systematic theory in this paper. according to the peculiarity of hydrology and the necessity of water quality inverse problem the multi - parameter inverse problem model based on ordinary differential equation is developed. the existence and uniqueness of the solution of the ordinary differential equation about two parameters or multi - parameter are to be proved. the unstability depending on errors between monitoring data and interpolation approximate data are analyzed and demonstrated. cubic spline interpolation function, the least two multiply and positive rule method are conjoined for obtained solution of multi - parameter. the results from this algorithm indicats its efficient to the multi - parameter identification in water quality modeling
本文應用系統理論,建立了水質多參數輸入輸出之間的響應關系;根據河流水文水質變化特點和參數反問題的需求,建立了水質常微分方程多參數反問題模型.根據常微分方程參數反問題的數學理論,作者給出了兩參數和多參數水質常微分方程反問題的解的存在性、唯一性的理論證明過程和結論;還針對水質現有監測資料的測驗誤差和插值近似計算誤差造成參數反問題的不穩定性,將三次樣條插值函數、超定方程最小二乘法和正則化演算法有機地結合使用,成功地給出了水質參數反問題的穩定化演算法.最後給出了應用計算結果The key feature of the proposal approach is using feedback linearization method to design a single hidden layer artificial neural network whose weights is renewed online to augment parametric uncertainty and unmodeled dynamics
其特點是採用隱含反饋線性化方法,設計單隱層神經網路在線更新權值,自適應補償參數誤差和未建模動態。In numerical computation aspect, by implying new computational geometric field, computation error caused by boundary condition was decreased
在數值計算方面,本文採用了新的計算域,減小了由於邊界條件造成的計算誤差。Their directions can be read to within 5° from a circular scale attached to the strain gauge.
其方向可以在應變計的圓形刻度尺上讀出,讀數誤差約在5內。< uk > their directions can be read to within 5 from a circular scale attached to the strain gauge. < / uk >
< uk >其方向可以在應變計的圓形刻度尺上讀出,讀數誤差約在5內。 < / uk >The whole system has friendly interface, convenient operation and comprehensive functions, which can be used widely in scientific research institutes and factories. the system of blower performance auto - testing improves the stability of testing process, avoids the error of reading, the error of calculation and the error of result causing by relative datas can not be recorded at the same time, the precision and efficiency of testing is largely improved
整個系統具有界面友好、操作方便、功能齊全等優點,試驗結果表明研製基於虛擬儀器的風機性能自動測試系統,增加了試驗過程的穩定性,避免了人為的讀數誤差、計算誤差以及相關數據不能同時記錄所引起的試驗結果的偏差,提高了測試精度和試驗效率。That is to say, in order to measure the adjoint coefficients of sound radiation modes, we should design the particular shape of error sensor
因此我們必須設計出誤差傳感器來測量所需控制的聲輻射模態伴隨系數。A batch least - squares maximum likelihood estimator is employed to calibrate the model coefficients of accelerometer and a polynomial post - fit method is used to establish temperature models of these coefficients. the temperature models of accelerometer bias and scale factor of accelerometer are established between - 20oc and 50 oc. after compensating the temperature error by using these models, the post - fit residuals of the accelerometer output have been improved to 10 ? 5 g, and the trend term of accelerometer changing with temperature basically vanished
採用最小二乘極大似然估計和多項式擬合的方法,分析加速度計靜態模型系數隨加速度計殼體溫度變化的規律,建立了- 20oc 50oc之間加速度計零偏和標度因數誤差的溫度模型,應用該模型對加速度計溫度干擾進行補償,補償后,加速度計輸出的擬合均方根誤差一到二個數量級,並且基本上消除了加速度計輸出隨溫度變化的趨勢項,使得加速度計測量精度得到了明顯提高。The result of a discussion about the statistical distribution shows there are different distribution forms between the data errors and estimated parameters in non - linearity inversion. the precision of estimated bottom sound speed is well than the estimated bottom density. although there is a same data errors distribution in perturbative inversion, the distribution of each inverted eof coefficient is different
統計誤差分佈的討論結果顯示:在非線性反演方法中,數據空間誤差分佈與參數空間誤差分佈不相同,這種匹配方法估計的海底聲速的準確性好於對密度估計的準確性;在擾動反演演算法中,相同的數據誤差分佈條件下,反演的eof各項系數誤差分佈不同。At present, almost all steel factories count bundled bar one by one by workers, it is laborious, low effective, and may cause high error. if these factories would import foreign automatic product lines, they will pay much and improve the cost of steel bar dramatically
目前,國內大多數鋼材生產廠家都採用人工方法來計量捆紮線材的根數,效率低下,勞動強度高,計數誤差大,而引進全自動生產線,成本較高,因此,他們迫切需要低廉的自動計數儀。分享友人