數值計算誤差 的英文怎麼說

中文拼音 [shǔzhíjìsuànwùchā]
數值計算誤差 英文
error in numerical calculation
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 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...
  • 算 : Ⅰ動詞1 （計算數目） calculate; reckon; compute; figure 2 （計算進去） include; count 3 （謀劃;計...
  • 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...
  • 數值 : numerical value; numerial number; figure; magnitude; value數值表 numerical tabular; 數值天氣預報 ...
  • 計算 : 1 （求得未知數） count; compute; calculate; reckon; enumerate 2 （考慮; 籌劃） consideration; pla...
  • 誤差 : error
  1. ( 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。
  2. Based on developed experimental testing facility, the shading performances of southing horizontal shading devices, vertical shading devices and integrative shading devices of external windows are measured, the performance parameters including indoor temperature, air - conditioned cooling load and shading coefficient as so on. and the shading coefficient of experimental test results and calculation results based on design standard for building energy efficiency are compared, and the windows5. 2 simulation results are compared also. the measured results are consistent with the calculation results of horizontal shading devices and vertical shading devices

    本文利用研製的建築遮陽性能檢測裝置，對南向水平遮陽板、垂直遮陽板和綜合遮陽板外窗的遮陽性能（包括室內溫度、空調耗冷量和遮陽系數等）進行了實驗測試，並對遮陽系數的實驗測試結果與節能設計標準的計算值以及windows5 . 2軟體的模擬結果進行了比較分析，測試結果表明水平遮陽板和垂直遮陽板外窗的遮陽系數與計算結果比較一致，相對誤差分別為2 . 5 %和4 % ，而綜合遮陽板外窗的遮陽系數與計算結果的差值比較大，相對誤差達到10 %以上。
  3. The results demonstrate that the maximum difference between measured and calculated surface temperatures is less than 8 %

    結果表明，數值計算結果與實驗結果的最大誤差小於8 % 。
  4. By means of error analysis of recursion process of precise integration, it is found that the essential reason of obtaining the high precise numerical results of exponential matrix in the precise integration method is that the relative error of numerical computation is not enlarged in a whole recurrent process

    通過對精細積分法遞推過程的誤差分析，發現該方法能獲得高精度數值結果的根本原因是：數值計算的相對誤差不隨遞推過程的進行而擴散。
  5. In order to accurately analyze the error in the non - orthogonal coordinate measuring system, the circular cylindrical coordinate measuring system is discussed first and the formula of its number of errors is computed, and then it extends to the non - orthogonal coordinate measuring system of n dimensions arms of robots, and build its error compensation modal, which is proved to have high precision

    為了正確分析非正交坐標系機械繫統的誤差情況，本文先以柱坐標系測量系統為例。分析了引起測量系統示值誤差的各種機構誤差。並且分析得出其誤差項數的計算公式，然後推廣到n維機器人手臂結構的非正交坐標系機械繫統，建立其誤差補償的數學模型。
  6. Secondly, because of the faultiness of these algorithmic routines of dissipation factor in existence, this dissertation puts forward an improved correlation function algorithm based on wavelet analysis, and the improved algorithm focuses on two lesding aspects : one is the methods to reduce noise and distill the fundamental, the other is the means to reduce the errors resulted by frequency fluctuating

    其次針對現有介損計算方法的不足，提出了一種基於小波變換理論的改進相關函數法的介質損耗值計算方法，主要從去噪、提取基波的方法以及降低由於電網頻率波動所造成的誤差兩個方面來考慮。並對此方法進行了模擬分析和驗證了改進演算法的優越性。
  7. 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。
  8. 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
  9. Lmpa, the relationship is f di = l 55xl0 - " e47j l t ) in this range, the relative error of the hydrgen permeabilty bbeen the experimental values and the formula values are less than 3 %, the durability test showed that after the cycle experiments of prcssure and tempebe for 30 days, the perfrmance of the membran did not change, at last, the theory of hydrogen permeaton was discussed, too. through this work, the pfepared surf ases modified zirconium memran can satisfy the requirement of the purity and the permeating fiux of hydrogen isotope gas

    Imp范圍內，鋁表面改性選擇滲氫膜的數學表達式為： （ 1320 i 155x10 」 exd l 「 t ）在這個溫度和壓差范圍內，滲氫系數的實驗數據計算值與數學公式計算值的誤差在3以內；鉻表面改性選擇滲氫膜的壽命考核實驗表明，經過連續30大的循環溫度、壓力實驗，膜的質量、性能無變化；並討論了膜的滲氫理論。
  10. Finally, by means of comparing the theoretical tooth surface equation with the tooth surface equation included errors of cutter position and cutter position angle, the quantitative analysis of the theoretical tooth shape and the tooth shape considering the errors of cutter position and cutter position angle was curried out based on the software above. from which, the effect of errors of cutter position as well as cutter position angle on the processed tooth shape and transmitting behavior of this kind of gearing was studied

    最後，通過比較雙圓弧弧齒錐齒輪齒面理論方程與加入刀位及刀位角誤差后的齒面方程，應用上述軟體和通過進一步的數值計算，進行了無誤差的理論齒形與加入刀位及刀位角誤差后所得到的實際齒形之間的定量分析，比較直觀、方便、準確地對刀位及刀位角誤差對雙圓弧弧齒錐齒輪的齒形以及傳動的影響進行了初步研究。
  11. 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。
  12. Simulation results indicate that the algorithm can reduce the delay ' s uncertainty range greatly, even with great position errors the uncertainty range still can be reduced to the half, and is effective for the fast acquisition of long cycle code

    數值計算表明，演算法能夠大大壓縮不同導航星和不同場景用戶之間傳播時延的不確定范圍，即使在用戶與衛星位置誤差較大的惡劣應用背景下也能將不確定范圍壓縮一半，從而有效地輔助長碼快捕的實現。
  13. According to the measured values of the joint angles and the end - effector positions, jacobian matrix is calculated, and errors between the desired and the measured positions of the end - effector are exported to the least square method to determine the compensation for the dimensional parameters of the robot

    通過機器人關節角和末端手爪位置的測量數據，計算雅可比矩陣以及手爪位置理論值和實測值的誤差，採用最小二乘法對機器人的尺寸參數進行補償量的計算。
  14. In present dissertation, the model of ert was established, the method to deduce the system equation using finite element method ( fem ) was discussed, and the process of calculating the voltage, resistance and sensitivity matrix through numerical computation was also introduces. because during the process of positive problem solution, errors are unavoidable, so the evaluation of the results were carried out through data and diagram, also the influence to the results caused by the change of parameters was analyzed

    由於在正問題求解過程中，被測域的離散化、計算公式的離散化以及數值計算的近似處理等都將不可避免的引入誤差，因此論文中對計算結果進行了評價，分析了傳感器的參數（電極數，電極尺寸等）以及計算過程所用參數（如剖分精度）的改變對計算結果（電勢、電阻、敏感場）的影響。
  15. The astringency, error and stability of the numerical method are researched. zero matrix method, constant matrix method, and jacobian matrix method are constructed in order to improve numerical precision and efficiency. the steps for calculating matrix exponential function using pade approach method are given out

    研究了所提西安理工大學博士學位論文數值計算方法的誤差、穩定性、收斂性等數學性質，在計算精度和計算效率兩方面提出了一些改進措施，構造了零矩陣法、常數矩陣法、雅可比矩陣法等計算格式，給出了利川pade逼近計算矩陣指數函數的求解步驟。
  16. A combined gauss main - element elimination method with compress - storage technique is proposed, which with the characteristic of less - storage requirement, small rounding off and high stability, and solved the problem of large storage requirements in solving large linear algebraic equations in river networks hydraulics, 3

    提出了壓縮存貯形式的gauss列主元消去法，該方法具有存貯量小、舍入誤差小、數值計算穩定的特點，在一定程度上解決了河網水力計算問題中關于眾多線性方程組的存貯及其求解過程中可能面臨的困難。
  17. 6. this thesis solves the rapid dem producing problem for large - scale terrain " massive data ". at the same time, it implements robustness processing on each significant algorithm, which avoids the potential failure in dem producing due to the mathematical computing errors

    實現了大比例尺地形「海量數據」快速建立dem的問題，同時對各個關鍵演算法均進行了健壯性處理，從而避免了數值計算誤差可能帶來的dem建立失敗。
  18. In the process of computation a method based on mass conservation and a special iteration procedure are applied to accelerate the convergence speed and minimize the error of water balance

    在數值計算過程中，採用了質量守恆和特殊的迭代求解格式以加快計算收斂速度和減少水量平衡誤差。
  19. The comparison showed that : ( l ) farassat 1a formula is the simplest one and work well for the subsonic rotor. ( 2 ) both kirchhoff formula and k - fwh formula can predict the nonlinear noise generated by transonic rotor ; ( 3 ) when the surface is not positioned in the linear region, kirchhoff approach for rotating integration surface could lead to substantial error, but k - fwh formula can still work well

    數值研究表明： farassat1a公式在預測線性噪聲方面簡單有效，適用於亞音速旋翼的噪聲預測； kirchhoff公式和k - fwh公式均能夠預測跨音速旋翼聲場，並且具有較高的精度；當聲源面位於流動非線性時， kirchhoff公式會導致很大的計算誤差，而k - fwh公式不存在這樣的問題。
  20. This paper consists of two parts : on the one hand, the numeric method - nfdtd used to analysis this new kind of antenna is introduced. and its numeric error is analyzed. on the other hand, this new kind of antenna is studied and analyzed by nfdtd

    論文的主要內容可分為兩個方面:一方面介紹了分析研究這種天線的數值方法? ?非均勻網格時域有限差分法，並對非均勻網格時域有限差分法的計算誤差進行了研究。
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