誤差比 的英文怎麼說
中文拼音 [wùchābǐ]
誤差比
英文
error ratio-
The computational results of the particle images are agreement with the simulated datain reasonable, the most absolute difference of the displacement is 0. 6671 pixel at the x abscissa and 0. 7928 pixel at y abscissa ; the computational results are equal to the data form the algorithm of particle brightness - distribution pattern tracking ( the conventional cross - correlation algorithm ) at voluminous points, their discrepancy is only one pixel at few points, mostly in boundary area
西安理工大學碩士學位論文最後，在visualfortran環境下給出了這種演算法的具體實現，處理模擬粒子圖像的結果與模擬數據比較吻合，最大位移絕對誤差在x方向是0 . 6671像素，在y方向是0 . 7928像素;計算結果與示蹤粒子灰度分佈模板法（基本的互相關法）在絕大部分點是相同的，只在少數點相差一個像素，而且大多出現在邊界區域。Comparing the theory calculation and the experimental testing date. firstly, analyzing the same law to interpret the conditions of the equations accusative describing the air dealt with process and advancing the improving measures. secondly, analyzing errors
對理論計算及試驗測定結果進行對比分析，一方面分析共有變化規律，以說明組合方程組較能準確描述實際處理過程的條件，從而驗證組合方程組的合理性程度；另一方面分析誤差產生原因，提出改進方法。The method is given to solve the problem in adaptive demodulation that adjudgement will worsen when the snr is low. by using the error signals to reduce the demodulated signals, the bit error rate will be improved
模擬中，針對dpsk信號的自適應解調中小信噪比下門限失效的問題，提出了利用誤差改進門限判決的方法，將誤碼性能提高了1 2db 。We also give the theoretical error result of antithetic variable monte carlo ( amc ) method for multi - variable functions whose degree is no more than two. the constant before o ( n - 1 / 2 ) is less than that of the mc method
對次數不高於2的多變量函數， amc方法其誤差階是o （ n ~ （ - 1 / 2 ） ） ，但其系數比原始蒙特卡羅積分（ mc ）方法的誤差階的系數小。In this paper, the relation between differential driven ratio accuracy and the common normal length error of cylindrical bevel wheel has been found by experimental method, which provides a efficient way for cylindrical bevel wheel manufacturer to control the common normal length error of the wheel
摘要通過實驗研究，尋找出差動傳動比的精度與斜齒圓柱齒輪的公法線長度誤差的關系，從而為斜齒圓柱齒輪的加工提供一個可以控制斜齒圓柱齒輪公發線長度誤差的有效方法。The gravity analysis is carried out especially for the synthetic fused silica and calcium fluoride used in 193nm lithographic objective as well as the optical elements with structural sizes of ( 200mm ~ ( 300mm. large numbers of analysis data for surface shape error are obtained by using algor finite element analysis software. then these data are plotted into curves and comparison analysis will be carried out, finally the measures and schemes for reducing gravity deformation are proposed
因此，本論文重點對大口徑光學系統在高精度光學鏡頭裝校中，因重力變形進行了詳細的分析研究，特別針對193nm光刻物鏡系統所使用的材料sytheticfusedsilica和caleiumfluoride以及用到的結構尺寸200mm ~ 300mm光學零件進行了重力變形分析，使用algor有限元分析軟體獲得了大量的面形誤差分析數據，然後將這些數據繪成曲線進行對比分析，最後提出了減小重力變形的措施與方案，並進行了實驗，驗證了分析結果是正確的，減小重力變形的方法是有效的。In digital relay, the percentage of noise will increase rapidly with the increase of sampling rate when derivation calculus is substituted by sampled difference term. to solve this problem, a new method using fragment function integrated with the least square algorithm is proposed in this paper. the influence of white noise is greatly reduced and the accuracy of the dead angle calculation is nicely improved after adopting the new method
在數字式保護中，如果用差分代替求導將導致噪聲的百分比誤差隨著采樣頻率的提高而劇增，本文對此進行了分析並提出了用分段樣條函數最小二乘法來計算電流波形的導數值，以便在提高采樣率的同時降低噪聲誤差的影響，並將其應用於基於32位浮點dsp的新型變壓器保護裝置。Finally, this thesis discussed these following questions : first, the algorithm of used the error image for improving the purpose of the edge detection. secondly, we have transformed the solved question of the first and the second directional derivative to frequency domain and founded they have a single formulae in frequency domain. thirdly, we have described the singular signal and the noise by using the correlations of the neighbor data after wavelet transform
最後，在傳統的邊緣檢測演算法和小波分析的邊緣檢測演算法之外，對以下幾個方面也進行了一些討論： 1 ）利用誤差圖像來提高邊緣檢測效果的演算法； 2 ）將求解任意方向的一階、二階方向導數的問題轉換到頻域中去求解，發現在頻域中它們具有簡單易用的公式，使得原來求解任意方向的一階、二階導數的比較困難的問題變得容易實現了。Compared with the induction meter, the electronic meter ' s measurement error is affected diminutively by the change of the frequency, that is to say, the electronic meter has a wide frequency respond characteristic and its error - frequency characteristic curve is flat. therefore, taking the whole energy as measurement standard, the measurement error of electronic meter is less than that of induction meter very much ; while the measurement error of electronic meter is bigger than that of induction meter when taking the basic energy as measurement standard
和感應式電能表相比，電子式電能表的計量誤差受頻率變化影響較小，具有較寬的頻率響應，誤差頻率特性曲線較為平坦，因此，在諧波存在下以全能量為計量標準時，電子式電能表的計量誤差遠遠小於感應式電能表的電能計量誤差，而以基波能量為計量標準時，電子式電能表的計量誤差比感應式電能表的計量誤差大。In the process of gps triple frequency observables, the rms of the integer ambiguity isn ' t fit for detecting and correcting cycle slips for the pseudo - range noise
摘要在gps三頻非差觀測數據的處理中，由於偽距噪聲的影響，利用原始的偽距和載波相位觀測數據估計的模糊度誤差比較大，不能用於探測和改正周跳。The critical error has been found through computation, which is the error circling the gear. the load sharing characteristics of two kind of star - type gearing train has been determined through comparison. based on computation, the load sharing capability of two - stage external gear train is better than that of two - stage internal and external gear train
其次，從靜力學的角度分析了各誤差對系統均載性能的影響，比較了各誤差對系統均載性能影響的大小，得到了較大的影響系統均載的誤差因素，即圓周方向分佈的誤差；比較了兩種星型齒輪系統的均載性能，根據計算結果，兩級外嚙合傳動系統的均載性能要好於兩級內外嚙合傳動系統。[ 3 ] the greatest error is 50 % between the result given by the affinity law of u. s. a and that calculated by using the trim law issued in this work
（ 3 ）發現在輸送水時美國的葉輪切割定律計算結果與本文相差最大為50 。按美國的切割指數用於離心油泵葉輪切割，誤差比較大。If the error of structural parameters of the spherical - wrist and the error of movement variables of every joint were comparatively big, there will produce rather big deviation in searching the posture error of end executor by the use of existed method
如果球腕的結構參數誤差與各關節的運動變量誤差比較大，則應用現有的方法求取末端執行器的位姿誤差會產生較大的偏差。If applied experiential formula mechanically to calculate the dynamic moment of the tri - eccentric butterfly vavle, its errors for the results would be larger. the paper, by virtue of the postulate of flow with fixed constant, eddiless of ideal liquid, calculated laplace equation by finite difference method in rectangular coordinates, gained pressure distribution on the butterfly disc section, thereby figured out its dynamic moment under each opening angle and the method was feasible for calculating dynamic moment of symmetry or not, designed the program and described the curve of dynamic moment. finally, the paper infered their laws
採用經驗公式來計算三偏心蝶閥的動水力矩，誤差比較大，本文根據三偏心蝶閥的結構特點，利用理想流體的定常、無旋流動的假定，用有限差分法在直角坐標系中求解拉普拉斯方程，得到蝶板截面上的壓力分佈，從而計算出蝶板在各個開度下的動水力矩，設計出了求解的程序，給出了程序運行的結果並進行了數據處理從而得到了動水力矩曲線，總結了它的變化規律。Amtis and aster images were scaled up using pixel aggregation algorithm to find scaling error of surface flux estimation. the results show that the largest error appears at the interface of different coverage types, and the error show much complexity because of the discontinuity of algorithms at these boundaries. additionally, the contamination of building, highway and other ground information also add some error in the estimation of land surface e vapotranspiration
將amtis和aster圖像降低解析度后計算通量，檢驗其尺度誤差，結果表明，在不同覆蓋類型的交界處通量誤差比較明顯，由於演算法本身的不連續性，其誤差規律較為復雜，另外，道路、建築等對通量計算無用的信息也是造成大像元尺度誤差的原因之一。This paper achieves expected digital filters program through algorithms descriptions, analyzing and realization, simulation, comparing on error and speed. this paper achieves expected digital interpolations program through algorithms descriptions, analyzing and realization, simulation, comparing on error and speed
本文應用matlab信號處理工具箱，通過對數字濾波器演算法的描述、演算法分析、實驗模擬、誤差比較，及性能比較，最終獲得滿足要求的數字濾波程序，並編譯成c + +源代碼文件配合主程序調用，完成了系統聯調。Based on the study of the theory of error inspection and the technology of actual form inspection, author proposed that apply reverse engineering to the digital inspection of door plate. based on reverse engineering, establish exactly surface matching, compare a stamping part with antetype in surfacer interface, to inspect the quality of stamping part, statistic analysis the inspection data, find the ultimate reason of quality fluctuate appeared
本文在對誤差檢測理論及現行形位誤差檢測技術進行深入分析的基礎上，提出了將逆向工程應用於轎車門板的數字化檢測的方法，通過建立精確的曲面匹配，將原型件與沖壓件在逆向工程軟體surfacer中進行形位誤差比較，檢測產品製造質量。To solve the problem of filtering divergence in the case of low observability and large estimating error to the target ’ s original state in the ssbopls, this thesis presents a two - stage multiple mode extended kalman filtering ( ekf ) algorithm. at the beginning of filtering, system often has large estimating error. in order to efficiently avoid filtering divergence, the algorithm uses a mode - set which contains multiple modes to approach the real target state mode
在估計誤差比較大的濾波初始階段，採用多個模型組成的模型集合加權來逼近目標的真實狀態模型，可以有效地減小濾波的模型誤差，避免濾波的發散;當濾波達到穩態后，改為採用單模型濾波以節省計算量和系統存儲量。So it is rough this method to forecast, which educes approximate forecasting value and the error is bigger comparatively. this method ca n ' t be satisfied when calling for good precision
因此，這種方法預測比較粗糙，只能在宏觀上有個大致的預測，預測誤差比較大，對于精度要求比較高的很難滿足。The main contributions of this thesis are as follows : ( 1 ) the conventional minimum output energy ( moe ) algorithm has the global convergence but its stable excess mean square error is high and it ca n ' t converge to the minimum mean square error ( mmse ). in this thesis an equivalent decision feedback moe ( df - moe ) algorithm variable step - size is presented and analyzed
主要工作可以概括如下： （ 1 ）針對最小輸出能量檢測器（ moe ）具有全局收斂，但是穩態剩餘均方誤差比較大，無法收斂到最佳mmse檢測器的特點，提出並分析了一種等效的判決反饋變步長moe檢測演算法（簡稱df - moe ： decidedfeedbackmoe ） 。分享友人