estimate accuracy 中文意思是什麼

estimate accuracy 解釋
估算精度
  • estimate : vt 1 估計，估算；估價；估量。2 評價，評斷。3 〈古語〉尊重。vi 估計，估價。n 1 估計;預測；〈英國〉...
  • accuracy : n. 正確，準確（度）；精確。 firing accuracy 命中率。 with accuracy 正確地。
  1. The estimate method of the accuracy of gps height abnormity interpolation

    高程異常擬合精度的估算方法
  2. Creep analysis methods of high - rise buildings and large span buildings can only refer to creep coefficient method in bridge engineering or the method of degree of creep in hydraulic construction engineering under the present experiment conditions. in this paper, the incremental expressions of concrete creep and shrinkage strain when the initial computational age is not the same as the loading age are derived and corrected from the concept of concrete creep coefficient and the mean value theorem of integral and the principle of superposition. the differences of efficiency and accuracy of creep analysis between the finite element method with creep coefficient and the initial stress method with degree of creep are presented. this paper suggests that engineers should use the initial stress method with degree of creep to estimate the influences of creep on high - rise buildings and large span buildings on the basis of conceptual design

    基於現有的試驗資料，高層及大跨度民用建築的徐變分析只能參照橋梁結構中的徐變系數方法或水工結構中的徐變度方法進行.從徐變系數的定義出發，利用積分中值定理和疊加原理，推導並修正了加載齡期與起算齡期不同時徐變收縮應變增量的表達式，對比了應用徐變系數分析徐變的有限元法和應用徐變度分析徐變的初應變法在效率和精度上的差別，並建議應從概念設計的角度出發，採用徐變度的初應變法來估算徐變對高層及大跨度民用建築的影響
  3. Abstract : creep analysis methods of high - rise buildings and large span buildings can only refer to creep coefficient method in bridge engineering or the method of degree of creep in hydraulic construction engineering under the present experiment conditions. in this paper, the incremental expressions of concrete creep and shrinkage strain when the initial computational age is not the same as the loading age are derived and corrected from the concept of concrete creep coefficient and the mean value theorem of integral and the principle of superposition. the differences of efficiency and accuracy of creep analysis between the finite element method with creep coefficient and the initial stress method with degree of creep are presented. this paper suggests that engineers should use the initial stress method with degree of creep to estimate the influences of creep on high - rise buildings and large span buildings on the basis of conceptual design

    文摘:基於現有的試驗資料，高層及大跨度民用建築的徐變分析只能參照橋梁結構中的徐變系數方法或水工結構中的徐變度方法進行.從徐變系數的定義出發，利用積分中值定理和疊加原理，推導並修正了加載齡期與起算齡期不同時徐變收縮應變增量的表達式，對比了應用徐變系數分析徐變的有限元法和應用徐變度分析徐變的初應變法在效率和精度上的差別，並建議應從概念設計的角度出發，採用徐變度的初應變法來估算徐變對高層及大跨度民用建築的影響
  4. A method, called r / s analysis, is employed to improve the estimate accuracy of the hurst exponent. the simulation results show the method mentioned above is also an efficient filter

    針對hurst指數的估計誤差較大的問題，本文引入r s分析法，模擬研究表明該方法在提高hurst指數估計精度的同時提高了wls法的濾波效果。
  5. We can observe good estimate accuracy with it. in other words, we can decrease the probe packets and get accurate link - level loss estimates. both the multi - stripe packet and three - leaf tree mode can get fruitful inference of

    包群方法與三叉樹模型都能在保證一定估計精度的基礎上，減少探測包的數目，從而減小由於發送探測包對網路流量和負載帶來的影響。
  6. The main works as the following : r / s analysis is introduced to improve wavelet - generalized least squares ( wls ) in order to increase the estimate accuracy of the hurst exponent

    本文的主要工作和創新點如下：提出了一種針對wls （ wavelet - generalizedleastsquares ）的ar模型法的改進演算法。引入r s分析法對wls法進行改進，以提高hurst指數估計精度及濾波效果。
  7. Experimental results show that wls is better than classical autoregressive ( ar ) models for 0. 5 < h < 1. it also can be seen that the disadvantage of wls is most salient for the lower of estimate accuracy of hurst exponent

    本文對wls法進行了模擬研究，研究結果表明wls法對h 0 . 5的1 f噪聲的濾除作用明顯優于傳統的ar模型，但同時發現wls法對hurst指數的估計誤差較大。
  8. It is very important to estimate the basic parameters in helicopter preliminary design. neural network ( nn ) has the advantages in estimating accuracy and generalization over traditional methods. however, there are some difficulties in using nn, e. g., how to select a proper network structure and the number of hidden layers. in this paper, structure and connection weight of a three - layer nn are optimized by genetic algorithm, and the optimized network is applied to helicopter sizing. the proposed method can not only give an optimal nn structure and connection weight, but also reduce the prediction error and has the capability of self - learning when the latest data are available. furthermore, this method can be easily applied to helicopter design systems

    在直升機初步設計階段估算其基本參數是很重要的.神經網路的通用性和精度比傳統的估算方法有更多的優勢，但是在應用神經網路時存在如何選擇合適的網路結構和隱層節點數目等一些困難.應用遺傳演算法優化三層神經網路結構和連接權重，並將優化得到的網路應用於直升機參數選擇中.該方法不但可以給出一個最優的神經網路結構和連接權重，而且降低了估算誤差，具有及時應用最新數據學習的能力.此外，該方法易於在直升機設計系統中得到應用
  9. Airborne gravimetry which is discussed in this paper denote scalar airborne gravimetry only. in order to estimate the accuracy of airborne gravity measurements, the tracks of an airborne gravity survery are generally planed to join each other

    依據測量值的類型不同，它可以分為航空標量重力測量和航空矢量重力測量兩類，前者用以測定重力加速度的大小，後者不僅測定重力的大小，而且同時測定重力的方向。
  10. The unscented kalman filter is used to estimate the probe position, velocity and un - model acceleration, which improves the orbit estimation accuracy and ensures the stability of navigation algorithm

    數學模擬結果表明，提出的導航方法是可行的，能夠滿足月球探測器奔月與繞月軌道段導航精度的要求。
  11. ? adaptive engines for estimate parameters are applied and estimation accuracy is derived from mathematics inference in all control devise, it overcomes the defects that only simulation can be provided but no mathematics inference in some study results

    在各類控制設計中，以保證系統的狀態、誤差及參數估計一致終極有界為目標，從嚴密的數學推理角度，給出了各種估計的數學分析，克服了以往類似研究成果中或缺少理論分析或沒有實驗模擬的缺陷。
  12. It is certainly possible that a given analysis engine may request more than one type of measurement be taken to improve the overall accuracy of the resulting estimate ( s )

    很顯然為了提高測試結果評估的整體精確度，一個給定的分析引擎可能需要一種以上的測試方法。
  13. Aim at the dtc ' s blemish mentioned above and the direction of dtc technique development, the dissertation put great emphasis on the work as follows, with an eye to exalt dtc system function : ( 1 ) a new speed - flux observer of an induction motor is proposed to enhance the accuracy of flux observing, which is an adaptive closed - loop flux observer and different from the traditions. a new adaptive speed - observation - way is deduced out according to the popov ' s stability theories ; ( 2 ) to improve the performance of dtc at low speed operation, we have to exalt the accuracy of the stator flux estimation and a new way of bp neural network based on extended pidbp algorithm is given to estimate and tune the stator resistance of an induction motor to increase the accuracy of the stator flux estimation ; ( 3 ) digital signal processor is adopted to realize digital control. an device of direct torque control system is designed for experiment using tms320lf2407 chip produced by ti company ; ( 4 ) bring up a distributed direct torque control system based on sercos bus, sercos stand for serial real time communication system agreement which is most in keeping with synchronous with moderate motor control ; ( 5 ) the basic design frame of the hardware and software of the whole control system is given here and some concrete problem in the experiments is described here in detail

    針對上面提到的直接轉矩控制的缺陷和未來直接轉矩控制技術發展方向，本論文重點做了以下幾個方面的工作，目的在於提高dtc系統的綜合性能： （ 1 ）提出一種新型的速度磁鏈觀測器，新型的速度磁鏈觀測器採用自適應閉環磁鏈觀測器代替傳統的積分器從而提高磁鏈觀測的精度，並且根據popov超穩定性理論推導出轉速的新型自適應收斂律； （ 2 ）改善系統的低速運行性能，主要從提高低速時對定子磁鏈的估計精度入手，提出了一種提高定子磁鏈觀測精度的新思路? ?利用基於bp網路增廣pidbp學習演算法來實時在線地修正定子電阻參數； （ 3 ）採用數字信號處理器dsp實現系統全數字化硬體控制，結合ti公司生產的tms320lf2407晶元，設計了直接轉矩控制系統的實驗裝置； （ 4 ）提出了基於sercos總線網路化分散式的直接轉矩控制系統， sercos （ serialrealtimecommunicationsystem ）是目前最適合同步和協調控制的串列實時通信協議； （ 5 ）基本勾勒出整個控制系統的硬體和軟體設計基本框架，詳細描述一些實驗中的具體的細節問題。
  14. Third, the accuracy of parameter estimate methods for the 2 - parameters weibull distribution and four different estimate methods for failure time based on the life of fixed time measurement are discussed

    在無偏性和均方誤差最小的意義下，得出了上述估計方法的優劣，為定時截尾、定時測試試驗數據下的可靠性分析奠定了基礎。
  15. In the fifth chapter analyses the idgps system for mobile robot. the paper deduces the mathematics modal to estimate the position accuracy of idgps data and to use fuzzy theory according to the hdop and the snr3 to solve the surveying position answer

    第五章全面分析了移動機器人idgps系統，利用模糊數學理論，以衛星幾何精度因子和信噪比為因素，給出了idgps系統輸出數據可信度的模型。
  16. A method to estimate image corresponding and fundamental matrices simultaneously is presented, which reduces wrong correspondings and improves accuracy of estimated fundamental matrices

    為了減少錯誤匹配和提高基本矩陣估計的精度，本文提出了同時計算特徵點的匹配和估計基本矩陣的新方法。
  17. An experienced farmer can estimate the annual yield of his acres with surprising accuracy

    一個有經驗的農民可以以驚人的準確度推測出他的土地當年的產量。
  18. Use the magnetic vector for the observation information, the paper estimate the location and rate of the satellite, analysis of simulation results and the sources of error. to further enhance navigation accuracy, the paper study the unscented kalman filter, compare with the extend kalman filter. in the same initial conditions of the extend kalman filter, we do the simulation

    其次，基於磁環境模擬系統的測量數據，本文研究了擴展卡爾曼濾波演算法，建立了衛星的運動學和動力學方程，以地磁場矢量為觀測信息，對衛星位置速度進行了估計，並分析了模擬結果及誤差來源，為了進一步提高導航精度，本文又研究了unscented卡爾曼濾波演算法，給出了原理及步驟，並與擴展卡爾曼濾波進行了比較分析。
  19. Abstract : it is very important to estimate the basic parameters in helicopter preliminary design. neural network ( nn ) has the advantages in estimating accuracy and generalization over traditional methods. however, there are some difficulties in using nn, e. g., how to select a proper network structure and the number of hidden layers. in this paper, structure and connection weight of a three - layer nn are optimized by genetic algorithm, and the optimized network is applied to helicopter sizing. the proposed method can not only give an optimal nn structure and connection weight, but also reduce the prediction error and has the capability of self - learning when the latest data are available. furthermore, this method can be easily applied to helicopter design systems

    文摘:在直升機初步設計階段估算其基本參數是很重要的.神經網路的通用性和精度比傳統的估算方法有更多的優勢，但是在應用神經網路時存在如何選擇合適的網路結構和隱層節點數目等一些困難.應用遺傳演算法優化三層神經網路結構和連接權重，並將優化得到的網路應用於直升機參數選擇中.該方法不但可以給出一個最優的神經網路結構和連接權重，而且降低了估算誤差，具有及時應用最新數據學習的能力.此外，該方法易於在直升機設計系統中得到應用
  20. A new passive localization estimate algorithm of time difference of arrival ( tdoa ) to improve the accuracy of target localization was proposed, and the ambiguity and unsolvable problem were solved

    摘要給出了新的定位演算法以提高對目標的定位精度，解決了模糊和無解的問題。
分享友人
分享到 Line

分享到臉書