未知參量 的英文怎麼說

中文拼音 [wèizhīshēnliáng]
未知參量 英文
unknown parameter
  • 未 : Ⅰ副詞1 （沒） did not; have not 2 （不） not Ⅱ名詞1 （地支的第八位） the eighth of the twelve ear...
  • 知 : Ⅰ動詞1 （知道） know; realize; be aware of 2 （使知道） inform; notify; tell 3 （舊指主管） admin...
  • 參 : 參構詞成分。
  • 量 : 量動1. （度量） measure 2. （估量） estimate; size up
  • 未知 : unknown
  1. In this paper, we discuss a certain plane quartic system with stellar node : in study, we obtain the global phase portraits of the system, its corresponding algebraic conditions and some results about its structural stability

    至今為止，對系統（ 0 1 ）的比較系統的研究成果基本上還是空白，這主要因為系統的未知參量過多，利用高階奇點理論研究系統全局結構十分困難。
  2. As a result of interference of light, the spectrum distribution of light will change in some condition when it pass through some medium, and the change is determined by the parameter of the medium

    利用光譜儀測量干涉后的光譜分佈，再結合優化演算法擬合測量光譜曲線，反演出光學介質的某些未知物理參數。
  3. This paper also points out the consistency that can be generalized more than one dimension. so, we achieve the large sample property - consistency of this class of model on the fixed design. in this paper, for fixed design points xi ; under the assumption that the unknown function g is continuous function and the moment of random error exists and is finity, we discuss and show that the estimators n, gn and n2 for, g and 2 have strong consistency, p th - mean consistency for more general nonparametric weighted fuction

    本論文在x ；是固定設計的情況下，假定未知函數9 （ ? ）連續，對非參數權函數的條件更為一般和基本，並對隨機誤差e ；的矩的要求有限，討論並證明了在這些條件下， p ； g （ ? ）的估計量札lin （ ? ）及誤差方差a 』的估計量枯相合性和叭三2 ）階平均相合性
  4. In this thesis, based on item response theory, a number of ways to estimate the latent trait and item parameters were introduced and their advantages and disadvantages were analyzed ; what is more, empirical logistic regression and two parameters logistic model ( 2plm ) are combined to set up a linear model by logit - mapping and a new parameter - estimation method is proposed

    新方法將經驗logistic回歸用於兩參數logistic模型的參數估計，使用logit變換建立線性模型，利用線性模型的最小二乘估計得到第j個項目的項目參數向量_ j = （ _ j ， _ j ）的兩步估計由於x _ j含有未知的討厭參數，的理論值也和有關，我們結合上式的結果對進行再估計。
  5. Unlike the normal two stages estimate method ( the usual nonparametric weighted method combined with the least square estimate ), considering the characteristics of this model, this paper uses the least square estimate combining with the usual nonparametric weighted method and defines the estimators and n2 for the unknown parameter, the unkown fuction g ( ) and the unknown variance of errors 2

    與通常採用的兩階段估計方法即非參數權函數法結合最小二乘法不同，考慮到此模型本身的特性，本文採用最小二乘法結合一般非參數權函數估計方法，定義了未知待估參數和未知函數g （ ? ）及誤差方差~ 2的估計量（ ? ） _ n ， （ ? ） _ n （ ? ）和（
  6. 2 ) the identification of the undetermined parameter in the inertial surveying and attitude reference system

    2 ）慣性測量與姿態參考系統中未知參數辨識。
  7. For computation of the unknown parameters ' mle, the em method is applied ; and the number of components is determined by using the gap statistics

    為得到未知參數的極大似然估計，採用了em方法，而子總體數是利用隙統計量確定的。
  8. From the information available for the preparation to be assayed ( the “ unknown ” ), assign to it an assumed potency per unit weight or volume, and on this assumption prepare on the day of the assay a stock solution and test dilution as specified for each antibiotic but with the same final diluent as used for the usp reference standard. the assay with 5levels of the standard requires only one level of the unknown at a concentration assumed equal to the median level of the standard

    根據有效的信息制備試驗溶液，指定一個假定的每單位重量的效價或者體積，然後在假設的基礎制備當天儲備液試驗和稀釋溶液作為每一種抗生素指定的效價，但是當使用相同usp參考標準品的最終稀釋液時，試驗應使用平行5的標準要求僅有一份未知的做為濃度等同於中部的標準。
  9. The new algorithms for classification of mpsk, mask and mqam signals using cumulant invariants are proposed in gaussian noise and ideal communication channel environment. the new classification features are blind to unknown snr and reference phase

    提出了在高斯噪聲和理想通道環境下，基於高階累量不變量特徵的mpsk 、 mask和mqam信號調制分類演算法，新特徵對信噪比和未知的參考相位參數是盲的。
  10. In order to do this, a chaotic system is designed, in which, one of the unknown parameters is the measured value or parameter being estimated. between the parameter and the symbolic series corresponding to chaotic orbits of the system output, there should be a homologous relationship

    基本思想是設法構造一個混沌系統，將被測量或待估的參數作為系統中的某一未知參數，並在該參數與系統輸出的混沌軌道對應的符號序列之間建立起一一對應關系，用符號空間的距離測度來表示參數的變化。
  11. Synthesizing the two identification methods of weighted least square and resricted memory, the mutivariable system recursive estimate algorithems of unknown parameter of autoregressive models in the presence of controlled inputare are given

    摘要將加權最小二乘法和限定記憶兩種參數估計方法相綜合，給出了多變量系統帶控制輸入的自回歸模型未知參數的遞推估計演算法。
  12. A new cumulant based algorithm of estimating signal to noise ratio ( snr ) and reference phase is proposed for likelihood ratio classification of mpsk signals, which is blind to unknown phase order of mpsk signals. the asymptotic statistic distribution characteristics of cumulant function estimation of mpsk signals are given

    針對mpsk信號似然比分類中的參數估計問題，提出了在未知調制類型的前提下，基於累量分析的（對調制類型）盲的信噪比和參考相位估計演算法，並理論分析了累量函數估計值的漸進統計分佈特性。
  13. The measurement function was established by defining single parameter unascertained measurement matrix

    定義參量未確知測度矩陣，確定各測度函數。
  14. The rules of measurement function for grade of target threat were established, evaluate matrix was defined to obtain multi - parameters unascertained measurement

    建立目標威脅等級測度函數規則，定義評價矩陣得出多參量未確知測度。
  15. Though we want to get the optimized values of the unknown controlling parameters in cc process through the surface temperature of the billet, the direct solution is difficult. of course, those unknown parameters have close relation with the surface heat flux of the billet

    由於這些待辨識的工藝參數是與連鑄坯的表面熱流有著密切的關系，所以需要首先利用連鑄坯的表面溫度測量值來計算出連鑄坯的表面熱流，然後再辨識出未知的工藝參數。
  16. One important feature of radio signals ’ is that the signals are easy to catch and to disturb. in order to disturb the radio signals, parameters, including code rate, modulation, protocol, protection methods and channel coding, about satellite ’ s signals should be known. so, it is possible to receive the data from satellites and obtain lots of information from it, and even to destroy the undesired information

    衛星通信系統的遙控遙測信息都是通過無線通道傳遞，而無線電信號的一個很重要的特性就是發射易被接收、易被干擾，實現干擾的前提是對衛星信號參數的極大了解，這包括明確信號的碼速率、調制方式、所用協議、保密措施及通道編碼等，因此，通過接收衛星數據以獲取大量的未知信息，甚至破壞掉對己的不利信息就成為可能。
  17. A new robust adaptive scheme which are used for tracking of this robot with parametric and bounded external uncertainties is proposed in this thesis. the controller is consist of a controller which is proposed by slotine1 ' 1 and nonlinear continued feedback compensation part. by estimating the unknown physical parameters of robot on - line, it can eliminate the effects result by parameters and external disturbances and guarantee gas and uniform boundedness of parametric estimation. the only information required in setting up the strategy is the output states of jionts, while the inversion of the inertia matrix or estimation the bound of the inertia matrix and measure the jionts accelerations are not needed. it is shown by simulations that the proposed control scheme has quicker convergence velocity and better control precision than paper [ 1 ] and control schemes at present

    針對該模型具有參數及有界外部擾動不確定性時提出了一種新的魯棒自適應控制策略，控制器由基於slotine的控制器和非線性連續反饋補償控制器構成。通過在線估計機器人的未知物理參數，有效的消除了由參數及外部擾動所引起的不確定性影響，保證系統達到漸近穩定和參數估計一致有界。與現存的許多控制方法相比，該控制策略不需求解慣性矩陣的逆或估計慣性矩陣的界，不需測量關節加速度，而唯一需要了解的只是系統輸出的位置及速度狀態。
  18. A new biased estimator so - called ridge type - generalized inverse ( rg1 ) estimator is constructed after summing - up the historical and present condition of biased estimation theory in surveying data processing. the prosperities of rg1 estimator are studied especially by pitman ' s criteria. the other biased estimator so - called partial root root ( prr ) estimator is generated

    通過對有偏估計理論在測量數據處理中的應用歷史和現狀進行總結和分析，構造了未知參數的一種新的有偏估計方法? ?嶺型廣義逆估計，對其性質特別是在pitman準則下的若干性質進行了討論；接下來構造了另一種新的有偏估計方法? ?部分根方估計，該估計的最大特點在於它是一種部分壓縮估計。
  19. ( 2 ) using the method of parameter identification in literature [ 117 - 118 ], selecting gain function : giving the initial value of the parameter observer from the time serial of output variables of the system, the numerical simulation result shows that the parameter observer proposed in this paper can identify the unknown parameters of the system quickly and exactly no matter if the parameters keep invariable or change in some rule, and the identifying speed is faster than the method in [ 117 - 118 ], when the unknown parameters are being identified, vith parameter compensator, it can synchronizes two hyperchaotic systems completely even if some parameters mismatch

    （ 2 ）採用文獻[ 117 - 118 ]提出的參數辨識方法，通過選取更一般的增益函數： l _ i （ x _ i ） = kx _ ii = 1 ， 2 ， 3並根據系統輸出變量的時間序列給出參數觀測器的初始值來進行參數辨識，數值模擬結果表明：採用本文的參數觀測器，在系統參數固定或變化的情況下，都可對系統未知參數實現快速高精度辨識，辨識的速度快于文獻[ 117 - 118 ]提出的方法；在辨識參數的同時，結合參數補償器，使兩個參數不匹配的超混沌系統同步。
  20. Then, 8 - error module is established, and the osl ( open + short + load ) method and the slt method which are standard calibration ones and the tls ( thru + line + short ) method which is nonstandard calibration one are obtained on the basis of the error module. good measurement results can be acquired by using nonstandard calibration technology that is proved by experiment. secondly, oddity point maybe appear in the measurement results after network analyzer is corrected by nonstandard calibration technology

    用十二項誤差模型和八項誤差模型的非標準校正方法對測量系統進行誤差校正後，測量結果一般都會出現奇異點問題，且奇異點一般出現在傳輸線傳輸參數x相位的過0點，這可能與這些方法都使用了未知參數的傳輸線有關。
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