first order error 中文意思是什麼
first order error
解釋
一次誤差-
Its static error is categorized into three types : irrelative with the specific force, relative with the first - order of specific force and relative with the square of specific force
把漂移誤差分為與比力無關、與一次方成比例和與二次方成比例三類。 -
Because of the unique issues in the networks, including mobility - induced disconnection, network partition, high out - of - order delivery ratios and channel errors, the congestion control and the error recovery in the network is challenging. in this environment, the interaction between tcp and mac layer protocols, the affection of route protocols on the performance of tcp and the particular congestion control and error recovery mechanism are first discussed. then a particular transport layer protocol scheme based on the non - feedback mechanism is presented, with emphasis on the analysis and simulation of the key parameter
文中主要討論了兩種不同網路結構中的無線tcp協議改進方案，其一在最後一跳為無線鏈路的網路環境中，針對基本tcp擁塞控制機制存在的缺陷，文中在現有解決方案的基礎上提出一綜合性的方案，其中包括無線鏈路的高誤碼率和連接斷開問題的解決，並重點對方案中出現的交叉層問題進行分析和模擬；其二，考慮的是分散式網路（ adhoc ） ，在文中較為詳細的分析了tcp和mac層機制間的相互作用、路由協議中造成tcp性能降低的因素、 adhoc網路中應採取的特殊擁塞控制和差錯恢復機制，在此基礎上提出了一種採用非反饋機制的解決方案，重點對方案中的關鍵參數進行分析和模擬，分析和模擬結果表明此機制可在很大程度上提高adhoc網路中tcp的性能。 -
We get the sensitivity matrix using the model that contains model error in the following two cases. if the identification data are got using the model without model error before and after the damage, the error resulted from model error can be overlooked. if the data are got using model with model error before the damage and using the model without model error after the damage, error results from model error is first order and model error can bring more assessment errors
2 、本文詳細分析了模型誤差對損傷識別結果的影響，經過公式推導及實例分析說明，損傷靈敏度矩陣用有模型誤差的理論分析模型來建立，如果損傷前後都用無模型誤差的實測數據來識別，此時誤差為二階微量可以忽略；如果損傷前採用有模型誤差的數據而損傷后採用無模型誤差的實測數據，此時誤差為一階量，可能引起較大的識別誤差。 -
Article 17 if a local people ' s procuratorate discovers any error in a judgment or order of a people ' s court at the corresponding level in a case of first instance, it shall lodge a protest in accordance with the procedure of appeal
第十七條地方各級人民檢察院對于本級人民法院第一審案件的判決和裁定，認為有錯誤時，應當按照上訴程序提出抗訴。 -
Data processing is performed by pc ， which includes detecting rough error by quartile method base on first order differential, adopting three points algorithm to eliminate deviations of rack displacement and installation, applying minimum containing area method to evaluate the sectional plane radius of roller and realizing it by genetic algorithm, adopting akima method to fit curve of roll profile
主要的數據處理工作在上位機進行，採用基於差分法的分位數演算法剔除粗大誤差；採用三點式測量原理消除探頭的安裝及運動所產生的誤差；採用最小包容區域法評定軋輥半徑，並應用遺傳演算法實現最小包容區域法的尋優計算；採用阿克瑪插值方法進行輥型的曲線擬合。 -
This dissertation focuses on the application of data fusion in two - phase flow regime identification. following is the main contribution of the dissertation. 1 ) based on quartile and first order differential, a new outlier detection algorithm is presented, experiments show that the method combining with low pass filter can remove gross error and unwanted frequency components
本文的主要工作與創新點在於： 1 ）將分位數方法與一階差分法相結合，提出了一種基於一階差分的粗差剔除方法，該方法與低通濾波器的結合可以有效去除兩相流壓力波動信號中的粗大誤差以及信號頻帶以外的頻率成分。 -
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。 -
The first - order perturbation method correct for forcing decoupling method based on perturbation theory is put forward to decrease error ; iii. the complex modal method is introduced into analysis of non - classical damping systems to eliminate error of forcing decoupling method, and improve the complex modal response spectrum, which can apply to design of non - classical damping systems ; iv. for exerting the energy dissipation capability of each device, a two - step optimum method, whose controlling function is extremum expectation of interbedded displacement, is put forward to optimize the number and position of device ; v. the problem of iterative method applied to analyze energy dissipation systems is indicate, and give some primary advice based on pilot study
為改善上述缺點，本文進行了以下的研究工作：在忽略耗能器附加質量的基礎上，推導出適用於耗能減震結構的攝動法，減少振型分解法在迭代計算過程中的工作量，加快計算速度；針對運動方程的強行解耦所產生的誤差，根據攝動法原理，對其進行一階攝動修正；為消除強行解耦振型分解法用於非比例阻尼結構分析時產生的誤差，引入狀態空間對系統進行復模態分析，並改進了基於復模態理論的、適用於非比例阻尼結構設計的雙反應譜方法；對于耗能器的數量和位置優化進行了一些探討和研究。 -
Abstract : a new variable structure model reference adaptive control ( vs - mrac ) scheme is proposed in this paper. by transforming a relative degree one system into a first - order - like differential equation, it is shown that the spr ( strictly positive real ) assumption for reference model or its modified form ( if plant relative degree n * > 1 ) can be removed and the tracking error can converge to zero in finite time or a small residual set
文摘:提出了一種可具有非嚴格正實參考模型的變結構魯棒自適應控制方案，可去除變結構模型參考自適應控制中普遍要求參考模型為嚴格正實或當相對階大於1時參考模型經補償后為嚴格正實的假設.在此基礎上提出的變結構控制律可保證跟蹤誤差在相對階為1時于有限時間內收斂到零，而當相對階大於1時則可使跟蹤誤差收斂到一個殘差集內 -
In this paper, a class of the second order accurate explicit gauss schemes with staggered grids for the computation of solutions of hyperbolic conservation laws are presented, the advantages of these schemes are : riemann solver - free, faster and programming is much simple, no complete set of eigenvectors is needed and hence weakly hyperbolic system can be solved. in one dimensional case, these schemes are and total variation diminishing and convergence under the restriction of cfl condition, the convergence rate is the first order, and a pointwise error bound is presented
本文在交錯網格的情況下，利用gauss型求積公式構造了一類求解雙曲守恆律的時空一致二階顯式gauss型差分格式，這類gauss型差分格式，具有不需要求解riemann問題、計算簡單、工作量少、編程簡便等優美特點，而且由於這類格式在應用於求解方程組的時候，不需要對方程組進行特徵分解，因此可應用於求解非嚴格的雙曲守恆律方程組。 -
In this paper, the upper - class intelligent control scheme is adopted according to the characteristics of tobacco re - dryer and the present control condition in order to solve the problem that the output tobacco moisture can ? keep stable. that is, to keep the old every pid control link, to add the upper - class computer so that sets up the upper - class intelligent control system that consists of the description management sub - system, the fuzzy compensation on line sub - system and the self - learning system. the following are control procedure : first of all, a series of output values of description can be obtained by the forward inference of basic controller on the basis of the information of input tobacco, then, these output values can be adjusted by the fuzzy compensation controller with inquiring the fuzzy control - list on line in the light of the output tobacco moisture error
本文針對烤機的工藝特點和目前控制現狀，提出用上位智能控制的方法解決烤機目前存在的問題，即在保留原有各段pid控制的基礎上，增加上位計算機，建立起由配方管理子系統、模糊在線修正子系統和自學習系統組成的上位計算機監控、決策的智能控制系統；控制過程為：基本配方控制器根據來料信息正向推理提供煙葉復烤機各段參數設定值的基值；模糊補償控制器根據煙葉水分偏差在線查詢模糊控製表提供相應參數設定值的修正值，實現煙葉復烤機參數的在線修正；學習環節的引入實現煙葉配方的在線優化。 -
Using the first order and the second order derivative information of the network error function to the learning rate factor / / and the momentum factor ?, dynamic optimization of the learning rate factor / / and the momentum factor ? is obtained during the network training process, which efficiently speeds up the network learning rate
並利用網路誤差函數對訓練速率系數和沖量系數的一階和二階導數信息，在網路訓練過程中動態優化調整訓練速率系數和沖量系數，有效地加快了網路的訓練速度。 -
The noise estimation theory of the gps / ins integrated navigation system and the error analysis is are systematically discussed in this dissertation. at first the paper briefly introduce the error of the integrated system and the cause of the error, and give an estimation model of the error. in order to solve the precise estimation of the error using artificial neural network, then an artificial neural network model is discussed
本論文首先介紹了gps慣性組合導航系統的誤差和誤差模型，綜述了gps和慣導系統的誤差和誤差來源，給出了這兩種導航系統的誤差方程，討論了導航系統中常用的數據處理方法?卡爾曼濾波，給出卡爾曼濾波的基本方程，深入研究了卡爾曼濾波在組合導航系統數據融合中的應用。 -
And in allusion to the shortcomings on the fitting of noises by least square, a new procedure is presented to modify the estimations of model parameter of the noise. it can control the effects of the correlation noise of except for first order self - correlation noise. using the model the error of gps / ins integrated navigation system is estimated
再次，針對卡爾曼濾波方程的前提條件不滿足而影響導航系統的精度的問題，應用時間序列分析理論提出了一種改進的噪聲模型參數估計演算法，對此演算法進行建模，模擬結果表明，該演算法能有效的控制一階自相關特性以外的噪聲對參數模型估計的影響，提高卡爾曼濾波精度。 -
The cyclic estimation approaches of chirp signals in additive nose or multiplicative noise are proposed, it presents a way for the parameters estimation of zero mean amplitude chirp signals. the estimation performances in the additive noise or multiplicative noise are analyzed by the first order perturbation analysis method, and the error variance expressions of the parameters estimation under large samples are derived
針對加性噪聲情況及存在乘性噪聲的情況，提出了線性調頻信號參數的循環平穩估計方法，解決了零均值乘性噪聲的信號參數估計問題，並採用一階擾動分析方法，對兩種噪聲情況下的估計性能進行了分析，推導出了各參數的估計誤差方差公式。 -
The presented dissertation mainly discusses the non - linearity existing in monostation and multistation radar measurement. the first part of this dissertation integrated the non - linearity with the uncertainty of measurement system, and presents a secondary order filter for correcting measuring variance while the measurement equation is non - linear. by comparing the filter error of extended kalman filter with that of secondary order filter, we find the filter performance of these two filters are almost same
本文主要討論單站與多站雷達中的非線性測量問題，在1中，我們把測量系統的非線性與測量系統的不確定性聯系起來，針對只有測量方程是非線性的情況，給出了一種修正測量方差二階濾波器，並用這種二階濾波器分析了推廣kalman濾波器的濾波誤差，指出推廣kalman濾波器與二階濾波器相比，濾波性能幾乎相同。 -
In this paper, we first focus on the anisotropic finite elements and construct a hermite rectangular finite element which can be applied in 2nd order elliptic problem. lt is proved that this finite element has anisotropic property and its error estimate is obtained without the limitation of regularity conditions
本文首先對各向異性有限元進行了研究，構造了一個用於二階問題的hermite型矩形元，證明了該單元具有各向異性特徵，並且給出了與剖分的正則性無關的誤差估計。 -
Abstract : in this paper, the authors study the initial value problems of a class of weakly nonlinear differential equation. the first and the second order approximate solutions are obtained. their accuracies are high and the more the approximate order is high, the more the accuracy is high. if the regular perturbation method is used to solve the same problems, then, when the independent variable is big, so is the error of the solution
文摘:用插值攝動法1研究一類弱非線性常微分方程的初值問題，得到了一級及二級近似解.解的精度很高，並逐級提高.如果用正則攝動法求解此類問題，則當自變量較大時，誤差很大 -
Article 181 if a local people ' s procuratorate at any level considers that there is some definite error in a judgment or order of first instance made by a people ' s court at the same level, it shall present a protest to the people ' s court at the next higher level
第一百八十一條地方各級人民檢察院認為本級人民法院第一審的判決、裁定確有錯誤的時候，應當向上一級人民法院提出抗訴。 -
This paper analyzes the principle, error sources and precision of triangulated height surveying, points out the key problems about first order leveling replaced by triangulated height surveying ; and for the first time puts forward that in some given conditions, it is not only feasible but also valuable to replace first order leveling by precise triangulated height surveying, and proves it by experimentation as well
摘要通過對三角高程測量的原理、誤差來源及精度分析，指出了用三角高程測量代替一等水準的關鍵問題，第一次提出了在特定條件下用三角高程測量代替一等水準是完全可行的，並在生產實踐中得到了驗證。
分享友人