system accuracy model 中文意思是什麼
system accuracy model
解釋
系統精度模型-
In this paper, ackerman steering linkage of double - wishbone suspension is taken as the study object, choosing the splitting joint and steering lever joint to carry out the design of optimization the mathematics models are established based on the multi - body system dynamics, applying its analysis method of kinematics to study the mechanism kinetic principles owing to more spatial factors considered, and calling off many hypotheses affecting the accuracy, compared with the traditional methods, the models are better to reflect the realistic motion principles, the results are more exact and applicable moreover, the force analysis is applied to the conduct mechanism the analysis method of dynamics in the multi - body dynamics is applied to study the forces applied on every component, working out the constraint reaction force of up and down ball joints, and developing the current computation program in the end, produce the upper wishbone geometry model in the ansys software package, meshing and carrying out the fea, testifying if the intensity of the wishbone meet with the requirements
本文以雙橫臂獨立懸架的轉向傳動機構作為研究對象，選擇對斷開點和節臂球銷的位置進行優化設計，在此基礎上建立了基於多體系統動力學的導向機構和轉向傳動機構的數學模型，運用該學科的運動學分析方法研究機構的運動規律，編制了通用優化設計軟體。由於考慮了更多的空間因素，取消許多影響準確性的假設，因此建立的數學模型與傳統的方法相比更能反映實際運動規律，得到的優化結果也更加精確實用。此外，本文還針對導向機構進行受力分析，在建立該機構的空間動力學模型后，運用多體動力學中的動力學分析方法研究各個桿件的受力，計算出上下球鉸的約束反力，並開發出了相應的通用計算程序。 -
In order to improve the efficiency of classification based on feature matching, the method of azimuth estimation from sar image is studied. a method of target ' s azimuth estimation from sar image using peak featur e based on linear regression is proposed, besides goodish estimation accuracy and high computation efficiency, it can also provide the confidence interval of the estimation, which can meet the need of model - based sar atr system that uses feature very well
為了提高基於特徵匹配的saratr系統的分類效率，論文進一步研究了sar圖像目標方位角估計方法，提出了一種利用峰值特徵基於線性回歸的sar目標方位角估計方法，該方法除了具有計算速度快、估計精度較高的特點之外，還能在估計方位角的同時，給出該估計的置信區間，從而能更好地滿足利用特徵基於模型saratr系統的需要。 -
Methodology for absolute measurement is proposed by using an outside installation mechanism in laser tracking measurement system, which has an important reference value in practicality in high accuracy assembly and inspection of large - scale mechanical field. spherical tracking servo mechanism " s model described in this paper not only is a new thought but also have much reference value in the mechanical design and other industrial machines design
本文提出的外置式激光跟蹤測距系統應用於無導軌曲線測量的設計方法在大型機械現場組裝與安裝中具有較高的參考價值和實用價值，提出的球形跟蹤伺服機構的設計思想，不僅簡化了伺服機構，對跟蹤伺服機構的設計提供了新思路，而且對機器人設計及其他工業領域機構設計都具有一定的參考價值。 -
Measurement precision contribute to improving the security class and economic of boiler running and automatic level of whole plant. the smart measurement instrument of the boiler ’ s air flow designed in the thesis and the instrument can make the degree of accuracy get to. firstly, the thesis build the “ velocity - area ” method which is on basis of “ log - tchebycheff ” on the analyzing of basic measure method of boiler ’ s air flow. secondly, model86 averaging pitot tube was selected the right model of flow transducer which can pickoff the differential pressure and static pressure. modelc264 which made in setra system corp. u. s. a was selected as ultra low differential pressure transmitter. a good flow of boiler ’ s air was calculated by offsetting pressure and temperature. finally, numeroscope was designed with z80cpu and other chips
精確的監測有助於提高鍋爐燃燒的安全型、經濟性，也有助於提高電廠的整體自動化水平。本文設計的智能化鍋爐風量測量裝置能夠實現對鍋爐送風的精確測量，精度可達。本文首先研究鍋爐送風矩形大管道測量理論，提出在流來流量測量測點布置基於「對數-切比雪夫」法的速度-面積法。 -
To improve the accuracy of node trust evaluation in a distributed network, a trust model based on the experience of individuals is proposed, which establishes a new trust assessment system by introducing the experience factor and the comparative experience factor. the new evaluation system considers the differences between individuals and interactive histories between nodes, which solves the problem that nodes have inaccurate assessments due to the asymmetry of nodes to a certain extent. the algorithm analysis indicates that the new model uses different deviating values of tolerance evaluation for different individuals and uses different updating values embodying node individuation when updating feedback credibility of individuals, which evaluates the trust value more reasonably and more accurately. in addition, the proposed algorithm can be used in various trust models and has a good scalability
為了提高分散式網路中各節點信任評價的準確度，提出了一種基於個體經驗的信任模型.該模型通過引入經驗因子和相對經驗因子的方法，建立了新的信任評價體系.這種新的信任評價體系考慮了個體節點的差異問題，在計算節點的信任值時考慮了節點間的交互歷史，這在一定程度上解決了由於節點的非對稱性而導致的信任評價不準確的問題.演算法分析表明:新模型能夠針對不同的個體節點，採用不同的最大容忍評價偏差，並且對個體節點的反饋可信度進行更新時，採用不同的更新值，體現了節點的個性化特徵，使信任評價更加準確合理.此外，所提出的新演算法能夠運用到多種信任模型中，具有很好的可擴展性 -
First of all, the assembly model of dfa is established and the data structure of the model is proposed ; in order to redesign product and structures and select optimized assembly plans, an assemblability evaluation system is constructed. secondly, assembly process planning is analyzed, including assembly path planning and assembly sequence planning ; and then the thesis brings forward the way of 11 - tuple to represent the movement of assembly / disassembly of assembly elements. in the end, this paper makes an research on the technology of interference checking, raised a kind of algorithm of swift interference checking based on envelops bounding box decomposition, hence, the accuracy and efficiency of the algorithm is improved dramatically
首先建立了面向裝配設計的裝配模型，給出了它的數據結構；接著從面向產品結構和裝配工藝過程兩方面再設計的角度，構建了裝配性評價體系；接著闡述裝配工藝規劃技術，包括裝配路徑規劃和裝配順序規劃；然後提出了11元組法來表示裝配元件的裝拆運動；最後對干涉檢驗技術進行了研究，採用一種基於包容盒逐層的快速干涉檢查演算法，提高演算法的精度和效率。 -
In collaboration with the department of physicis and material science of the city university of hong kong and the electronic and engineering department of the chinese university, the faculty of medicine has conducted research on different aspects of computer - aided navigation such as brain shift prediction with finite element model, three - dimensional ultrasound based correction for brain shift, accuracy verification, robotic system, surface identification and matching
通過與香港城市大學物理及材料科學系及香港中文大學電子工程學系的協作，我們正發展電腦輔助的神經導航技術的多方面研究，例如，採用有限元模型預測腦偏移；除去腦偏移的誤差的立體超聲檢查技術；手術準確性的證實；腦表面區域的定位。 -
Through the simulation and error comparison between classics regression model and neural network model, it showed that bp should be applied in liquid concentration measurement system to improve measurement accuracy and decrease the non - linear effect from temperature
通過模擬研究，與傳統的回歸模型進行誤差對比，得出了應採用bp神經網路技術建立智能化液漿濃度測量模型，提高測量精度，克服溫度變化非線性影響的結論。 -
The computation results showed that the multi _ body system model was accuracy, the fuzzy _ pid compound control scheme was compact, both was just combined well, and this system had a good performance on improving the vehicle ' s ride comfort characteristics
計算結果表明，以多剛體系統動力學的拉格朗日方法所建數學模型模擬精度高，計算效率高，方法可行，多剛體系統動力學模型同模糊pid復合控制策略結合較好，是一個行之有效的進行綜合模擬和優化控制的系統。 -
( 5 ) establishing the measuring metallographic expert database with multi - modes express, obverse - contrary deduce method, fuzzy mathematical model pattern matching based on regulations. its reliability, accuracy and reappearance can satisfy requirement of quantitative analysis of metallographic microstructure. the system has great theoretical and practical significance in setting up quantitative relation among the composition, microstructure and mechanical property, selecting appropriate material, customizing suitable process and developing quantitative metallographic
廣東工業大學工學碩士學位論文利用本系統對金相組織自動分析的可靠性、準確性能滿足一般定量金相分析的要求;它對于建立金屬材料成分、組織與性能之間的定量關系、合理地選擇金屬材料、制定合適的加工工藝、發展定量金相都具有重要的理論意義和使用價值。 -
The focus of this thesis is the application of motion vectors of mpeg stream and skin - color model to the pretreatment of the face detection a detailed discussion on related theories of digital image processing is presented. then a fast and robust face detection algorithm is proposed at last, a prototype application named with " golden eyes face detection system " is designed with vc6. 0 to verify the validity and accuracy of the algorithm. at the same time, major functions of digital video record ( dvr ) are implemented in the system too
詳細討論了在人臉檢測過程中涉及的有關數字圖像處理理論，提出了一種視頻運動圖像中快捷、魯棒的人臉區檢測演算法，並用vc6 . 0開發了一套原型程序「金睛人臉檢測系統」驗證了這一演算法的有效性和檢測精確率，同時實現了數字視頻錄像（ dvr ）的主體功能。 -
This system adopts cumulatively autoregressive moving average model [ arima ] of time series method and modified model gm ( 1, 1 ) of grey system, makes a local load forecasting modeling through the integration of the above two models and also preprocesses the daily load during the sudden change of climate, thus greatly improving the forecast accuracy. the practical operation indicates that the model is reasonable and easy to operate with complete function
本系統在經過反復試算后，在演算法上採用了時間序列法的累積式自回歸動平均模型（ arima ）與灰色系統中的gm （ 1 ， 1 ）改進模型，並將兩種模型組合用於該地區負荷預報建模，另外還對氣候急變日負荷進行了預處理，大大提高了預報準確度。 -
It is verified by the observed data of xianing port area in changsha city that the model is of high accuracy, with the greatest relative error of the peak flow of only 7. 85 %, thus can be used in runoff simulation of harbor rainfall drainage system
經長沙市霞凝港區的實測資料檢驗，證明該模型在港區小流域的雨洪分析中有較高的精度，洪峰流量最大相對誤差僅為7 . 85 % ，可用於港區雨水排水的徑流模擬。 -
Heat fluxes estimated from radiative temperature by this model is more accurate than other regular corrective methods. two - layer model has been proposed for many years but was difficult to apply in remote sensing because component temperature were unavailable in traditional thermal sensors. a new airborne multi - angular thermal sensor system and retrieved soil and canopy temperatures were used to solve two - layer model, and the simulated heat fluxes show much better accuracy than the results from one - layer model especially above dry surfaces
雙層模型雖然提出很多年了，但在應用中一直存在信息不足，求解困難的問題，本文用最新多角度熱紅外遙感數據? ? ? amtis系統反演的組分溫度，首次實現了雙層模型在遙感中的應用，結果表明，在輸入參數精度相近的情況下，雙層模型模擬的通量誤差遠小於單層模型，尤其在土壤乾旱，表面溫度較高的地表，雙層模型的理論優勢在計算中表現得更加突出。 -
According to the case that the macrocosmic system is nonlinear and lack of testing data, the improved forecasting methods are proposed such as fuzzy exponential smoothing forecasting, center approaching gray prediction and the local multiple regression fuzzy ( lmrf ) model based on takagi - sugeno fuzzy logical system. these improved methods are applied into the forecasting instances. the prediction accuracy of the stimulation result is testified and the improved forecasting methods are proved much better than conventional forecasting methods
本文從宏觀角度和基於區域交通流小樣本數據的實際情況，提出了改進的模糊指數平滑預測和中心逼近式灰色預測方法，建立了基於takagi - sugeno模糊邏輯推理的局部多元回歸模型（ lmrf模型） ，並進行了實例預測模擬，實例模擬結果表明改進的預測方法比傳統的預測方法精度提高了好多倍。 -
This article analyzed the system of the whole characteristic of the drumshaped gear with ring - involute teeth mechanism. thought of the influence of manufacture ’ s precision and the assembling accuracy to the design of mechanism ’ s steady and the system of control, we used the dynamics simulation software adams to analyze it on the base of establishing the 3d model and entity model. so we can get some property curved shape about it
本文還對漸開線柱齒鼓形齒輪傳動機構的整體動態特性進行了系統分析，考慮了加工精度和裝配精度對運動裝置的穩定性及裝置控制系統設計的影響，在建立了該齒輪傳動機構的三維模型和實體模型的基礎上，利用動力學模擬軟體adams對傳動模型進行了動力學和運動學分析，得出了整個裝置運動的一些動力學特性曲線。 -
The robust system can prevent abnormal factors from entering the flood system, so as to ensure the stability of the system and the accuracy of flood forecast. firstly, the theory of robust estimation is introduced into parameter estimation of the auto - regressive model ( ar model ). also some estimation methods commonly used, including the huber estimation and igg estimation, are introduced and compared with the least square method ( lsm )
洪水預報系統的抗差性研究，就是把抗差理論引入洪水預報中，利用抗差系統具有的抗差能力，使許多嚴重的不正常因素誤差影響，根本就不能進入系統，這樣，減少了系統的污染機會，降低了不正常因素的影響，可大大提高系統的穩定性和洪水預報的精度。 -
After the comparison of the merits and faults between fourier spectrum analysis method and wavelet - neural network analysis method, the latter is selected. after the research on the principle of accuracy - loss diagnosis of the dynamic measurement, the diagnosis theory and method are advanced. according to the error model established of the dynamic system and the results of the error tracing, using bp neural network, the accuracy - loss law of each inner unit is acknowledged
對于實際進行誤差分解與溯源的信號處理方法，在比較了譜分析方法與小波神經網路分析方法的優缺點之後，指出譜分析方法的分解結果不夠理想，並最終確定用小波神經網路來進行實際測量系統的誤差分解與溯源。 -
Target state estimater ( tse ) is an important and indispensable part of integrated flight and fire control system ( iffcs ). this article takes the ground mobile object as the study model. it established the system state equation and observation equation from the perspective of promoting system accuracy, simplifying the calculation and facilitating the engineering realization, the tse was set up by using the kalman filtering calculation method in the wake of linearizing the observation equation to make it adapt the precondition
目標狀態估計器是綜合飛行/火力控制系統中的一個重要組成環節，本文以地面機動目標為模型，從提高目標估計精度、簡化計算以及便於工程實現為出發點，建立目標的狀態方程及觀測方程，並對其進行線性化，利用自適應卡爾曼濾波演算法構造目標狀態估計器。 -
According to the actual situation and performance requirements, how to impair the influence of the disturb torque and the uncertainty of the system object model and how to improve stabilization and tracking accuracy are the principal difficulties in this paper. to solve these problems, a method by using mutative - plus and high - order compensation is brought forward and design by adopting h mixed sensitivity method in the velocity loop, then the weighting function selection is discussed, and the concrete selection principles are given in details
根據本系統的實際工作情況和性能指標要求，通過分析指出，如何克服機（艦）載條件下干擾力矩的影響及系統對象模型的不確定性是本系統中提高穩定精度和跟蹤精度要重點解決的問題，針對這一問題，提出了在速率穩定環採用變增益的串聯高階校正設計控制器和利用h _混合靈敏度方法進行控制器設計的方法，詳細討論了加權函數選擇的問題。
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