等時性誤差 的英文怎麼說
中文拼音 [děngshíxìngwùchā]
等時性誤差
英文
deviation from isochronism- 等 : Ⅰ量詞1 (等級) class; grade; rank 2 (種; 類) kind; sort; type Ⅱ形容詞(程度或數量上相同) equa...
- 時 : shí]Ⅰ名1 (比較長的一段時間)time; times; days:當時at that time; in those days; 古時 ancient tim...
- 性 : Ⅰ名詞1 (性格) nature; character; disposition 2 (性能; 性質) property; quality 3 (性別) sex ...
- 誤 : Ⅰ名詞(錯誤) mistake; error Ⅱ動詞1 (弄錯) mistake; misunderstand 2 (耽誤) miss 3 (使受損害...
- 差 : 差Ⅰ名詞1 (不相同; 不相合) difference; dissimilarity 2 (差錯) mistake 3 [數學] (差數) differ...
- 誤差 : error
-
The paper also does some deep research on the mesh characteristic of the mechanism, analyses the cause o f the cam profile error and index error during working, using object - oriented method, vc + + and pro / toolkit, performs second development to pro / engineer, completes entity proplasm of the cam mechanism using only few parameters, the press angle calculate module, error analysis module and curvature calculate module are built on the basis of it
然後通過對弧面分度凸輪加工中產生廓面誤差及工作時產生分度誤差原因的分析,建立了計算加工和分度誤差的數學模型。應用vc + +和pro toolkit對pro engineer進行二次開發,建立了弧面分度凸輪機構的參數化設計和三維造型及壓力角、誘導主曲率等運動特性和誤差分析軟體系統。In this paper, taking the measured error sound velocity profile as the initial guess value, the sound beam travel times and beam angle recorded by the multi - beam system and the generalized linear inversion method are used to get a sound velocity profile close to the actual sound velocity profile, and the inversed sound velocity profiles have contributed to the reduction of sound velocity profile error
摘要以測得的誤差聲速剖面作為初始猜測值,利用多波束記錄到的波束傳播時間和波束角等信息,通過廣義線性反演得到一個與實際聲速剖面比較接近的聲速剖面,這有助於減少聲速剖面的誤差。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The research result indicated : for the strip primary mirror discussed in this article, the hexagon light - weighted cell has the best structural rigidity quality, the square cell is a little worse, the triangle cell is the worst ; there is an optimum on primary mirror thickness ; on condition of 1g gravity load combining with 4 centigrade uniform temperature rising, the thinner and higher of the flexible support reed, the better of the primary mirror surface figure. the decision of the structural parameters of the flexible support reed must take static rigidity, dynamic rigidity, static strength and dynamic strength of primary mirror assembly into account
研究結果表明:對于本文的長圓形主鏡,採用正六邊形輕量化孔,鏡體結構剛性品質最好,正方形次之,正三角形最差;主鏡鏡體厚度存在最佳值;主鏡組件在1g重力、均勻溫升4共同作用的工況下,主鏡柔性支撐簧片厚度越小、高度越高,主鏡綜合面形誤差( p - v值)越小,但同時主鏡組件的剛體位移增大、固有頻率下降,因此柔性支承結構參數的確定要綜合考慮主鏡的綜合面形誤差和主鏡組件靜態剛度、動態剛度、靜態強度和動態強度等因素。The objectives are to minimize a linear function of total completion time and total variation of completion time, a linear function of total waiting time and total variation of waiting time, a cost function based on earliness, tardiness, window size, window location, and a linear function of the due date, the earliness and tardiness for all jobs
目標函數分別為極小化完工時間和與完工時間偏差和的線性組合,極小化等待時問和與等待時間偏差和的線性組合,極小化提前時間、延誤時間、最早交貨期及窗口長度的加權和,極小化提前時間、延誤時間及公共工期的加權和。Through simulation, the influence of antenna baseline and time error to the algorithm performance is analyzed
通過數值模擬,進一步分析了天線基線,時間誤差等因素對演算法定位性能的影響。With the thorough research on these and computer ability increasing quickly, people are paying more and more attention to relational numerical study. the mostly discussion is how to numerical simulate, concering error estimate in long - time, the existence of approximate attractor, well - posedness of solution and numerical solution and dimension estimate and so on, now there are much study [ 5 ], [ 15 ]. spectral method is important numerical method, but it is very hard so that research is a less
隨著對它研究的深入和計算機能力的迅速提高,與之相關的數值研究也越來越被人們關注,這方面討論的主要是對原系統如何進行數值模擬的問題,涉及到大時間誤差估計,近似吸引子的存在性,穩定性,收斂性及其維數估計等諸多問題,目前已有很多工作。Several materials with large coefficient of expansion were selected to make packaging components, and it was found that the packaging materials have good temperature sensitivity and compatibility with optical fibers. experimental accuracy and repetition of fbg temperature sensitivity and compensation were discussed. have selected several materials which has bigger coefficient of expansion to do packaging components, have made many temperature experiments, there have not flaws, such as aging, crackle, absciss layer, packaging materials have good temperature sensitivity and compatibility with optical fiber ; have designed the simple and practical packaging components, have performed a serials of experiments about accuracy and repetition of fbg wave - length, have obtained the first step conclusion ; have analyzed the result and made comparison between the result of different experiment, have summarized the best packaging effect and several rules to reduce mistskes
本文所做的主要工作包括以下幾個內容:一、選取了常見的熱膨脹系數大的材料製作封裝元件,經過多次一80到80反復測試,封裝元件沒有出現老化開裂、封裝裂紋、空洞、離層等缺陷,封裝材料具有良好的溫敏穩定性及復用性,與光纖相容性較好;二、對光纖光柵進行簡單、實用的封裝處理,就封裝效果的優劣性、波長測量的準確度、重復性和封裝時產生的波長損失等方面進行了一系列的實驗,得出了初步的結論;三、對溫敏和溫度補償式封裝的實驗數據進行了詳細的分析和對比,從數字上對溫變過程中光纖光柵中心波長的改變及溫變曲線進行了定量的分析,在大量實驗數據分析結果的基礎上,總結出哪種材料封裝效果更好,以及如何有效的減小實驗誤差。The paper analyzed the relationship of the scale factors and several main performance indexes of the system ' s respond curve like over - regulation, divergence, surge - degree, steady - state error and transient time, and denoted these indexes by some fuzzy membership functions
溫室溫度響應的主要動態性能指標包括:超調量、系統發散程度、系統振蕩程度、穩態誤差、過渡過程時間等。The localization of mobile object is accomplished by nonlinear kalman filter. based on the formulae of localization errors, the rules are analyzed, which describe the relationship between the localization precision and the constellation factors, such as constellation shape, the height of satellite. the method to design the constellation is presented with the help of these rules
論文利用非線性kalman濾波設計了三星時差定位星座對運動目標的定位定速演算法;根據定位誤差的解析公式,利用模擬方法分析了三星時差定位星座的星座構型和衛星高度等因素對定位精度的影響規律,並依據定位精度影響規律,研究了三星時差定位星座的星座設計問題。The equivalence between the mamdani type fuzzy systems using trapezoid or gauss membership functions and the piecewise interpolation functions is demonstrated. and the estimation of the approximation error is given
對mamdani系統,分析了隸屬函數分別採用梯形和高斯型時一維模糊系統與函數插值的等價性和逼近誤差。Due to temperature performance of fbg, a reference fbg is adopted to compensate temperature and the compensation principle is expounded. moreover, this scheme not only realizes temperature compensation but also reduces repeatability error of ffptf and errors from power fluctuation of light source, noise of pd and noise of electro - circuit. in the end, temperature and strain performance of fbg is tested and
基於光纖光柵的溫度響應特性,提出用一個參考光柵來進行光纖光柵傳感陣列溫度補償的設計方案,並論述了其補償原理,證明了該方法的可行性;同時可以看出,該方法不僅可以實現溫度補償,也可以減小光纖f - p可調諧濾波器的重復性誤差以及光源功率波動、探測器噪聲和電路噪聲等引起的誤差。Point to above problems, under the financial support of the national natural science foundation ( exploration of high tech and new concept and new conceive ), the excellent young teachers program of ministry of education and national excellent doctoral dissertation special foundation, the static and dynamic real - time computation of elasticity - plastic mechanics, solving method of fuzzy finite element and other problems were studied in this paper. and some achievement was gained as following : ( 1 ) based on the positive definiteness of system stiffness matrix of finite element that was modified and the form of potential energy function of elastic body, the linear system of saturation mode ( lssm ) was introduced into the neural computation of finite element, by which the no - error solving of finite element neural net computation was realized in theory
針對上述問題,在國家自然科學基金(高技術新概念新構思探索) 、教育部優秀青年教師資助計劃、高等學校全國100篇優秀博士學位論文作者專項基金等的資助下,本文對彈塑性力學問題的動靜態的實時計算、模糊有限元的求解方法等問題進行了系統和深入的研究,取得了以下成果: ( 1 )根據有限元總剛矩陣經修正後具有正定性的特點以及彈性體勢能函數的具體形式,將飽和模式的線性系統(簡稱為lssm系統)引入到有限元的神經網路計算中,在理論上實現了有限元神經網路計算的無誤差求解。Therefore, aiming at the existent static and dynamic error of fcs sensor, the sensor characteristic compensation subunit is designed in the environment of labview using vi technique. the sensor signal disposal platform is also developed to realize the time domain measurement, frequency domain analysis, long - distance transfer and network release, etc. firstly, the static characteristic and nonlinear error of the sensor are analyzed
為此,本文針對飛控系統傳感器存在的靜態和動態誤差,利用虛擬儀器技術在labview環境下設計了傳感器性能補償環節,開發了傳感器信號處理平臺,對信號進行時域測量、頻譜分析、小波消噪、遠程傳輸和網路發布等。The self - tuning algorithm of the parameter adopts eigenvalue of the systemic error and derivative error and so on. thus this method can overcome the disadvantage of the previous method which make the calibrating date not match up to the moveable track of the system, and improve the adaptability, rapidity and robustness of the human simulating intelligent control ' s algorithm
該方法將誤差、誤差導數等特徵量引入參數在線校正公式,克服了以往採用盲目搜索法時校正量與系統實際運行軌跡不匹配的缺點,提高了仿人智能演算法的適應性,快速性和魯棒性。The algorithm generates three - dimensional terrain model and displays in real time. it uses an efficient and simple method to attain the dependency between sampling points on terrain, and refines the center points in top - down way. it incorporates the dependency of points into their errors so that the cracks inside the terrain block are avoided, at the same time eliminates the cracks at the edges of blocks through adjusting the elevations of those points that cause the cracks
該演算法基於規則格網數據實時生成三維地形模型,並實時顯示;採用了一種簡單而高效的方法來求解采樣點之間的依賴關系;以「從頂向下」方式細分中心頂點;並把頂點依賴關系融合進頂點誤差中,避免了地形塊內部的裂縫,同時通過調整塊邊界點的高程消除了塊邊界處的裂縫;演算法還具有利用幀間相關性,視相關等方面特點。Besides, it owns low error, low temperature - coefficient, and stable performance because its rc constant equals the ratio of two capacitors
另外,由於是用電容比來決定時間常數,具有誤差小、溫度系數低以及性能穩定等優點。The system possesses the real time correcting function, which can avoid error accumulation and highly increase the forecasting accuracy ; ( 3 ) the flood control system can be multiple - scheme designed, that is, the control schemes can be designed in terms of different control ways for hydro - projects. simulated computation can be carried out to obtain multiple schemes that can be used by the leaders for decision making after risk and consequences estimation, so as to scientifically enhance th
系統具有實時校正功能,可以避免誤差累積,極大地提高了預報精度; ( 3 )防洪調度系統可以進行多方案設計,即可以根據水工建築物不同的調度方式來設計調度方案,並進行模擬調度計算,最終生成多個方案,供領導決策,提高了防洪決策的科學性; ( 4 )系統採用的數據均建立在實時雨情、水情、工情和天氣預報等數據庫基礎上,預報、調度均能做到快速及時。That test part of the software is primarily used to complete the test of some parameters, such as time base, time - expand, time interval, voltage interval, vertical, stable state, transient state and scanning linearity. the result of the test needs to be analyzed and judged. clear user interface and timely warnings for mistakes of testing process inside because of the user ' s fault operating make whole test process more easier than it did on a time
該軟體的測試部分主要用於完成對示波器掃描時間系數、擴展掃描時間系數、 t時間測量、 v電壓測量、垂直偏轉系數、頻帶寬度、校準信號、脈沖瞬態響應、掃描線性誤差時等參數的測試檢定任務,並對測試結果進行及時的分析和判斷,由於界面清晰,而且對測試過程中由於用戶的誤操作都有及時的錯誤提示,使得整個測試過程簡單易行,對于用戶來講掌握起來也更為方便些。According to these weak points, the thesis proposes a new nids architecture, and also describes the design and construction of an experimental nids called inids ( intelligent network intrusion dection system ), which performs a real - time analysis on packet traffic sniffed off the network segment using an appropriate mix of expert system for misuse intrusion and data mining technology for anomaly intrusion
針對這些不足和問題,本文提出了一個新的網路入侵檢測系統模型。該模型結合專家系統和數據挖掘兩種智能信息處理技術,以增強模型分析的智能性和對新入侵的適應性。專家系統技術用於誤用入侵的檢測,具有實時性好、檢測結果準確率高等優點,彌補了數據挖掘技術實時性較差的缺點。分享友人