正動量誤差 的英文怎麼說
中文拼音 [zhēngdòngliángwùchā]
正動量誤差
英文
positive momentum error-
On the part of the design of nine - component thrust vector stand, an automatic hydraulic pressure original position calibration system, a scheme of original position calibration, and the great rigidity universal flexible combinatorial underprop are designed. by using the scheme of “ universal flexible combinatorial underprop plus software digital filter ”, the inherent frequency of test stand is improved, and the problem of test stand libration is solved. then, the resolving method of the disturbance between underprops of the moveable frame is proposed, and the disturbance revise equation is deduced
在推力矢量試車臺設計方面,設計了自動液壓原位校準系統、原位校準方案以及大剛度萬向柔性組合支撐;採用「萬向柔性組合支撐+軟體數字濾波」的方案,提高了試車臺動架的固有頻率,解決了試車臺動架的振動問題;提出了動架約束互擾問題的解決方法,推導了互擾修正方程;研究了九分力推力矢量測量誤差分析方法,並計算了推力矢量測量精度。Secondly, in phase unwrapping to overcome the spread of wrong point, changing the patch of unwrapping phase is done to improve the correctness of it. then, the relation between the unwrapping phase and the height of reconstructed object is discussed detailedly. the data processing, algorithm analysis and reconstructing object are done for the collecting fringe image which are all based on matlab language, in all these achievements, the improvement and innovation aspect are following : a ) in order to stabilize the interference fringe, a new equivalent shifting object method is presented by using fringe stabilizing device to stabilize the interference fringe though moving object and ccd camera which fixed on a precise moving platform together, the experimental result shows the fringe drift is less than a / 20 in five minutes, and the equivalent phase shifting precision is x / 100
論文在全面闡述了光學三維輪廓位相測量術的發展、應用現狀、研究熱點及未來發展趨勢的基礎上,簡要介紹了傅立葉變換和相移位相輪廓測量術的基本原理,對兩種測量方法存在的問題及誤差進行詳細分析和比較;針對位相解包裹錯誤點的傳播問題,作者通過改變解包裹路徑來提高位相解包裹的正確性;分析討論從解包裹位相( x , y )到再現物體的高度h ( x , y )物理量之間的關系,研究相應的演算法,利用matlab平臺,對實際採集的條紋圖像進行處理和輪廓重構,其中改進及創新工作主要表現在以下兩個方面: ( a )針對干涉型結構光場干涉條紋出現的漂移抖動對相移的影響,提出了一種用條紋穩定器穩定干涉條紋,用精密移動平臺使物體和ccd攝像頭同步移動實現等效相移的方法,建立了相應的測量系統,系統的條紋穩定可以達到。Adding momentum item while correcting weight and limiting range of input value reduce error and improve diagnosis correctness greatly. while normalizing the input value, a new way is put forward that normalization is performed item by item according to its sort. in this way error training can avoid going into the flat field that is caused by existing of 0 or 1 of the input value
本文首先分析了故障診斷和神經網路的基本理論,並在此基礎上提出了神經網路對于變壓器故障診斷系統的適用性;文中將bp神經網路演算法用計算機實現;並針對其本身存在的一些缺點提出了一系列改進措施,通過在修正權值的時候增加動量項,並且限制輸入值范圍來減小誤差、提高系統的診斷正確率;在對輸入數據進行歸一化處理的時候,採取按類逐項歸一化的方法,避免了輸入數據出現0或者1而使訓練進入平坦區。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。In order to make the sensitivity of 2 - demension accelerometer along the two main arbors almost identical, symmetric four - beam structure that embeds a double - sides interdigitated differential capacitive with puckered beam in two directions was used as sensitive component. in addition, the differential capacitive accelerometer fabricated by bulky silicon micromechanical technique has high sensitivity, wide measurement scope, less nonlinear error, and simple converting circuit. then, the structure parameters of the sensitive component were calculated and stimulated, which results in a set of the optimized structure design parameters, main fabrication procedure and several key fabrication technology
為使二維振動傳感器在兩主軸方向的靈敏度大致相同,敏感元件採用高度對稱的四梁結構,其中每個軸向上均採用帶折疊梁的雙側叉指電容結構,採用體硅微機械工藝製作的高深寬比叉指電容式敏感元件,具有高靈敏度、寬量程、非線性誤差小、外圍電路簡單等優點;對設計的敏感元件結構參數進行了計算,並利用有限元法進行了模擬分析,根據模擬結果得出了優化參數;在確定敏感結構的基礎上,研究了敏感元件採用體硅微機械加工工藝製作的工藝流程和關鍵工藝技術;對敏感晶元內部的c - v介面電路進行了原理設計與分析,利用差動測量技術得到由振動引起的微小電容變化量,經c - v介面電路進行相位調制處理,然後通過解調輸出與加速度成正比的電壓信號。Two types of alignment algorithms on moving base were put forward in this paper, one with angular velocity matching, and another with acceleration matching. the error models and measurement models in consideration of ship flexure and lever - effect were deduced respectively. the alignment methods were verified by simulation
提出了兩種動基座傳遞對準的方法,一種是採用角速率匹配,一種是採用加速度匹配,並分別推導了在考慮船體變形和桿臂效應時傳遞對推的誤差方程和量測方程,通過模擬驗證了這兩種傳遞對準方法的正確性。The errors of system and parts of units of the laser imagesetter have been tested, analysed and connected in dynamic balance and also the errors of the laser scanner, reason and source for their generation, and other factors have been analysed and studied
在照排實驗中對整體、單元部件產生的誤差對照排質量的影響進行了分析、實驗,校正(動平衡)等,並對試驗過程中掃描器產生的誤差、來源、原因、及其綜合因素進行了分析和研究。In this paper, the framework error of the system is analyzed quantificationally, and other errors as mechanical distortion error, thermal distortion error, detect error and dynamic error are analyzed qualitatively
本文對非正交坐標系機械繫統的機構誤差做了定量分析,另外對其它的誤差因素也做了定性的探討,如力變形誤差、熱變形誤差、探測誤差和動態誤差等。The algorithm, basing on convolution filtering technique and the fringes " gray values max - min distribution, can automatically and accurately carry out space frequency spectra shifting without spectra analysis and spectrogram in the technique of phase method of projected grating for 3 - d object shapes measurement. the new algorithm makes image processing much caster and the technique of object shapes measurement more automated. the phase error caused by filtering and the crossed - optical - axes geometry setup is also discussed
本文採用投影光棚相位法和數字卷積濾波技術:根據柵線的條紋灰度值分佈具有極大極小分佈的特性,提出卷積濾波形貌光學自動檢測的圖像處理方法,有效地實現了頻譜自動移位,從而進一步提高了圖像處理的速度和形貌測量技術的自動化程度;同時對採用兩光學主軸相交,且非遠心投影系統所產生的誤差進行了分析,並提出了修正方法。A resolution method in software is applied to calibrate zero point and full scale of the circuit. software approach to nonlinear correction for sensor and circuit is presented. therefore system error is eliminated, and measurement accuracy of temperature is improved. the signal of acidity electrode is detected by a differential amplifier circuit, which consists of operational amplifiers tlc2254 with high input impedance and low drift
採用橋路和單運放差動放大電路對溫度傳感器信號檢測放大,軟體校正溫度傳感器和測量電路的非線性,軟體校準測量電路的零點和滿度,消除測量電路的系統誤差,提高補償溫度的測量精度;採用高阻、低漂移運放tlc2254組成高阻差動放大電路用於酸度電極信號測量。Lyapunov exponent depict the discrete extent of chaotic dynamic system. there propose an estimation of one step prediction error based on lyapunov exponent, the estimation express the reliability of prediction numerically. at the same time, in order to improve the predictive precision it drew out an error complement methods creatively to correct one step prediction
Lyapunov指數定量刻畫混沌離散動力系統的平均發散程度,基於lyapunov指數作出了一步預測的誤差估計,以此來定量反映預測的可靠性;根據奇異吸引子流形的性質,創造性的提出殘差補充法,對預測值作出修正以降低誤差,提高預測精確性。This thesis analyzed various error resources in gps surveying and advanced appropriate correction measures ; it introduced theory and method that estimate parameter in reliability study, and then, deduced adjustment mathematic model of gps network ; based on analyzing characteristics of reliability study of gps network and outlier analysis, it carried profoundly out study on issue about reliability of gps network, deduced and summarized target of reliability of gps network, including redundant observation component of gps baseline vector and inside & outside reliability index, advanced a theory about reliability of gps network based on correlative analysis, and summarized methods that improve reliability of gps network ; it worked out a software of reliability analysis about gps observation, which made reliability analysis automatic and convenient
論文分析了gps測量中的各種誤差來源,提出了相應的改正措施;介紹了可靠性研究中參數估計的理論和方法,進而推導出gps網平差的數學模型;在分析了gps網可靠性研究和粗差分析特點的基礎上,對gps控制網可靠性問題進行了深入的研究,推導總結出了gps網可靠性指標,包括gps基線向量的多餘觀測分量、內部可靠性和外部可靠性指標,提出了基於相關分析的gps控制網可靠性理論,總結出了提高gps控制網可靠性的措施;編制出了gps觀測數據可靠性分析軟體,使可靠性分析自動方便。For example, w. rostow considered that the growth of economy was aroused by leading industry, and industrial structure took a very important role in the economy growth ; h. chenery considered that industrial structure and economy growth had a bidirectional causal relation ; however, the most influencing theory was brought forward by s ? kuznets, who considered that it was economic growth which caused the variance of industrial structure advancement, etc. according to cointegration theory and granger causality theory, this paper, based on the summary of multitudinous scholars ’ research literature, carries a positive analysis to the relationship between industrial structure and economic growth, using the time serial data from 1978 to 2003 by
分析結果驗證了配第?克拉克定律的正確性即經濟的增長是就業人口向第三產業轉移的原因,但卻否認了庫茲涅茨的收入決定論,即至少在我國,產業結構的演進是經濟增長的原因而不是相反。同時,本文還原創性地論證了,我國的經濟增長與產業結構之間存在惟一的動態均衡關系即協整關系,產業結構與經濟增長之間短期波動與長期均衡關系存在於根據協整方程建立的向量誤差修正模型之中。In addition, a creative dielectric loss measuring method - enhanced orthogonal arithmetic method was presented based on the flexibility design of the monitoring system
進行了軟體誤差模擬分析,針對系統頻率波動帶來的測量誤差,提出用改進的正交演算法測量介質損耗的方案。First, the error transfer characteristic among subsystems at different space locations is analyzed, and the direct transfer characteristic from discrete standard measure space to the workpiece measure space under measured in measure system is proven. second, the error reconstruction condition and method of mapping from discrete standard measurement system to continuous standard measure space are analyzed. based on the measurement sample stationarity in limited distance, the prediction model ' s limited astringency and mensurability to the dynamic measuring error and the prediction error respectively are proven
分析了不同空間位置子系統間的誤差傳遞特性,證明了在測量系統中離散標準量值空間向被測量工件量值空間的直接傳遞性;分析了離散標準量系統向連續量值空間映射的誤差重構條件和方法;基於測量樣本的有限距離的平穩性,證明了預報模型對動態測量誤差的有限收斂性和預報誤差的可測度性,進而證明了以離散標準量值系統對被測工件預報修正的可行性和合理性。Finally, a new 3d surface ranging method based on a digital fringe projection and shifting technique is systematically studied and non - linear rectification algorithms which reduce measurement error is proposed. at the same time, the noise - immune phase unwrapping algorithm is deeply studied and a new algorithm for phase unwrapping of phase map is proposed. experiment make known the algorithm can reduce measurement error, bypass the noise points automatically, solve the problem of the shade sheltering or cavity, overcome the error propagation problem and better results have been obtained
論文最後系統研究了基於數字相移條紋投影曲面三維測量方法,創造性地提出了一種減小測量誤差的非線性校正演算法,取得了預期的效果;同時對相位去包裹演算法進行了較深入研究,提出了一種噪聲圖像相位去包裹方法;實驗表明該方法能減小非線性測量誤差,自動避開噪聲點和間斷點,獲得了滿意的結果。The dual standard quantity ( the work piece and the discrete standard quantity ) mutual measuring and model verification methods are also proposed, which perfects the whole modifying process from data measuring, error separation, model establishment to real correction. after researching the discrete standard quantity system dynamic error separation technique, two error correction methods based on genetic algorithm and neural network mixed modeling technique are established. the two methods are the discrete standard quantity dynamic error direct / synchronous correction and prediction model correction ; the model ' s parameters and model ' s exercising method are also confirmed
設計了雙標準量值(工件和離散標準量)互比測量的模型驗證方法,完善了從數據測量、誤差分離、模型建立到實際修正的整個修正過程;研究了離散標準量系統動態誤差分離技術,建立了基於遺傳進化演算法與神經網路混合建模技術的兩種誤差修正方法? ?離散標準量動態誤差直接(同步)修正方法和預報模型修正方法,並確定了模型結構參數和模型訓練方法;分析了預報模型的多次預報性質,並得出了多次預報與多步預報的等效關系,確定了測量系統的有效預報范圍以及模型參數對泛化誤差的影響;進行了模型的對比實驗驗證和被測工件動態誤差修正試驗,成功地實現了任意二面角和圓分度的實時誤差修正。Based on the foundation of vector error correction model, this paper applies impulse response function and variance decomposition to portray the dynamic correlations between development of infrastructure and economic growth in chinese rural areas
摘要本文以建立向量誤差修正模型為基礎,使用脈沖響應函數和預測方差分解來描述中國農業基礎設施發展與農村經濟增長之間的動態相關性。It shows that there is cointegration relationship between the economic growth rate and the m1 increase rate. then by using the cointegration, granger causality method, impulse - response analysis, vector error correction model with markov regime switching to test the equilibrium relationship in long run and the short fluctuation pattern in short run between the real output and m1 increase rate, it shows that monetary supply can affect the macroeconomic effectively, and the interest rate and stock market value can not affect the macroeconomic effectively
本文研究了經濟增長與貨幣供給量、利率、股票市場等貨幣中介指標的關系,得出經濟增長率與m1增長率具有協整關系的結論,在此基礎上使用協整分析、 granger因果關系檢驗、脈沖響應分析、具有markov區制轉移的向量誤差修正模型等最新的經濟計量方法,描述和檢驗了中國經濟周期波動過程中實際產出與貨幣供應量變動的長期均衡關系和短期波動模式。A more systemic and in - depth research of error correction on grating dynamic measurement system is performed through analyzing the characteristics of dynamic error, the characteristics of angle and circular division measurement, the dynamic error statistical characteristic of measurement system and the error transfer characteristics
通過對動態誤差特性、角度和圓分度測量特點、測量系統動態誤差隨機過程特性和誤差傳遞特性的分析,對光柵動態測量系統的誤差修正技術進行了較系統和深入的研究。分享友人