頻率約束 的英文怎麼說

中文拼音 [bīnlǜyāoshù]
頻率約束 英文
frequency constraint
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 約 : 約動詞[口語] （用秤稱） weigh
  • 束 : Ⅰ動詞1 （捆; 系） bind; tie 2 （控制; 約束）control; restrain Ⅱ量詞（用於捆在一起的東西） bundle;...
  • 頻率 : frequency; rate
  • 約束 : keep within bounds; restrain; bind; bound; boundage;tie; restraint; restriction; engagement; repr...
  1. In this paper, the concept of acceleration ambiguity function ( aaf ) and acceleration resolution is put forward for the first time. using aaf, the effects of target ' s relative acceleration on several outputs of a linear - phase matched filter are analyzed, such as the output signal - noise - ratio loss, the doppler resolution, the constraint on optimal accumulative time ( opt ) and their tolerable limits

    論文首次提出並研究了加速度模糊函數和加速度分辨力的有關概念，並以加速度模糊函數為分析工具，詳細討論了加速度對線性相位匹配濾波器的輸出信噪比的損失程度、對多卜勒頻率分辨能力的影響程度、對最優相參積累時間的約束關系以及線性相位匹配濾波器輸出受加速度影響的容限等問題。
  2. Under the incentive of the civil - market demanding such as laser material processing and the military - market demanding such as a new generation of laser weapon candidate and icf, diode - pumped solid laser ( dpsl ) develops rapidly worldwide. as an important application, diode - pumped intracavity - frequency - doubled laser is attached much importance in recent years, but there still remain many problems unresolved completely. in this paper, i have given some abecedarian study results on some of these problems theoretically and experimentally

    因工業激光材料加工等民用市場的需求以及慣性約束聚變和作為新一代激光武器候選器件等軍方需求的推動，國際上高功率二極體泵浦固體激光器（ dpsl ）的研究進展迅速，作為dpsl的一個重要應用，內腔倍頻一直得到大家的重視，但仍有許多未徹底解決的問題和理論上的不完備之處，本論文擬對其中的一些問題作一初步的理論和實驗研究。
  3. 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。
  4. Topology optimization of truss structures with frequency constraint based on structural reliability

    具有頻率約束的桁架結構可靠性拓撲優化
  5. From the unique viewpoint of shannon information theory, this dissertation investigates the varying and transmission of information and uncertainty in control systems using measures of entropy, mutual information, kullback - leibler information and information rates, in time and frequency domains, respectively. several problems concerning state estimation, modeling, h control, performance limits and design constraints of control systems are addressed under this framework

    論文以有別于傳統控制理論的獨特視角? ?信息的觀點研究控制系統，採用shannon信息論中的熵、互信息、 kullback - leibler信息及相應的信息率分別考察了控制系統在時域和頻域中信息和不確定性的傳輸和變化，討論了狀態估計、模型化、 h _控制及控制系統性能極限和設計約束等領域的相關問題。
  6. Through the review of theories about capital structures of foreign countries, the paper compares developed with developing countries in the capital structures and analyzes the character of chinese listed company. based on ample data, the proportion of equity financing is much more than that of credit financing in the capital structure of listed company. it indicates that listed company ' s choice of financing approach has an intensive predilection of equity financing, which is far from “ pecking order ” of financing approach in matured market. at the same time, the efficiency of equity finacing is not hight, so is debt finacing. the funds raised from equity finacing changes high frequency and lacks restrict, and the efficiency of debt finacing from bank is not hight because of “ soft restriction ”. despite the debenture has a preferable restrict, it grows lentitudily in china

    大量數據說明中國上市公司融資結構中股權融資的比重遠遠超過債權融資，與成熟市場條件下公司融資方式的「啄食順序」不同，有著強烈的股權融資偏好。同時，中國上市公司的融資效率是低下的，不管是股權融資還是債權融資。股權融資募集資金變更頻繁，缺乏約束，資金使用效率不高;銀行債權融資存在軟約束，使用效率同樣不高;公司債券融資具有較高的約束力，但在我國發展受到限制。
  7. The innovative ideas in this paper are that robust h control theory based on conventional ip controller is applied to the high - precision feed of a single axis, and the controlled plant is composed of ip velocity loop and two - order model of linear motor. a constraint condition on y in the problem of h2 / h is deduced from the frequency criterion of riccati equation, which makes the repeated computation on r simple. considering the two - loops control problem, the h state feedback controller based on ip controller as the inner controller is applied to satisfy the velocity performance of the system, and a pi controller, the external controller, is used to satisfy the position performance

    本文的創新之處在於將傳統的ip速度控制器和直線電動機的二階模型作為一個廣義的被控對象，利用魯棒h _控制理論設計了一個h _狀態反饋控制器，以此解決高精度進給的控制問題，並在此基礎上研究了h _ 2 h _混合控制問題，結合h _代數riccati方程正定鎮定解存在的頻率判據，推出了一個控制器存在的約束條件，使以往須反復試探的，有了更進一步的約束范圍，簡化了計算。
  8. The example in the paper shows the efficiency of shift frequency together with inverse iteration to perform the dynamic topology optimization with frequency constrain

    文中的的算例表明移頻與逆迭代法結合后對頻率約束的動力拓撲優化問題非常有效。
  9. This method is easy to implement and has no restriction on array geometry and sensor patterns ; three methods for the design of broadband frequency invariant beamformer are proposed, which are the method of resampling signals received by the array, the dft ( discrete fourier transform ) interpolation method and adaptive synthesis method, respectively. examples and performance analyses are given for each method ; a simplified linear constrained minimum variance broadband adaptive algorithm that based on dft interpolation method is presented. compared with conventional broadband adaptive algorithms, the presented method can reduce computation work greatly

    提出了一種簡單、易於實現的恆定束寬波束形成器設計方法，該方法對陣形和陣元指向性沒有任何限制；分別提出了基於陣列接收數據重采樣、基於dft插值和自適應綜合的三種具有頻率不變波束圖的寬帶波束形成器設計方法，對于每一種設計方法都給出了一個設計實例並做了性能分析；提出一種基於dft插值的簡化線性約束最小方差寬帶自適應陣列演算法，該方法可以大大降低自適應陣列的運算量。
  10. Because the different stiffness match of front and rear suspension is very influencing to the ride comfort, optimal model of ride comfort is developed, regarding the rms of driver ’ s acceleration as the objection, regarding the stiffness of front and back suspension as optimal variable, regarding quiet flexibility 、 dynamic flexibility 、 frequency and dynamic load as nonlinear constraints. by matlab program and using sqp, the optimal match of front and back suspension ’ s stiffness is achieved, this optimal model consider not only request of quiet 、 dynamic flexibility 、 frequency and damp, but also security of run and peace of road, it is closer to the fact than other models which only consider partial restriction

    由於前後懸架垂直剛度的不同匹配對汽車行駛平順性影響較大，論文建立以駕駛員垂直加速度的均方根值作為汽車行駛平順性優化目標值、以前後懸架垂直剛度作為優化變量的優化設計模型，並輔以靜撓度、動撓度、頻率、動載荷等非線性約束，使用序列二次規劃法，利用matlab編制優化程序，求得前後懸架垂直剛度的最優匹配值;此優化模型不僅包含動靜撓度及頻率和阻尼的限制，還考慮到汽車的行駛安全性和道路友好性，比文獻報道的只考慮部分約束的優化模型更切合實際情況。
  11. Following atm and 1000m ethernet network, wlan is a hit point in the communication research field now, and is thought highly as the future of communication network

    該方案克服了電磁波頻率資源的約束，能高速傳遞大容量信息，且相對成本低、安全性高，適合寬帶傳輸的要求。
  12. The numerical results show that the nature frequencies of the structure are affected by the temperature effect, boundary conditions and the number or orientations of layers ; the proper orientations can change the nature frequencies ; the effect degree on the nature frequencies of cross - ply laminated cylindrical shell is different from that of the antisymmetric one

    結果表明，溫度效應、邊界約束、鋪層層數顯著影響結構的固有頻率，適當的鋪層角度會改變結構的固有頻率，不同的鋪層方式對結構固有頻率影響程度不同。
  13. This paper constructs fe models of srm in detail and analyzes the vibration mode and natural frequencies with the finite element analysis software package, and studies the influence of the stator structure of srm, such as stator poles, ribs, mounting feet, terminal block and structure parameters, restriction condition on the srm vibration behavior, the contrast to experiment result implies that the fea model is close to the real model for analyzing the vibration characteristics of srm

    本文基於有限元分析方法，主要研究了定子凸極、底座、散熱筋，加強筋，接線盒等結構以及結構參數對定子固有頻率和振動模態的影響，並且研究了約束條件下的sr電機定子振動特性。本文比較了模態實驗與有限元分析結果，表明所建立的二維有限元模型對分析sr電機的振動特性有較好的精度。
  14. Considering the randomness of physical parameters ( elastic module and mass density ) of structural materials, the structure dynamic characteristics is analyzed based on probability, and the distribution parameters of dynamic characteristics random variable is derived from the rayleigh s quotient

    在此基礎上，構造了具有頻率或頻率禁區可靠性約束的工程結構動力優化數學模型，並對其中關切頻率的估定，兩種頻率約束的統一表示等進行了討論。
  15. Because the synthetic seismic record and the seismic record data got in the surface are not well matching caused by the dispersion of seismic wave, frequent correction between them must be done before use. under control of well logging data, there are two important methods to get wave impedance from seismic data inversion : wave impedance inversion method based on convolution model and wave impedance inversion method based on wave equation. using seismic data attributes can predict the information of logs

    測井資料和地震資料是地震勘探中兩種最重要的資料，由於地震波的頻散，使合成地震記錄與地面地震記錄不能完全匹配，因此使用之前必須對二者進行頻率校正地震資料在測井資料約束下可以進行反演，以求取地下波阻抗，主要有兩種方法：基於褶積模型的波阻抗反演方法和基於波動方程的波阻抗反演方法可以用多屬性變換由地震資料預測測井信息。
  16. Furthermore, the comparison is made between eso and mathematical programming. in continuum structure optimization, eso is applied for topology optimization under the constraints of stress, displacement and frequency. in addition, eso is applied to the optimization for shells reinforced by ribs

    在連續體結構優化方面，討論了幾類約束下基於漸進優化方法的連續體拓撲優化，這些約束分別是應力約束，位移約束以及頻率約束；利用漸進優化方法，進行了加筋板殼結構的形狀優化研究。
  17. The importance of sensitivity analysis for structural optimal design with frequency constraints is demonstrated, and it is shown that the normal mode localization and the sensitivity of nonclassical systems are important topics which should be explored by structure designers

    摘要闡述了靈敏度分析在帶有頻率約束的結構優化設計中的重要性，並且指出主模態局部化與非經典系統的靈敏性是結構設計師需要研究的課題。
  18. The algorithm of economic power dispatch, which considers the constraint condition of network loss and frequency variation, is studied, and a pragmatic and effective method of frequency control is put forward, and the marginal cost is analyzed

    本文研究了計及網損和頻率變化率約束條件的有功功率經濟分配的演算法，提出了一種實用有效的頻率控制方法並對邊際成本進行了分析。
  19. Under the condition of unchanged topology configuration of the truss, the extremum existence of the natural frequency is demonstrated. it will orientate the optimization of structural cross - sections and the topology optimum with frequency constraints toward a further search measure. 4

    證明了在保持結構拓撲基本不變的情況下，桁架結構優化頻率的極值存在，為具有頻率約束的結構的橫截面積優化以及進一步的拓撲優化提供了優化指向； 4
  20. The solution existence for dynamic topology optimization of truss is explored from the engineering point of views : when the design variables ( section areas ) are continuous and their bound are not imposed, if there is no frequency constraint, the optimal solution always exists for a given optimization problem and contrarily, when the frequency constraint is considered, the frequency will become the key constraint and also the solution existence will be changed by the topology alteration

    從一般工程意義上探討了桁架結構動力學拓撲優化設計解的存在性：無固頻約束時，設計變量連續且不考慮上限約束，則優化問題總是有解；考慮固頻約束時，頻率約束是是否有解的關鍵約束，並且改變結構拓撲形狀可以改變解的存在性。
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