second-order design 中文意思是什麼

second-order design 解釋
二階設計
  • second : adj 1 第二的；第二次的；二等（的）。2 次等的；較差的；劣於…的 （to）。3 〈美國〉較年輕的。4 另一...
  • order : n 1 次序，順序；整齊；（社會）秩序，治安；狀況，常態；健康狀態；條理；會場秩序；議事程序，日程；...
  • design : vt 1 計劃，企圖，立意要…。2 指定，預定；留給，留著。3 設計，草擬，擬定，籌劃；起草，畫草圖，打（...
  1. Powerformer have some changes in constract with the conventional generator ， subsequently it also have some new problems in order to have an economical ， efficient ， credible development and application the structure and the philosophy of electromagnetism of powerformer will be on speaking terms changes electrical design ， magnetism design ， thermal design and structural design are have some new changes above all ， the electromagnetism parameter and the harmonic magnetomotive force of powerformer are studied in this paper first ， it mainly utilizes analytics to deduce formula of slot leakage reactance it considers three instances ， including monolayer - slot ， multilayer isometric - slot and multilayer anisometric - slot then ， the analytics and the fem are utilized to calculate slot leakage reactance of stator winding of prototype of powerformer and compare their results second ， the theory of utilitzing fem to calculate the reactance of powerformer is simply introduced ， including stable reactance ， transient and subtransient reactance specially ， the saturated influence of the stable reactance is considered then ， the results are analysed final ， it mainly introduces the influence of harmonic magnetomotive force of stator winding and analyses the harmonic magnetomotive force of stator winding then ， it mainly analyse harmonic magneto - motive force of stator winding through arranging various arrays of stator winding and observe their influence

    基於上述原因，本文對powerformer的電磁參數以及定子繞組諧波磁勢進行了研究。首先是用解析法推導出powerformer定子繞組槽漏抗的計算公式，考慮了單層圓形半閉口槽、多層等半徑圓形半閉口槽和多層不等半徑圓形半閉口槽三種情況，並對powerformer樣機的定子繞組槽漏抗用解析法和有限元法進行了計算，並比較其結果；其次，簡要介紹了有限元法計算powerformer電抗參數的原理，包括穩態電抗、瞬態電抗和超瞬態電抗，對穩態電抗考慮飽和影響，對結果進行分析；最後，介紹定子繞組諧波磁勢對電機運行性能的影響並對定子繞組諧波磁勢進行了分析。然後通過對定子繞組進行不同排列來分析定子繞組諧波磁勢，看看繞組排列對諧波磁勢的影響。
  2. Recent progress in molecular design of organic second - order nonlinear optical chromophores with both large first - order molecular hyperpolarizability and good transparency

    兼具大的二階光學非線性與良好透明性的有機生色團的分子設計進展
  3. In order to take the influence of the internal force from translation into consideration, the design of in - plane buckling of unbraced frames adopted a new second - order elastic method to calculate the structural internal force, e. g. the imaginary horizontal loads method

    為考慮變形對內力的影響，對無支撐框架的平面內穩定計算提出採用假想水平荷載法進行二階彈性內力分析，以與國際上鋼結構設計相接軌。
  4. Section ii describes the design approach and implementation of speech module on mcf5249 coldfire core. the speech codec optimizes g. 729a codes and added voice activity detection of g. 729b to save bandwidth ; the implementation of acoustic echo cancellation uses nlms algorithm and it can reduce echo though designing adaptive fir filter and speech detector ; the dtmf and cpt generate signal using two second order digital sinusoidal oscillators and detect signal by picking up the frequency information. but only get the frequency information is not enough in cpt detector, this thesis introduces a method

    其中對語音編解碼器的設計採用優化g . 729a代碼達到設計要求，並在此基礎上加入g . 729b的靜音檢測模塊，以進一步降低網路傳輸帶寬;對回聲消除器的設計採用nlms演算法，通過設計自適應fir濾波器和語音檢測器達到回聲消除目的;對雙音多頻設計，信號發生端採用構造靜態參數表並通過二階正弦振蕩器產生信號，信號檢測端提取頻率信息以檢測信號;對呼叫進程音設計，除了類似雙音多頻的信號發生及頻率檢測設計外，還需要檢測信號持續時間，作者設計了一種基於匹配狀態表的方法以檢測信號持續時間。
  5. To explore why the ratio of collectable wort extract is higher than that of non - extruded, the influences of all parameters of rice extrusion system ( barrel temperature, material moisture, screw speed ) on resistant starch content of extuded rice were studied by using second - order quadratic orthogonal rotating combination design method

    摘要為探索擠壓蒸煮大米啤酒輔料麥汁浸出物收得率高於傳統不擠壓蒸煮啤酒輔料收得率的原因，用二次正交旋轉組合試驗法設計安排試驗，研究了大米擠壓蒸煮系統諸參數（套筒溫度、物料含水量、螺桿轉速）對大米抗性澱粉含量的影響規律。
  6. A systematic design method of second - order active filter

    關于時點數列序時平均數計算方法的改進
  7. Design of current - mode second - order filter based on multiple - output ftfn

    一種基於多輸出四端浮地零器的電流模式二階濾波器的設計
  8. The present findings of nonlinear research in frame structures, and the methods for design of second - order effect in the codes from china and other countries, were briefly introduced in this paper. the contents and methods of design and calculating about second - order effect in gb50017 - 2003 were discussed as well. a rotational displacement equation for geometric nonlinear structures was derived, and then a nonlinear finite element program for rigid frames was compiled by fortran

    本文簡要地介紹了框架結構非線性研究的現狀以及各國規范對框架二階效應的設計內容和方法；對我國《鋼結構設計規范》 gb50017 - 2003給出的考慮框架結構二階效應的方法進行了探討；推導了基於幾何非線性框架的轉角位移方程，在此理論基礎上用fortran語言編制了剛性框架二階內力分析的有限元計算程序，並用此結構分析程序對多種框架進行了一階和二階的彈性分析，討論了二階效應在框架分析中不應忽略的原因，同時分析了影響框架二階效應的因素。
  9. In the last chapter, the submarine motion tendencies under first order and second order wave force actions are illustrated through theory analysis and simulations, which established the foundation for studying the design of autopilot control system under wave force disturbances

    最後本文從理論、模擬兩個方面分析和顯示了艇體在一階、二階波浪力作用下的運動趨勢，從而為研究潛艇近水面波浪力干擾下的潛艇自動舵設計奠定了基礎。
  10. The design methods of the orpadtc, which are based on lyapunov stability and popov hyperstability, are discussed. in the chapter six, simulations are done for a few typical first order upldt and second order upldt. the simulation results prove that the orpadtc has good power in dead - time compensating and adaptive tracing when the process being controlled has terrible uncertainty and parameter perturbation, and it is easy to design

    第六章對幾個典型的帶有大時滯的一階、二階過程及高階過程進行了實例設計與模擬，證明了在受控過程存在嚴重不確定性的情況下，對象參考參數自適應時滯補償器具有良好自適應跟蹤能力和時滯補償能力，並且易於設計應用。
  11. Studied and proofed the relationship between the continuity of the interpolation spline function ' s derivative and its low - pass respondence in frequency domain. that is, we have try to answer the question : why do we need to design a spline function with second order continuity of its derivative

    推導了插值樣條函數的導數連續性與其頻率響應的低通性的關系，在數學上解釋了為何在構造樣條函數時要追求二階導數連續。
  12. This thesis describes the three important methods for designing pid controller : imc - based method, frequency method and direct synthesis method. we respectively design the pid controllers for the first - order plus dead - time processes, second - order plus dead - time processes, non - minimum phase processes, integrating and unstable processes, then, performance assessment and robustness metrics are used to compare the pid controllers of the individual process

    論文著重研究了pid控制器的三種重要設計方法：內模法、頻域法和直接綜合法，並從確定性性能指標和魯棒性性能指標的角度，比較這些設計方法在一階加純滯后、二階加純滯后、非最小相位、積分和不穩定過程pid控制器設計中的應用效果。
  13. When the elastic design method is used, the paper proposes the recommendation that designer can not consider second - order effect on structural internal force, but must consider the effect on drift computing, and also gives a simplification method for calculating the second - order drift. base on above research achievements and referencing current design codes and research documents, this text has done overall discussions on the elastic design method, the chief works includin

    基於前面的研究成果，參考現有各國鋼結構設計規范和已有的研究文獻，本文首次對鋼結構錯列析架體系的彈性設計方法作了全面的探討，主要工作包括材料的選用、構件截面形式、構件彈性設計方法、連接節點設計和構造詳圖、組合樓蓋的設計、栓釘剪力連接件的設計。
  14. But the conventional structural approximate analysis methods based on the first - order or the second - order derivatives of the stresses and the displacements of structures are not global, while an efficient global structural approximate analysis methods is helpful to decrease the number of the times of structural analysis, so the amount of calculation of structural analysis in the structural optimum design is reduced

    但是常用的基於結構應力、位移的一階和二階導數的結構近似分析不具備全局性，而有效的全局性的結構近似分析可有效地降低結構分析次數，從而可減少結構優化設計中結構分析所需的計算量。
  15. In this chapter, the suitable devices and circuit structure have been choosed to design a second order multiplier, a fifth order multiplier, a sixth order harmonics mixer and a dro operating in 9. 4ghz. the forth chapter is a section of system realization and test, in this chapter, the system of low phase noise frequency source has been constructed and tested. the results show that the targets of the system have been achieved

    第三章的系統分器件與實驗數據部分，主要是以上述第二章的分析為基礎，以所推導的理論公式為指導選取必要的器件和合適的電路拓撲結構，分別設計實現了一個二次倍頻器，五次倍頻器， 6次諧波混頻器和一個9 . 4ghz的介質振蕩器，為後述整個系統的實現在硬體上做了必要的準備。
  16. The stress and local stability constraints are transformed into movable lower bounds of sizes. an inverse variable xt = ? is inducted, and the objective function is expanded as second order taylor approximation while the displacement constriction is expanded as first order taylor approximation. the lemke algorithm is used to get the final design result

    把復雜的應力約束和局部穩定約束轉化為動態尺寸約束，引入倒變量x _ i 1 / a _ i將目標函數展開為二階近似，將位移約束用莫爾積分化為一階近似，用對偶規劃方法將原問題化為等價的二次規劃問題，調用lemke演算法，求得最優設計結果。
  17. Parameter design of second order recursive mti filter

    濾波器的參數設計方法
  18. Code for design of steel structure gb50017 - 2003, the being employed code in china, has codified the basic theory about second - order analysis, but there is no criteria about second - order drift, and the drift limits in the code can be only used in first - order lateral displacements analysis. therefore, it is urgently that researches are needed on second - order drift analysis and on how to establish the new limits for second - order drift. it ’ s a practical problem that researching how to establish second - order drift limits, and some conditions relative practical engineering are required to be taken into account

    我國現行規范《鋼結構設計規范》 （ gb50017 - 2003 ）已經將二階分析的原理列入其中，但規范中尚未涉及二階側移計算的有關內容，規范中規定的側移限值也僅限於對一階側移的約束，這就迫切需要對二階側移計算方法進行研究，以及確立考慮二階效應后鋼框架結構的側移限值。
  19. Inchinese code for design of steel structures, a second - order simplified method toconsider p - effects using the amplified parameter is put forward. in itscommentary, some examples are analyzed

    我國現行鋼結構設計規范（ gb50017 - 2003 ）中提出了通過放大系數的二階簡化分析考慮p -效應的方法，並對該方法進行了算例誤差分析，得出了其適用的范圍。
  20. Now the development in radio communication system and sensors productively need saw devices of high performance and high frequency. but electromagnetic interference of saw device is evident day and day. so the saw device technologies of the electromagnetic interference and electromagnetic compatibility in its process of design, fabrication and production must be considered. the demand request saw designer of second order effects which are not considered in low frequency

    當前在無線通信系統和傳感器方面的進展預示了需要高性能、高頻的saw器件，但是隨著其工作頻率的提高， saw器件電磁干擾問題日益突出，因此saw其電磁兼容技術在設計、研製和生產過程中是必須考慮的。
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