time harmonic 中文意思是什麼

time harmonic 解釋
時諧
  • time : n 1 時，時間，時日，歲月。2 時候，時刻；期間；時節，季節；〈常pl 〉時期，年代，時代； 〈the time ...
  • harmonic : n 1 【音樂】泛音；和聲。2 〈 pl 〉【數學】諧函數，調和函數。3 【物理學】諧波，諧音。adj 1 和睦的...
  1. We acquired the system ' s dynamic response when the satellite attitude was adjusted and the mode of the antenna. then modal analysis and dynamic analysis have been done to the satellite - antenna system by using the finite element analysis ( fea ) software of ansys. through the analysis we got the system ' s connatural characteristic, the amplitude - frequency characteristic of harmonic response, the power spectrum density of random vibration response, the maximal amplitude and resuming time of impact response

    其次藉助ansys有限元分析軟體，對系統進行了模態分析和動力學響應分析，獲得了不同天線結構參數下的衛星?天線系統的固有特性，簡諧響應的幅頻特性，隨機振動響應的功率譜密度，以及沖擊響應的最大幅值和恢復時間等。
  2. Firstly, in spherical coordinate system, the sovp formulation for the time - harmonic electromagnetic fields of the current dipole in conductive infinite - space is derived, using reciprocity theorem and transforming relations between special functions. then, selecting appropriate coordinate system, using superposition principle, the boundary - value problem of modified magnetic vector potential on the problem of a time - harmonic current dipole in spherical conductor is solved and analytical solution is obtained. finally, by means of the addition formulas of legendre polynomial and spherical harmonics function of degree n and order 1, the analytical solution in spherical coordinate system specially located is transformed into that in spherical coordinate system arbitrarily located

    首先利用特殊函數間的轉化關系和互易定理推導得到了無限大導體空間中球坐標下時諧電流元電磁場的二階矢量位形式：然後利用疊加原理，選擇合適坐標系，求解了導體球中時諧電流元的修正磁矢量位邊值問題，得到了問題的解析解；最後依據不同坐標系下電磁場解的轉化原理，藉助勒讓德多項式和n次1階球諧函數的加法公式，將坐標系特殊安放時的電磁場解析解變換到坐標系一般安放時的解析解，給出了球內電場和球外磁場的並矢格林函數。
  3. Finally, the impedance analytical expression for the solenoid coil with a finite - length ferrite core carrying time - harmonic current is obtained through the magnetic vector potential

    最後由矢量磁位得到帶有限長磁芯的放置式通電圓柱線圈的阻抗解析表達式。
  4. Numerical analysis of the electromagnetic field caused by the eddy - current transducer the dissertation calculates the field caused by the solenoid coil with a finite - length ferrite core carrying time - harmonic current by the finite element method

    二、渦流傳感器電磁場數值分析本文採用有限元數值分析方法計算了含有有限長磁芯的放置式線圈的屯磁場。
  5. First, in virtual of identification of flaws is a typical of in - verse problems, proceeding from time - harmonic electromagnetic maxwell ' s equa - tion and helmholtz equation, the uniqueness and existence of direct scattering problems including the numerical algorithms of diverse of boundary conditions is given. second, the uniqueness and existence of inverse scattering problems and the theory of ill - posed integral equation are briefly looked back upon. finally, indicator function method for boundary identification is set up under all kinds of boundary conditions for inverse scattering of homogenous and inhomogenous objects, meanwhile, the proof of possibility for near - field measurements and nu - merical simulation are given

    由於缺陷的識別是一類典型的反問題，因而首先從時諧電磁maxwell方程和helmholz方程出發，具體地闡述了求解正散射問題的有關方法，包括各種（夾雜）邊界條件下的數值解法，就解的存在性唯一性給予了肯定的回答；隨后對逆散射問題的理論作了簡短的回顧，包括解的唯一性以及非線性不適定積分方程的處理等；然後對均勻介質和非均勻介質的逆散射問題建立了在各種邊界條件下的邊界識別的指示函數方法，鑒于近場數據獲得的重要性，對近場測試時邊界識別的方法給予了相應的證明，並且實現了數值模擬。
  6. According to the analysis and compare of all the methods of harmonics analysis in the power system, this paper introduces an adaptive sampling harmonic analysis method adapted to realization of precise real time harmonic analysis

    為了更好的滿足實時性和精確性兩方面的要求，本文採用了一種自適應調整采樣率的諧波分析法。
  7. Traditional energy meter can cause errors under the condition of harmonics due to its structural characters, and at the same time harmonic loads take in foundational power and send out harmonic power. this paper proposes a new way and realizes accuracy and fair energy metering

    傳統的電能表在諧波存在下由於自身的結構特性會產生誤差，就此進行分析提出了新的電能計量方法，應用虛擬儀器技術實現了準確、公平、合理的電能計量。
  8. The analytical solution of time - harmonic electromagnetic fields excited by an arbitrary current dipole in spherical conductor is obtained

    求解了球導體中時諧電流元的電磁場解析解。
  9. Based on the fepg system of feijian, the solutions of static electric field, quasi - static electric field and time - harmonic field are researched

    基於飛箭公司fepg系統平臺，本論文研究了靜電場，準靜電場，時諧場的求解問題。
  10. Before giving the numerical solution, the finite element method and how to make the finite element analysis for 3d time - harmonic electromagnetic fields and 3d eddy - current fields are introduced in detail

    在此之前，詳細介紹了有限元方法以及三維時諧電磁場的有限元分析方法和三維渦流場有限元分析的a - ， a法。
  11. As the first step, a variational function is derived from 3 - d time harmonic field maxwell equations and for x - cut y propagation lithium niobate waveguide, the according variational function can also be gotten by a similar process

    本文首先推導了對于時諧場普遍問題的變分方程，進而對x切y傳的鈮酸鋰波導進行研究。
  12. To verify analytical solutions, the numerical solution is computed for the problem that an arbitrary time - harmonic current dipole is in a conductive sphere utilizing finite element method and the analytical solution is compared with the numerical solution

    為驗證所求電磁場解析解的正確性，利用通用有限元分析軟體對導體球中時諧電流元的電磁場解析解作了數值驗證。
  13. In this thesis, studies are made on the problem of time - harmonic electromagnetic fields excited by an arbitrary current dipole in spherical conductor. the problem is presented in eddy - current nondestructive test and geophysical prospecting. under the condition of magnetic quasi - static state, the boundary - value problem about modified magnetic vector potential is solved and the analytical solution is obtained

    本論文針對渦流無損檢測和地球物理勘探領域用到的球導體中時諧電流元的電磁問題做了研究，在磁準靜態近似下，求解了修正磁矢量位的邊值問題，獲得了問題的解析解，並利用通用有限元分析軟體做了數值驗證。
  14. The 3 - d vector and pattern of electromagnetic field and power density on a sphere from an array of time harmonic current

    弦變線電流陣列在球面上電磁場及功率密度流之時變向量與三維場形。
  15. The controllers have considered all sorts of imperceptible factors affecting the servo performances in a lpmsm servo system, which include the parametric uncertainties brought by the changes of the mobile mass, frictional coefficient, the thrust fluctuations aroused by the varieties of the magnetic density distributions and the time harmonic. the h state feedback controller restrains disturbances and uncertainties to keep the robust and stable performance. the ip controller, which has the ability of rapid response, is applied to satisfy the rapid performance

    在分析雙環控制問題時，針對直線永磁同步電動機，仔細考慮了能使伺服系統性能變壞的各種細微因素，如：永磁同步直線電機動子質量變化、摩擦系數變化等造成的模型參數不確定性，電機運行期間存在磁密分佈變化、時間諧波等產生的推力擾動等，採用了ip速度控制器和h _狀態反饋控制器相結合構成直線伺服的內環控制器，並輔助設計了外環的pi位置控制器。
  16. It is verified the time harmonic wave propagation consists of a incident wave and a reflected wave ( even if by circuit theory of abcd matrix of r, l, c )

    驗證傳輸線上各頻率成份弦波電壓及電流之沿線分佈（電路矩陣模式解）為入射波與反射波所合成。
  17. Summing up time harmonic propagated waves of all frequency gives the pulse propagation along the line

    加總所有頻率成份弦波之時域傳播即得時域脈波之傳播。
  18. If the time harmonic source is assumed to be constant voltage, the summed pulse propagation is the impulse response along the line

    若各頻率成份之電源為定電壓，則所得時域脈波即脈沖電壓源在傳輸線上之脈沖響應。
  19. The time harmonic voltage and current wave propagation along a transmission line can readily be transferred from frequency domain voltage and current phasor distribution along the line

    由傳輸線上電壓及電流沿線分佈之頻域相量，可轉換為傳輸線上各頻率成份弦波電壓及電流沿線之時域傳播。
  20. The pollution in power net is serious, the real - time harmonic compensation becomes more and more important. the active power filters is a new harmonic and reactive power compensation equipment which was brought forward in 1970 s, compared with the traditional l - c filters the active poewer filters have the merits in rapid reflect 、 better compensation and the ability in dynamic compensation

    有源電力濾波器是70年代提出的一種新型的諧波及無功動態補償裝置，與傳統的無源lc濾波器相比較，具有響應快、補償效果好和能夠實現動態補償的優點。本文介紹了有源電力濾波器的發展及其應用、分類及工作原理。
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