complex frequency domain 中文意思是什麼

complex frequency domain 解釋
復頻域
  • complex : adj 1 復雜的，錯綜的。2 合成的，綜合的；【化學】絡合的。3 【語法】復合的；含有從屬子句的。n 1 復...
  • frequency : n. 1. 屢次，頻仍，頻繁。2. （脈搏等的）次數，出現率；頻度；【物理學】頻率，周率。
  • domain : n 1 領土，版圖；領地。2 管區，勢力圈；（特定動物等的）生長圈；（學問、活動等的）領域，范圍；【物...
  1. At present, the typic harmful current detection methods are the fast fourier transform algorithm in frequency domain and methods based on the instantaneous reactive power theory, these methods all require some transform and quick, real - time calculating, so high precision analog multipliers or high speed dsp chip with fast a / d are needed, this results in complex circuit and high cost ， which have restricted the development of apf

    目前畸變電流檢測常用的方法有頻域法的fft和基於瞬時無功理論的畸變電流檢測法。這些方法均有一定的變換，需要快速、實時運算，因此必須使用高速的數字微處理器和高性能a / d轉換器，這必將大大提高系統成本，使得電路結構復雜，在一定程度上限制了有源濾波器的發展。
  2. 4. with visco - elastic boundary of soil considered, the eigenvalue equation in frequency domain of soil dynamic equilibrium equation falls into a complex transcendental equation. in course of seeking its solution, based on argument principle and contour integral, with the aid of matlab, two numerical algorithm combined with the corresponding procedures for solving transcendental equations in a complex plane is developed by the author

    4 、由於考慮了土體的粘彈性支承邊界條件，使得其動力平衡方程在頻域內的固有值方程為一復數超越方程，為了求解該方程，筆者基於幅角原理和閉合曲線積分，結合matlab ，提出了復平面上超越方程的兩種數值解法，並編制了相應的程序。
  3. Frequency domain analysis and time - frequency joint analysis of experimental results show that the complex vibration of target can be effectively detected by laser micro - doppler effect, and it lays the foundation of target detection, classification and recognition

    實驗結果的頻譜分析和時頻域的聯合分析表明：利用激光微多普勒效應，可以有效地探測目標的復合振動，為目標的探測、分類和識別奠定了基礎。
  4. Abstract : applying the frequency - domain representation of the complex signals in a three - phase system, a harmonic detection method based on the in - phase correlation filtering was put forward in this paper, which can be used to detect effectively the generalized harmonics in the three - phase system except the fundamental of positive sequence

    文摘:採用三相系統復信號的頻域表示並根據頻譜搬移原理，本文提出了一種基於同步相關濾波的諧波檢測方法，可用於三相電路中除正序基波以外廣義諧波的有效檢測。
  5. Random process theory is a kind of effective mathematical tool to handle random vibration problem. through frequency spectra and time domain analysis for random course, the seemed complex vibration time - history can be transferred to trigonometric function series, thus makes it have certain periodic feature

    隨機過程是處理隨機振動問題的一種有效的數學工具，通過對隨機過程進行時域分析和頻譜分析，可以將看似非常復雜和毫無規律的隨機振動表示為三角函數的級數形式，從而使其具備了一定的周期性特徵。
  6. The honeycomb sandwich structure has been widely utilized in engineering field nowadays. however, due to the complex construction of this structure, it seems not quite easy to describe its dynamic characteristic clearly and completely via conventional methods. the purpose of this thesis is to analyze and identify the dynamic characteristic of honeycomb sandwich structure based on nonlinear methods to stochastic data in frequency domain

    現今鋁蜂窩夾層結構廣泛應用於工程領域，但由於鋁蜂窩夾層結構復雜，使得應用傳統的辨識方法難以對其動力學特性給出清楚和完整的描述，本文的目的就是應用隨機數據的頻域非線性分析與辨識方法對鋁蜂窩夾層結構的動力學特性進行辨識。
  7. Since the analysis of the inverter and its control system is very complex, the frequency analysis, time domain analysis and control system is made in capacitance operated conditions limited to pressure of time and paper length. the research content can be summed up as follows : ( 1 ) a new equivalent circuit of dbd circuit ( dielectric barrier discharge ) that consider the consume of transformer, the on - off switching loses and so on is presented based on the ozonier powered by sine current source. as compared with the former equivalent, the new equivalent circuit can be depicted the actual ozone circuit accurately

    本文主要針對容性狀態下的臭氧發生器電源進行相關研究，研究內容包括以下幾部分: （ 1 ）在正弦電流源供電的dbd型發生器的基波等效電路基礎上，提出了一種考慮電路雜散損耗（變壓器勵磁損耗、開關管開關和導通損耗以及其他元件的熱損耗）的改進型基波等效電路，並採用該等效電路得出了適用的臭氧發生器電源設計方法，實驗驗證了該基波等效電路具有工程設計精度高的優點。
  8. But the complex analytical signal ( cas ) theory can erase this spatial sigu - larity. in this section, gauss, hyperbolic and lorentz pulsed gaussian beam have been derived and compared svea and cas solution by numerical simulatio n. in section 3, by using fourier transform technique and applying the paraxial approximation in frequency domain, we derive an integral solution for the transverse and longitudinal components of the light field propagating in free space

    接著，考慮了幾種特殊的脈沖gauss光束（ pulsedgaussianbeam ） ，結果顯示，在此情況下緩變包絡近似（ slowly - varyingenvelopeapproximation ）理論已不再有效，其失效的原因是，該理論導致了脈沖光束解的空間奇異性，並使脈沖光束不再具有符合物理意義的光束行為，而通過復解析信號的分析方法可以消除這種空間奇異性。
  9. As to the polyreference implemention of the least - squares complex frequency - domain estimator in mathematical separation technique of modes, this thesis builds a right matrix - fraction description model to estimate the system poles. then frequency point stabilization diagram is set up and analyzed to automatically determine natural frequencies, modal damping ratios and modal participation factors. finally mode shapes are identified based on the least squares theory

    對于模態數學分離技術的多參考點最小二乘復頻域識別技術，先建立右矩陣分式頻響模型，識別出系統極點，再通過建立和分析頻率點穩態圖，能自動的確定出結構的固有頻率、模態阻尼比和模態參與因子，最後根據最小二乘原理識別出模態振型向量。
  10. For handling the interference from complex environment, this thesis presents a kind of real time on - line monitoring system. the main works include : 1. by consulting a lot of related documents, analyzing the time domain waveform, frequency - domain waveform and various detecting ways

    圍繞此解決方案主要完成了以下主要工作： 1 ）閱讀了國內外大量相關文獻，透徹分析了局部放電和各種干擾信號的時域、頻域的波形特徵，並對各種檢測手段進行了分析。
  11. With the development of radar technology, radar system has been more diversiform and complicated, which make ecm face much more complex electromagnetic environment. how to sort and analyze signal exactly is an important research of ecm. in this paper, we mainly research the signal sorting 、 system simulating and dsp realizing : 1. the paper introduces the environment of ecm and analyses the character of time domain 、 frequency domain 、 air space 、 power density and polarization detailedly

    本文主要就是研究復雜電磁環境下的彈上電子對抗系統信號分選關鍵演算法、系統軟體模擬以及dsp的實現，主要包括以下幾個方面: 1 .對電子對抗環境進行了介紹，並對雷達偵察機的信號環境的時域特徵、頻域特徵、空域特徵、功率密度（能量）特徵以及極化特徵進行了詳細的分析，得出了對雷達偵察接收機信號分選系統設計的主要依據。
  12. Thus the resistance factor and vibration modes of the soil layer are obtained and used to analysis the pile response. by considering the interaction between the soil layer and the pile with boundary condition of continuity of displacement and equilibrium of force at the interface of soil layer and pile, the dynamic equilibrium equation of pile is solved and an analytical solution for the pile response in frequency domain is yielded, which is used to define complex stiffness and mobility at the level of the pile head. based on the convolution theorem and inverse fourier transform, a semi - analytical solution of velocity response in time - domain subjected to a semi - sine exciting force is given

    首先通過引入勢函數方法對土體位移進行分解，從而將土體動力平衡方程解耦，求解得到了土層的振動模態和阻抗因子，然後利用該解以小應變條件下樁土接觸面上力平衡和位移連續條件來考慮樁土耦合作用，求解樁的動力平衡方程，得到了樁頂的頻域響應解析解、復剛度和速度導納，利用卷積定理和傅里葉逆變換，求得了半正弦脈沖激振力作用下樁頂速度時域響應半解析解。
  13. The basic concepts of second - order coherence theory in describing wavefields are introduced. these concepts are the cross - spectral density function and spectral degree of coherence in the space - frequency domain, and the mutual coherence function and the complex degree of coherence in the space - time domain

    介紹了二階相關理論中描述光場相干性質的基本概念，包括空間-時間域中的互相關函數、復相干度和空間-頻率域中的交叉譜密度函數、光譜相干度。
  14. Based on theoretical deductions and data simulations, this dissertation analyzes properties of echo data in time domain, frequency domain and wavelet packet transform ( wpt ) domain. we also analysize properties of complex image data in image domain, image frequency domain and image wavelet packet transform domain. several methods are proposed for jamming suppression in signal domain and image domain respectively

    本文在理論推導、數據模擬的基礎上，分析了原始回波數據在時域、頻域和小波變換域的特徵以及復圖像數據在圖像域、圖像頻域和圖像小波變換域的特徵，提出了幾種行之有效的信號域和圖像域抑制方法。
  15. And complex inertia mass is presented, which clearly and briefly elucidate the interaction mechanism between mtmd and the primary structure. that the control of mtmd to the primary structure is acceleration - dependent passive control is presented. in the time domain and the frequency domain, the effects of the response of displacement and acceleration with both the single - mode control and the multi - mode control are analyzed

    提出mtmd的復慣性質量，用數學公式闡明mtmd對結構的控製作用及其影響因素；提出mtmd的控制類型是加速度相關型的無源被動控制；從時、頻兩域分析了mtmd對結構單模態和多模態控制效果，並且給出tmd控制加以比較驗證。
  16. In this paper, the authors study the mathematical model for seismic wave propagation in complex underground medium, discuss the boundary element method for solving seismic wave equations in frequency - domain, and investigate the computational formation of separation of wave equations in frequency - domain

    摘要分析了復雜地下介質情形地震波傳播的數學模型，討論了地震波數學模型數值求解的頻率域邊界元方法，並得到波動方程頻率域邊界元法的離散化計算公式。
  17. Finally we study a modified algorithm, which applies the fast fixed - point algorithm for complex signals to blind signals eparation in frequency domain. it ’ s a one - unit algorithm. to prevent converging to the same signal, the deflation algorithm is used to separate signals one by one

    4 .結合上述卷積混合信號的頻域分離演算法，研究了一個改進單源演算法，將復數快速固定點演算法應用到頻域加速收斂，為了防止演算法收斂于同一信號，利用一種抽氣技術，這樣可一次分離出一個信號，實現卷積混合信號分離。
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