frequency-time analysis 中文意思是什麼

frequency-time analysis 解釋
頻率時間分析
  • 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。
  • 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 ...
  • analysis : n. （pl. -ses ）1. 分解，分析；【數學】解析。2. 梗概，要略。3. 〈美國〉用精神分析法治療（＝ psychoanalysis）。
  1. We discuss the forecast method which based on wavelet neural networks by combining good time and frequency local analysis ability which wavelet analysis possesses with learning ability which neural networks possesses, and bring forward a frondose, banausic algorithm in this dissertation0 also, a essential thinking of combined forecast based on wavelet neural networks is described and a essential trait of combined forecast based on wavelet neural networks is pointed out

    結合小波分析所具有的良好的時頻局部化分析能力和神經網路所具有的學習能力，討論了小波神經網路預測方法，並給出了其具體、實用的演算法。文中還描述了基於小波神經網路組合預測的基本思想，指出了利用小波神經網路進行非線性組合預測的特點。
  2. The apparatus, with the specialities such as miniature, automation, flexibility, and individual - computer managing has become the developing trendof the testing equipment today. based on analysis of the characteristic and the system structure of the visual instrument, the paper has studied the design idea of it, put forward the exploiting methods of the visual instrument based on the object - oriented technique, exoatiated on the technique kernel of design the visual instrument under windows environment, designed a typical visual instrument " vis - 1 signal - analyzing and wave - displaying system ", which integrates multi - function instruments such as general oscillograph and ulf oscillograph real - time signal recorder wave and frequency - pedigree analysis instrument. the system has more excellent functions and characteristics than traditional instruments

    本文研究了虛擬儀器系統的設計思想，在分析虛擬儀器系統的特點及其體系結構的基礎上，提出了基於面向對象技術的虛擬儀器系統開發方法；闡述了windows環境下實現虛擬儀器的技術要點；實現了一個典型的虛擬儀器系統「 vis ? 1信號示波分析系統」 ，該系統集普通示波器、超低頻示波器、存儲示波器、瞬態信號記錄儀、波形及頻譜分析儀等多種儀器功能於一身，並具有許多傳統儀器難以達到的優越功能和性能。
  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. Therefore, aiming at the existent static and dynamic error of fcs sensor, the sensor characteristic compensation subunit is designed in the environment of labview using vi technique. the sensor signal disposal platform is also developed to realize the time domain measurement, frequency domain analysis, long - distance transfer and network release, etc. firstly, the static characteristic and nonlinear error of the sensor are analyzed

    為此，本文針對飛控系統傳感器存在的靜態和動態誤差，利用虛擬儀器技術在labview環境下設計了傳感器性能補償環節，開發了傳感器信號處理平臺，對信號進行時域測量、頻譜分析、小波消噪、遠程傳輸和網路發布等。
  5. A blind source separation algorithm by using time - frequency signal analysis

    一種基於時頻分析的盲信號分離演算法
  6. Then it is applied to a multi - step model predictive controller in optimal control fashion. frequency, time domain analysis and simulation shows that the system is feasible

    時域分析表明，對於二次型性能指標來說，該預測控制器是次優的，我們並提出了計算二次型性能指標的公式。
  7. Vibration analysis software adopting win32 api, multi - thread design and modular configuration has such functions as real - time wave display, real and frequency domain analysis, data store and so on

    振動分析軟體採用統一的win32編程介面，多線程設計和模塊化結構，可執行代碼小，易於功能擴展；具有實時波形顯示、實域頻域分析、數據存盤等功能。
  8. According to the characteristic the method of slag characteristic parameter identification is brought out. the method of the signal processing includes time analysis, frequency analysis and the wavelet analysis. based on the thesis, the software of slag detection using vibration measurements is developed

    除了用傳統的時域和頻域分析方法對鋼流的振動信號進行分析處理外，又系統的應用小波分析理論，對處理與識別過程中的主要環節進行了深入的研究，提出了鋼渣特徵參數的識別方法，並編寫了下渣振動檢測軟體。
  9. Firstly, frequencies of each mode shape are gained through frequency spectrum analysis of time domain signals of key points. secondly, time domain signals, which correspond to structural mode shapes, are gained through band - pass filter technology. lastly, the corresponding mode shapes of each natural frequency are constructed by using time domain signals, which are processed by band - pass filter technology

    該方法的基本思想是先通過對關鍵點處時域信號進行譜分析得到結構各階振型對應的固有頻率，然後通過帶通濾波技術得到結構關鍵點在每階固有頻率下對應的時域信號，最後用濾波后時域信號構建結構在每階固有頻率下對應的振型。
  10. The main research in this thesis can be summarized as follows : ( 1 ) the structure and features of tc620 turbo cycling compressor are introduced. its frequent faults, fault mechanism and diagnosis are also analyzed. ( 2 ) the vibration signal analysis based on fault analysis and processing are presented, including wave analysis, tarce analysis, frequency spectrum analysis etc. and connected signal transformation ideas are also described, which can be conducted in amplitude field, time field and frequency field according to different needs

    本文主要包括以下內容： （ 1 ）介紹了tc620透平循環壓縮機的結構特點，歸納總結了其常見的故障現象，分析了各類故障產生的機理和診斷方法； （ 2 ）論述了基於故障分析處理的幾種常用的振動信號分析法，如波形分析、軌跡分析、頻譜分析等。
  11. Wavelet transformation is a time - scale and time - frequency signal analysis. it has many desirable properties, and has been widely applied in many fields

    小波分析是一種信號的時間? ?尺度分析和時間? ?頻率分析方法，它具有很多優良的特性，在實際工程中得到了廣泛的應用。
  12. In the thesis, a functional software was developed for auto - analyzing the field evoked potential, which can automatically measure the time domain parameters such as the amplitude area latency of population spikes, the slope of excitatory postsynaptic potential and so on, it also can make the frequency - domain analysis

    它可以自動、快速地測出海馬誘發場電位的時域參數，如：群體峰電位（ populationspikes ， ps ）的幅度、面積、潛伏期以及興奮性突觸后電位（ excitatorypostsynapticpotentials ， epsp ）的斜率等，同時也可以對信號進行頻域分析和處理。
  13. The paper proposed a method that combining the lamb wave with time - frequency domain analysis technology for the damage detection of composite materials

    本文將lamb波與hht技術結合起來，用於復合材料結構的損傷識別。
  14. The noise suppression uses two methods ? mlms self - adaptive filter arithmetic and blind signal separation. the lung sounds data analysis uses time domain analysis, frequency domain analysis, power spectra analysis, time - varying spectra analysis and so on. healthy people and lung disease patients ’ lung sounds are collected by the system and the data affirms the reliability and practicability of the system

    我們利用該系統對正常人和肺病患者的肺音進行了採集和分析，通過這些分析數據，既肯定了該系統的可靠性和實用性，又對各種肺音分析演算法進行了對比和驗證，對該系統的臨床應用打下了良好的基礎。
  15. Due to the unsteadiness of the vibration signal, conventional methods of gear fault diagnosis based on steady signal processing, which consist of time domain and frequency domain analysis method, are not as effective to local defect as to dispersed defect of gear

    傳統的齒輪故障診斷方法（包括頻域分析方法和時域分析方法）對于齒輪的分佈故障有很好的診斷效果。但當齒輪產生局部故障時，失效的輪齒間斷地進入嚙合，產生沖擊振動，使得齒輪振動信號包含了非平穩或時變成分。
  16. After doing the modifying of machine in calculating the real amplitude and frequency - time analysis to all selected records, the group velocity was calculated for each seismograms

    對這些地震記錄做儀器頻響特性校正，同時進行頻時分析（ ftan ） ，求其群速度頻散。
  17. When we are on top of the language of dynamic c. the real - time analysis of frequency can be realized finally

    通過對動態c語言的熟練掌握，最終實現實時頻譜分析。
  18. Time - frequency signal analysis and application

    時頻分析及其應用
  19. The error reasons of low resistance measurement are studied, the theory of removing line resistance error proves to be right with time - domain analysis method and frequency - domain analysis method, and the results proved to be true by the experiment datum with the statistics method

    研究了低電阻檢測時產生系統誤差的原因，分別用時域和復頻域兩種方法分析了在低電阻檢測時消除附加電阻誤差的原理；並通過兩組實驗數據用數理統計的方法驗證了附加電阻誤差影響已經被消除的結論。
  20. But time - frequency domain analysis and artificial intelligence provide the new way to fdi. so in this thesis, after finished the real - time fdi software of srfcs, we will study the new fdi algorithm

    而近年來人工智慧、時頻濾域信號分析等新理論為故障檢測提供了新的途經，為此，本論文在完成故障檢測與隔離實時工程軟體后，將對這些新理論進行研究。
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