譜映射 的英文怎麼說
中文拼音 [pǔyìngshè]
譜映射
英文
spectral mapping-
Above all, the system fuse the eradiate noise ' s different sides " feature and offer strong elements for the next process : classifying. it is very important to study the classifier in this dissertation
其中線譜特徵反映了船舶輻射噪聲的頻域信息，能量特徵綜合了不同頻段內的信息，而分維特徵反映了信號的時域的信息。Spectrum preserving anti - multiplicative map
保譜反乘法映射Spectrum - preserving multiplicative maps
保譜乘法映射Then analyze typical noises of the network based on bispectrum, get the wave characteristics according to bi - coherence function, and carry on the clustering analysis based on self - organizing feature mapping, so it realizes the clustering identification of the typical noises of medium - voltage power line
而後對電網的典型噪聲進行雙譜分析，並通過雙相干函數提取其波形特徵，利用自組織特徵映射神經網路進行類聚分析，從而對特定中壓配電網的各種電網噪聲干擾進行分類識別。The spectral analysis of non - orthogonal functions cannot be obtained by orthogonal integration method. only the spectral analysis of some particular non - orthogonal functions can be realized by integral transformation. thus, the concept of reflection matrix is proposed and the mirror symmetry of spectral analysis for non - orthogonal function is revealed. any element functions whose reflection matrix can be obtained possesses its inverse element function. the spectral vector corresponding to an element function possesses its inverse spectral vector corresponding to the inverse element function. by reflection matrix the mapping relation of element function pair and spectral vector pair can be established. spectral analysis of non - orthogonal functions can be obtained with this symmetry by using the integration method as in the case of orthogonal functions, instead of calculating the inverse matrix as usual. so a convenient and practical method for spectral analysis of non - orthogonal functions is offered
非正交函數不能利用正交積分來實現譜分解.僅有某些特殊的非正交函數可以通過積分變換實現譜分解.本文提出了反射陣的概念，揭示了非正交函數譜分析的鏡像對稱性.任何能夠建立起反射陣的元函數存在著它的逆元函數，並且任何基於該元函數的譜向量同時也存在著基於逆元函數的逆譜向量.元函數對與譜向量對通過反射陣建立映射關系.利用這種對稱性，非正交函數可以象正交函數一樣使用積分方法獲得譜分解結果，而不必使用求解逆陣的方法，從而為非正交函數的譜分解提供了便捷、實用的方法Based on the study of the fore going ' s, this thesis regards time - cell, time - center and time - distance as the basic elements of urban time structure. secondly, carry out three constructing principles - - " spatial scale " maps " time distance ", maintain basic spatial structures, extrude main time structures. thirdly, summarize four expressing forms of urban time structure of which isotime curve, isotime circle, time contour and time network
理論探討部分基於前人的研究成果初步確定時間單元/時間細胞、時間中心/時間基點和時間距離為城市時間結構的基本組成要素；提出時間結構構築的三原則： 「空間尺度」映射「時間距離」 、維持空間關系之基本格局、突出表達主幹時間關系；時間結構的表達則從時間結構的形態方面總結出等時線、等時圈、時間廓線圖和網路圖等表達形式；最後提出城市時間譜概念來評價城市時間結構的優劣。2. by doing precise computation of spectral radius of linear operator of linear equation and by using measure of noncompactness and leray - schauder type fixed point theorem of condensing mapping, the existence and the uniqueness of the solutions are obtained, which extend the results recently achieved in this field
二、通過線性方程解運算元譜半徑的論證，在緊型條件下利用凝聚映射的leray - schauder不動點定理及冪壓縮映射不動點定理，獲得了解的存在性與唯一性結果，這些結果推廣了近期這方面已有的一些結果。Afterwards, neural network linked the non - linear relationship between the track ’ s parameters and it ’ s characteristics
選擇改進型bp網路，經過學習和優化，建立軸心軌跡參數和特徵譜之間的非線性映射。Multiplicative self - adjoint maps on a non - standard operator algebra which preserve spectrum
一個非標準運算元代數上的保譜乘法自伴映射Second, a jeffcott rotor model supported by two seals bearings in its two ends is established to simulate the shafting of simple turbines ( only short - and - straight - blades are included in the shafting ). and periodical response of the system is obtained by using the newmark method. then, the dynamic characteristics of rotor system at the certain rotate speed and the certain physic
其次，建立了一個用來模擬簡單汽輪機軸系（只含有短直葉片）的兩端用滑動軸承支撐的jeffcott轉子模型，並用newmark方法求得了系統的周期響應，根據系統的周期響應、 poincare映射圖、頻譜圖、分岔圖等，分析了系統在特定轉速及特定的轉子系統參數下的運動特徵。It is constructed that radial impact and rubbing dynamics differential equations of the rotor system having the nonlinear rigidity on the unsteady and non - linear oil film. the bifurcation and chaos behavior of impact and rubbing fault rotor system caused by the parameters of nonlinear rigidity, rotor rotating speed, eccentric mass is analyzed, in the numerical value analysis method. the bifurcation diagrams, maximum lyapunov exponent diagrams, poincar maps, phase plane portraits, trajectories of journal center, time - history curve, amplitude spectra diagrams of the rotor motion are used
（ 2 ）建立了具有非線性剛度的轉子系統在非穩態非線性油膜力作用下的徑向碰摩動力學微分方程，並應用含高階余項的非線性動力方程的線性化數值法研究了此類系統響應的復雜動力學行為，利用轉子響應的分岔圖、最大lyapunov指數曲線、 poincar截面映射、時域波形、相軌線、軸心軌跡、幅值譜等圖形分析了系統響應的周期運動、擬周期運動、倍周期分岔、混沌等運動形式的轉化與演變過程，重點研究了非線性剛度、轉子轉速、偏心質量等系統參數對碰摩故障轉子系統的分岔和混沌行為的影響。The software could realize the wavemaker system control, data acpuisition, data analysis and sensor calibration, the applacation of multi - thread technology, precise timing technology and memory management technology in the wavemaker system is described respectively. furthermore, the software realizes real - time display of sampling process with directx technology and adopts object - oriented thinking to handle interfacing card. estimateing spectrum with ar model and calibrating the sensor with least square algorithm are also discussed in detail
控制軟體利用多線程技術進行多任務控制；採用高精度時間函數實現精確定時；利用虛擬內存與內存映射文件進行內存管理；採用directx技術實現采樣過程的實時顯示；利用最小二乘原理對傳感器進行標定；採用面向對象思想實現對控制採集卡的操作；利用ar參數模型法進行譜估計。Thus, the wave equations have to be written in curvilinear coordinates before applying the numerical scheme. because the grid is cartesian in the curvilinear domain, standard pseudospectral technique can be applied. at last the synthetic record of physical configuration can be evaluated
這一映射技術將直角坐標系下的曲界面變換成曲坐標系下的規則界面，在曲坐標系下用偽譜法模擬波場，最後利用插值得到實際波場的合成記錄。This scheme covers techniques of texture analysis, synthesis, texture mapping and 3 - d knitting pattern analysis of fabric. we discuss here the techniques related to texture. texture analysis uses frequend - domain, wavelet or mrf to get feature distribution of texture image, classes of texel and the rule of placement
本實現方案涉及到紋理分析、綜合，紋理映射，提花織物三維組織分析等技術，論文主要對與紋理相關的技術作一定的討論，紋理分析運用頻譜、小波分析或馬可夫隨機場建模紋理圖像在空間上的分佈特徵，紋理基元的種類和其分佈。The qualitative work including : research the phase trajectory of the system 、 poincare map 、 power spectral and auto - correlation. the quantitative work including : calculation of ratio of period 、 calculation of fractional dimension and coefficient of lyapunov, especially ratio of period and the maximum lyapunov exponent. the results show that chaos occurs in the movement of system
定性的研究工作有：研究系統運動的相軌圖、龐加萊映射圖、功率譜圖和自相關函數圖；定量方面的研究工作有：周期比的計算、分維數的計算和lyapunov指數的計算，並著重進行了周期比和最大lyapunov指數的計算。The stability of period response of nonlinear rotor - bearing systems is analyzed by employing the newmark and shooting methods. the bifurcation rules of period response of elastic rotor system with multi - degree of freedom are obtained. the motion characteristic of the rotor system is determined according to the fractal dimension of poincare mapping of phase aspect and frequency spectrums at certain speed and physic parameter of rotor
對于這三個模型，本文採用了計算速度較快的newmark方法求解系統的響應，用poincare映射、軸心軌跡和頻譜圖分析各個轉子-軸承系統在特定參數下的運動特徵，通過分岔圖研究了轉子?軸承系統隨某些參數（轉速、不平衡量分佈、軸承質量等）變化時的系統響應。( 3 ) an algorithm for classification of texture image based - on spectrum histogram and self - organized feature mapping network in proposed
三、提出一種基於紋理譜直方圖和自組織特徵映射網路（ sofm ）的紋理分類演算法。Based this background, this paper studies the some non - linear dynamic problems existing in bearing - rotor system using numerical integral method. the results give some theoretical basis to the designs of similar systems and have specified engineering signifance
在此背景下，以軸承?轉子系統為研究對象，利用數值積分法和poincare映射並結合譜分析，研究了轉子動力學中的若干非線性問題，所得結果為有關旋轉機械的設計及故障監測與診斷提供了一定的依據。After collecting the characteristics of this signal in frequency domain, the samples are learned to train the constructed wavelet neural network ( wnn ) for realizing the mapping relationship between the fault and the spectrum characteristic, this method can be used for diagnosis of the unit faults efficiently
在對水電機組振動信號進行頻譜分析后，提取該信號在頻率域的特徵量，將頻譜特徵向量作為學習樣本，通過訓練，使構造的小波神經網路能夠反映頻譜特徵向量和故障類型之間的映射關系，從而達到故障診斷的目的。Based on comprehending the definition of chaos and its concepts, several description methods of chaos are discussed, including poicare mapping, power spectrum and lyapunov exponent, and so on
在理解混沌的含義和幾個概念基礎上，重點討論了混沌運動的幾種刻劃方法，包括龐加萊映射、功率譜與lyapunov指數等。分享友人