phase transfer function 中文意思是什麼
phase transfer function
解釋
相位傳遞函數-
Superficially it is quite safe to phase advance an accelerometer signal as the error signal has been filtered by the servo and the alrframe transfer function.
從表面上看，因為誤差信號已被伺服機構和彈體傳遞函數濾波，所以讓加速度計信號經相位超前網路是不會有問題的。 -
This paper starts the research of the liquid floated pendulous accelerometer testing system according to the engineering. at first, this paper gives the brief introduction of the history and present status of accelerometer and its testing technology, the working principium and math model of the liquid floated pendu - lous accelerometer, and then, decides the binary width pulse force retrim loop as the design proposal of testing system, researches the transfer function of every part in the system emphasizly, analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system, and designed the correcting net, analyses the basal problems such as resolution, sampling restraint, precision and so on, designs the hardware testing circuits such as preamplification, band - pass filter, alternating amplifier, phase sensitive demodulatorn, pulse - width modulation, frequency scale circuit, moment current generator. finally, using the graphics program language labv - iew which is designed for testing field especially by ni accomplishes the solfware design of testing system, realized the testing functions
首先對加速度計及其測試技術的發展歷史和現狀，液浮擺式加速度計的工作原理和數學模型等作了簡要的介紹，然後確定了以二元調寬脈沖再平衡測試迴路為設計方案，並從控制理論的角度進行了分析，著重研究了系統中各部分的傳遞函數，利用系統開環傳遞函數分析了系統的穩定性，同時設計了系統的校正網路;分析了二元調寬脈沖再平衡測試迴路的解析度、采樣約束以及測試精度等基本問題，並按照系統分析的結果設計了包括前置放大、帶通濾波、交流放大、相敏解調、脈寬調制、頻標電路以及力矩電流發生器等測試系統各部分硬體電路，驗證了電路的正確性，最後按照測試系統的要求，採用了美國ni公司專為測試領域所開發的虛擬儀器工具? ? labview作為測試軟體開發工具，利用該圖形化編程語言完成了測試系統軟體部分的設計，實現了測試功能。 -
It is a new tool to detect and observe the structure and status of underground media by accurately measuring its transfer function through sinusoidal elastic wave accurately controlled in frequency and stable in phase
它是使用一種精密控制頻率和相位穩定的彈性波，對發射和接收兩點間的傳遞函數進行精密測定從而監視和觀測地下構造和狀態的一種新型手段。 -
The description was translated from the transfer function to the phase plane before studying control algorithm of sliding mode on the complex temperature object ( cto )
在對復雜溫度對象（ complextemperatureobject / cto ）進行滑模控制演算法的研究之前，把該類對象的傳遞函數描述轉變為相坐標描述。 -
Furthermore, the constraint condition of the transfer function at the zero frequency and the phase invariability condition of transfer function are presented
與傳遞函數極點的理論關系，得到了傳遞函數低頻約束條件和傳遞函數相位不發生畸變的補充條件。 -
Based on the unified recursive formula, the four algorithms included in this study are the central difference method, the newrnark ' s method, z - transform method, and duhamel ' s step integral method. the accuracy, the phase and other existent problem are studied in this paper. it is proved in this paper that the recursive parameters b1and b2are relate to the poles of theoretical transfer function
分析中可以發現，中心差分方法， newmark中點加速度方法、 z變換方法及duhamel逐步積分法在精度范圍內其計算相位是沒有畸變的，中國地震局工程力學研究所頃土學位論文一但是中心差分方法， newmark中點加速度方法隨著采樣間隔及系統自振頻率的增大，系統的固有自振周期被改變，其傳遞函數的共振區域與理論傳遞函數的共振區域會發生分離。 -
It ’ s known from the transportation function that the dispersion can only influence the phase of optical pulse ’ s spectrum, which can be easily described by a frequency transfer function
該方程表明:色散效應只會影響頻譜的相位，而對頻譜的強度分佈沒有影響，而且色散效應可以簡單的由傳遞函數表示出來。 -
As the dispersive influence can be easily described by a frequency transfer function, the feasibility of measuring the function with the g - s algorithm is researched numerically in the next part. from the results of simulation with fibers with different length and pulses with different width, it ’ s known that the convergence of the algorithm is related to the difference between the input and output pulse. then, the influence of attenuation and self phase modulation of fiber is discussed, and the influence of the delay phenomenon and fitted polynomial is also analyzed
通過對不同光纖長度和不同輸入脈沖脈寬的計算，得到了g - s演算法的收斂性與輸入波形和輸出波形之間的關系;在此基礎上，通過對光纖損耗、自相位調制的模擬，分析了損耗和自相位調制對光纖傳遞函數測量的影響;本文還分析了波形測量中的拖尾現象和多項式擬合對測量的影響，進而，對利用g - s演算法進行單模光纖傳遞函數測量的可行性進行了闡述。 -
Furthermore, in effective frequency - band, the transfer function can not accurately simulate the theoretical transfer function, especially for phase property. it shows that kanamori ' s method is not a good one
調整后的單邊差分方法在有效的計算頻帶內仍然不能較好的模擬理論傳遞函數尤其是相位特徵，這說明kanamori等人的方法並不是一個很好的方法。 -
The thesis analyses the effect of phase shift control and the utilization of the transformers primary sides saturable inductor to the transformers secondary sides voltage duty cycle, and basic on the buck converter s small signal ac model the converter s model is deserved, and infers control to output transfer function
論文通過分析移相控制方式和高頻變壓器一次側的飽和電感對高頻變壓器二次側方波電壓占空比的影響，在buck變換器小型號模型的基礎上建立了帶飽和電感的移相控制零電壓開關全橋變換器的小信號模型，推導出控制到輸出的小信號傳遞函數。 -
Phase transfer function ptf
相位傳遞函數 -
Moreover, a concept model for the service market, a detailed analysis on the service function on telecom products market and its economic and social benefit have been designed and made in this paper. furthermore, it formulates the developing strategies for the telecom service market in consideration of many aspects such as the developing phase and frame of the service market, service model, market strategy, combination of service and market and future developing direction, etc. the paper also analyzes the example of service system of foreign telecom suppliers. the suppliers should provide low - cost and high - value service for telecom operators, and help the operators to strengthen their core competition ability for the enterprises, at the same time, the suppliers will transfer their service model from present open model to a new value added model gradually
本文從電信產品服務的現狀出發，深入研究了其存在的問題和採取的相關對策，設計服務市場的概念模型，詳細分析了服務對電信產品市場的作用及其所產生的經濟、社會效益，並從服務市場的開發階段、電信業的服務市場架構、服務模式、供應商的服務市場戰略、服務與市場融合及服務市場未來發展方向等方面重點闡述了電信服務市場的開發策略，並進行了相關國外電信供應商的服務體系實例分析，說明供應商應為運營客戶提供低成本、高增值的服務，協助其提升企業核心競爭力，同時供應商的服務模式也將從現有的粗放型逐步轉換成有償增值服務的新模式，通過該新模式運作力求客戶滿意與公司效益的平衡，在保證客戶滿意的原則下，既增長客戶所需求價值，又能同時增強公司的核心競爭力，力求實現客戶滿意和公司滿意的雙贏目標。 -
The accurately controlled signal source generates sinusoidal elastic wave accurately controlled in frequency and stable in phase to " illustrate " underground media. time signal stacker receive signal by stacking and doing fft to measure the transfer function of media. " sompi " cepstrum method retrieve group velocity travel times and decayed factors of wave element from observational data of transfer function in a limited frequency window
精密可控震源用於產生頻率精確相位穩定的正弦彈性波以照射地層內部，信號疊加器通過對接收信號進行疊加和進行傅立葉變換的方式實現對介質傳遞函數的精密測量， 「存否」倒譜方法能夠根據一段窄帶頻域傳遞函數數據獲得時域上各個波成分的群速度傳播時間和介質衰減因子。 -
The small - signal model in main circuit are built by using average circuit model. the relationship of each small signal and efficiency duty cycle are described completely. magnitude - frequency characteristics and phase - frequency characteristics of each main transfer function are got
本文分析了全橋移相zvspwmdc - dc變換器的基本原理，運用平均等效電路法建立了主電路小信號模型，並詳細分析了各小信號變量與有效占空比之間的關系，得到了各主要傳遞函數的幅度和相位頻率特性。 -
By comparing linear and digitized pll ’ s phase - transfer function, we obtained the relations between the two type pll ’ s parameters, thus gives out a scheme of digitized pll ’ s design. then the paper introduces the operating principle of the digitized costas loop used in spread spectrum communication systems
通過模擬鎖相環與數字化鎖相環的相位傳遞函數之間的聯系，推導了模擬鎖相環與數字化鎖相環各參數之間的關系，得到了設計數字化鎖相環參數的方法。
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