modulated pulse 中文意思是什麼

modulated pulse 解釋
已調脈沖
  • modulated : 改變了的
  • pulse : n 1 脈搏；有節奏的跳動；【動物；動物學】脈沖（波）；脈動。2 意向；傾向。3 【音樂】拍子，律動。vi ...
  1. By analysis, two kinds of caq are found : one is width - modulated countable pulse series, the other is frequency - modulated countable pulse series. furthermore, the method of generating caq is described and its double features is also proved

    通過分析找到兩種計數型模擬量：調寬計數脈沖串和調頻計數脈沖串，同時本文也闡述了計數型模擬量的產生方法，並進一步驗證了它的二象性特徵。
  2. The second, at the high frequency primary coil, when switch turn on with control signal ( the spwm pulse is modulated ), in the positive or negative semi - period of low frequency modulation signal, transformer coil with same direction voltage. the magnetic flux of transformer core will increase step by step. at the end, it leads to magnetic flux saturation

    二、在高頻變壓器原邊，當開關管接收控制信號脈沖列（經調制的spwm波列）導通時，在低頻調制信號的正半周或負半周內，施加在變壓器繞組上的是同一方向的電壓，變壓器磁芯中的磁通可能將級進地逐漸增加，導致磁芯飽和，造成磁偏或單向磁化，導致低頻電信號放大失真或由於很大的磁化電流而無法正常工作。
  3. Improvement of flow proportionality and dynamic characteristics of pulse - width - modulated solenoid valves

    驅動模式下螺管電磁閥動特性的優化方法分析
  4. In the send site, binary message sequence is modulated between pulse sequences, then took it into wireless channel

    發送端將二進制信息序列調制于脈沖序列的間隔中，然後送入無線通道。
  5. Traditional laser iff has poor security because of low frequency of laser beam coded pulse. this can be greatly improved when the pulses are modulated by continuous wave laser, but the power of this laser beam output is so low that it ’ s difficult to be detected and received by laser warning subsystem

    傳統的激光敵我識別器激光編碼脈沖頻率低，通信保密性差，使用連續波激光器經調制后激光編碼脈沖頻率高，保密性好，但輸出激光功率較低，難以達到激光告警分機探測接收的要求。
  6. Linear frequency modulated ( lfm ) signals as the most popular pulse compression signal are a typical kind of time - varying, nonstationary signals, so applying the wigner - ville distribution into lfm signals has more advantages than conventional methods

    雷達脈沖壓縮技術中所使用的線性調頻信號是一類典型的時變非平穩信號，採用時頻分析的研究方法處理線性調頻信號有著傳統方法無法比擬的優點。
  7. There are five parts are as follows : in part one, the concept of switching function is introduced first to establish the nonlinear mathematical model of the induction motor variable frequency speed adjustment system which is fed by a sine pulse width modulated ( spwm ) inverter and takes the effect of the main magnetic circuit saturation into consideration, then the low frequency oscillation of the system is simulated according to the model. next, from the view point of energy conversion of the inverter - induction system, a criterion for the low frequency oscillation is proposed to determine whether the system is in low frequency oscillation which is judged by whether the interval of the negative current component of the inverter input current is more than 1 / fc ( fc is the carrier wave frequency of the inverter ) or not

    首先引入開關函數概念，建立了正弦脈寬調制（ spwm ）逆變器供電異步電動機，考慮主磁路飽和時的變頻調速系統整體數學模型，模擬系統的低頻振蕩；其次從逆變器-異步電動機系統能量轉換角度出發，提出通過檢測逆變器輸入電流中負電流的間隔時間是否大於1 / f _ c （ f _ c為逆變器載波頻率）來判定系統是否出現低頻振蕩；最後的實驗結果驗證了系統低頻振蕩建模和判據的實用性和正確性。
  8. This article analyses the signal characteristics of several typical cw radars, and presents the principle and application of doppler radar. as one focal point, this article researches the generation and math characteristics of pseudorandom code modulated signal, analyses the spectrum of pseudorandom code phase modulation radar signal, and presents this kind of signal ' s application in distance and speed measurement. this article also researches the application of mono - pulse amplitude comparison radar in angle measurement finally, this article elaborates the working process of crs in uast

    本文分析了幾種典型的連續波雷達信號的特性，介紹了多普勒雷達的原理和應用；研究了偽隨機編碼信號的產生和數學特徵，著重分析了偽碼調相連續波雷達信號的頻譜，及其在雷達測距、測速方面的應用；研究了單脈沖幅度比較體制在雷達測角中的應用；最後，闡述了超近反導系統中復合體制雷達的工作過程。
  9. The pulse - width modulated ( pwm ) is the key technologyto acquire the high power factor. the document presents the principle of three - phase pwm, then analyzes and compares the several maturely control methods for pwm

    本文將交流電機理論中空間坐標系旋轉變換理論引入到pwm整流器的分析中來，建立了三相pwm整流器的統一的數學模型。
  10. The techniques with two different methods are classified as : the mode of pulse width modulated, and the difference of control signal. the advantages and disadvantages of each method is analyzed and compared, and where each method is more adapted to is pointed out. a type of switching power supply management ic based on current mode control method is designed which is a pwm boost converter

    本文全面分析、描述了dc - dc開關電源變換器的控制方法，並依據脈寬調制的方法何採用控制信號的選取對控制方法進行了分類，詳細闡述了各種控制方法的基本原理，分析比較了他們各自的優缺點，指出了每種控制方法所使用的場合。
  11. At last, an experiential power supply was made, and a series of experiments is done. a lot of high - frequency pulse current was superposed on dcen current, modulated the welding current waveform we required and optimized the energy distribution, which satisfied the basic requirement of cathode cleaning

    最後製作了一臺實驗電源，並進行了一系列的電弧實驗，通過在變極性電源電流dcen基礎上疊加一系列脈沖電流，調制出所需電流波形，實現輸出能量的最優分配，在滿足陰極清理的前提下，最大限度地提高焊接效率。
  12. At present, signal pulses produced by directly modulated laser diodes have been used in optical fiber communication systems. the experiment reveals that the optical pulses from directly modulated laser diodes are far from gaussian and have near - rectangular temporal profiles with much sharper leading and trailing edges, and then a super - gaussian model, which assumes that an incident optical pulse has a super - gaussian profile, may be more suitable

    但在實際的光通信系統中，人們常採用由直接調制半導體激光器產生的光脈沖作為信號脈沖，而實驗結果表明這種脈沖具有比高斯脈沖更為陡峭的前沿和后沿，其脈沖形狀更接近於超高斯分佈，並且通常還帶有一定量的啁啾。
  13. Raw pcm : raw pulse code modulated

    元脈碼調制
  14. Raw pcm raw pulse code modulated

    元脈碼調制
  15. In this dissertation, we systematically study the pulse - position - modulated pulse - sequence ( ppm - ps ) radar signal theory and its applications to radar / fuze systems

    本文系統地研究了脈位調制脈沖串雷達信號理論及其在雷達引信中的應用。
  16. Then the pulse is modulated by pwm. after the modulated signal through a low pass filter, we can get the change of the frequency that related to the capacitor

    對頻率變化的脈沖進行寬度調制，通過低通濾波就可以輸出頻率變化量，也就可以得到相應的加速度值。
  17. In the information environment of radar there are some signals such as regular and binary phase modulated pulse signal and linear frequency modulated signal are used widely

    在雷達信號環境中，最常見的信號包括常規脈沖調制信號、脈內二相編碼信號以及線性調頻信號。對這些信號的載頻測量在電子戰中具有重要意義。
  18. This paper presents an integrated comparison of object - detecting techniques, the techniques that base on millimetre wave frequency modulated pulse - doppler radar is chosen on the basis of the idiographic demand of the recws

    通過對車載目標探測技術的綜合比較，結合本報警系統的具體要求，選用了車載毫米波調頻多普勒雷達目標探測技術。
  19. A new pattern position sensitive detector is introduced, so the accelerometer has many advantages including high sensitivity, high resolution and quick response speed. a binary width - modulated pulse rebalance loop is applied in the accelerometer

    該加速度計引入了新型位置敏感探測器psd ，使其具有高的靈敏度、解析度和響應速度;同時採取了二元調寬脈沖加矩方式的再平衡迴路。
  20. A high - resolution method for frequency measurement is strongly introduced in the paper, which is aim at detecting the frequency of regular and binary phase coding modulated pulse signals with high frequency precision. considering the popularity of linear frequency modulated ( lfm ) signal in electronic systems, this paper then referred a radon - stft arithmetic to calculate the carry frequency of lfm signal. both of these methods referred above are implemented in the signal if detection software

    針對常規脈沖調制信號和脈內二相編碼調制信號，本文提出一種高精度的數字化測頻方法，以提高信號載頻測量精度;線性調頻信號作為一種典型的非平穩信號在各種領域應用十分廣泛，但對其載頻的數字化測量比較困難，本文利用圖像處理中的radon變換與信號時頻分析中的線性變換相結合的演算法來完成對其載頻的測量。
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