矩形脈沖 的英文怎麼說

中文拼音 [jǔxíngmàichōng]
矩形脈沖 英文
rectangular pulse
  • 矩 : 名詞1. （畫直角或正方形、矩形用的曲尺） carpenter's square; square2. （法度; 規則） rules; regulations 3. [物理學] moment
  • 脈 : 脈名詞1. （動脈和靜脈的統稱） arteries and veins2. （脈搏的簡稱） pulse 3. （像血管的組織; 連貫成系統的東西） vein
  1. 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。
  2. Based on the method, this dissertation deals with several kinds of signals including cosine wave ( cw ), linear frequency modulated ( lfm ) and multi - component signal, furthermore the systematic comparison of estimation effect among cwt and several other usual methods as well cramer - rao bound ( crb ) is given

    基於上述方法，文中分別對單頻矩形脈沖信號、線性調頻脈沖信號以及多分量信號進行了瞬時頻率估計，並與其他幾種常用瞬時頻率估計方法的性能以及crb進行了系統比較。
  3. Analysis of compression characteristics of gaussian signal pulse in semiconductor optical amplifiers by utilizing rectangular control pulse

    矩形控制脈沖在半導體光放大器中對高斯信號脈沖的壓縮效應分析
  4. The calculated results show that, for low energy protons ( energy less than several decade mev ), the contribution of proton nuclear reaction to energy deposition can be neglected ; while for high energy protons ( energy greater than several hundred mev ), the great difference appears for the above two cases. this gives us an indication that the contribution of proton nuclear reaction to the energy deposition must be concerned for high - energy protons. the propagation process in material of thermal shock wave induced by high - energy intense - current pulsed proton beam irradiation is calculated for several different proton energies

    對于入射能注量為418 （ j cm ~ 2 ）脈沖寬度為0 . 1 s的矩形脈沖強流質子束，計算結果表明，由於質子束能量不同，引起的初始熱激波（ 0 . 1 s時刻的熱激波）有單峰結構，也有雙峰結構，不同能量的強流質子束引起的熱激波在傳播的過程中都會出現明顯的彈性前驅波。
  5. We use this conclusion in our program. the last, the principle and the precision of the detection of range, speed and angle is analyzed and discussed theoretically. using the precision formula of rectangle pulse waveform, we programming the software to accomplish the computation simulations

    在論文中還對雷達的距離測量、速度測量和角度測量的原理以及它們的測量精度進行了理論分析和計算，並且得出了在矩形脈沖波形的時候雷達測量精度的計算公式，並且用程序進行了模擬計算。
  6. In the calculation, the energy deposited in aluminum by proton beams is first calculated by m - c simulation, then a 1 - d elastic - plastic fluid model is used to simulate the following thermal shock wave process as a result of thermal - mechanical effect by proton irradiation. the shape of proton is taken as a rectangle pulse with a width of 0. 1 microseconds, the energy flux o

    對於3mm的鋁材料，入射粒子束為矩形脈沖（脈寬為0 . 1 s ）的情況下，計算得到了電子束、質子束輻照引起鋁材料斷裂的能注量閾值與入射電子束、質子束能量的關系曲線，該曲線存在最小值，分別對應6mev的質子束的34 . 7j cm ~ 2和0 . 35mev電子束的42 . 1j cm ~ 2 。
  7. Second, i transform seismic - electrical data and volcano data worldwide from 1991 to 1999 to appropriate statistic models and analyze them by using the theories of random process and correlation. the results of the study testify that it is correlative between the seismic - electrical abnormal rectangle pulsation signals and volcano eruptions. so the study is a useful exploration for which whether we can monitor and observe worldwide volcanic activity in the whole

    接下來應用隨機過程與相關理論的知識，以1991年1月1日至1999年12月31日為統計時間段，以北京工業大學地震研究所南北方向地電脈沖儀所記錄到的地電異常矩形脈沖信號和全球范圍內的火山噴發事件為研究對象；抽取適合分析、又具物理意義的多個統計模型；並對信號模型與噴發模型間進行了詳盡的相關性分析。
  8. The feedback of the output voltage is the major control loop. to achieve better frequency response and disturbance rejection of the input voltage, a input voltage feed - forward system is introduced in control loop. the duty - cycle of pwm applied at the gate of power mosfet is modulated by both input and output voltage

    該晶元採用的控制方式為電壓型pwm （脈沖寬度調制， pulsewidthmodulation ）控制方式，以輸出電壓反饋作為主要控制參量，同時為了提高晶元對輸入電壓擾動的響應速度，採用了輸入電壓前饋方法，將輸入電壓因素引入了反饋控制環中，通過對輸入輸出電壓的檢測，控制加在功率mos管柵極電壓上矩形脈沖的占空比，進而調節輸出電壓。
  9. Due to great advantage of the excimer laser in photoelectron material, photoelectron technology research, so in this thesis, a xecl excimer laser is designed in order to solve some problem in semiconductor film, cmr film, quartz film and other kind of film application, optical etching field, interaction between laser and material, material plasma study. the parameters of the excimer laser is e also measured and analyzed

    因此本文以氣相沉積、外延生長、巨磁薄膜、金剛石及其它薄膜制備及后續的光刻，激光與物質的相互作用，等離子體研究為目的，研製獲得了激光脈寬18ns ，單脈沖能量150mj ，矩形光斑大小2cm 1cm ，束散角3mrad ，最高重復頻率5hz的xecl準分子激光器。
  10. Abstract : the principal characteristics of pulse power supply with large current are described. the survey of pulse electrochemical machine and the processing technique are introduced. some application examples of pulse electrochemical machining in die - sinking are given

    文摘:簡述了大電流矩形波脈沖電源的基本特點；介紹了脈沖電解機床及加工工藝概況；列舉了脈沖電解加工工藝在模具加工中的應用實例。
  11. According to the mechanism characteristics of the ac motor, with zero - voltage switching technology, the pdm converter mathematical models both the pwm and rectangular wave control mode are given in this paper. and the voltage and current harmonic analysis and the simulation waveforms of the output voltage, current and power are also described respectively

    根據交流電機在恆轉矩區和恆功率區的特性，結合零電壓開關技術，分別給出相應的脈寬調制控制（ pwm ）方式和方波控制方式下的高頻交流脈沖密度調制變頻器的數學模型，電壓和電流的諧波分析以及輸出電壓、電流和功率的模擬波形。
  12. Q - switching test of e - o modulator was carried out, the results displayed regular rectangular optical pulse figuration without any acoustic ringing, the leading and trailing edges is 5 ns

    製作的電光開關的光斬波實驗，結果顯示出正常的矩形開關光脈沖，上升和下降沿都是5ns ，看不出任何振蕩現象。
  13. The goal of the filter is to improve the sensitivity of an optical receiver by optimally filtering a communication signal. in this paper we calculated the temporal response of the matched filter, the commonly used f - p filter, as well as the matched weak ofbg filter. we find that the reflected pulse of weak ofbg closely resembles the triangular shape characteristic of a perfectly matched filter

    論文計算了通信系統中矩形光脈沖信號經強、弱ofbg 、匹配光濾波器、 f - p濾波器的輸出光脈沖波形，經分析比較后發現：弱ofbg和理想匹配光濾波器的輸出信號波形極其相似，不存在碼間干擾，而f - p濾波器的輸出波形存在比較嚴重的碼間干擾。
  14. Zmlt series pulse jet cartridge filter is the column dust collector which can be use in a much more higher air volume range

    簡介： zmlt系列脈沖濾筒式除塵器是一種風量應用范圍較大的矩形除塵器，應用於操作壓力要求不高的條件下。
  15. The dynamic matrix control algorithms based on finite impulse response are studied. the model errors are defined in the form of upper and lower bound and the error square sum of impulse response coefficients of single - input / single - output systems. the robust stability conditions are proposed for closed - loop systems using dmc in the form of lmi, which can assure the closed - loop system using dmc algorithm to be asymptotically stable, when the coefficients of characteristic polynomial do n ' t satisfy jury ' s dominant coefficient lemma

    浙江大學博士學位論文4 .研究了基於脈沖響應模型的動態矩陣預測控制田mc ）演算法，針對單輸入、單輸出系統可能出現的預測模型誤差，分別以脈沖響應系數上下界和脈沖響應系數誤差平方和的形式對預測模型的模型誤差進行定義，根據該定義以線性矩陣不等式的形式分別提出了閉環系統魯棒穩定判據，當閉環多項式系數不能滿足j切嘆主系數定理的情況下仍能保證系統閉環穩定。
  16. Abstract : in this paper, we study the random equation to elastic caminal rectangle plate under single concentrated random load by random vibration theory, and discuss the dynamic response to it by separating the variable, and study the frequency response function and unit pluse response function to the load and response

    文摘:運用隨機振動理論，推導了彈性矩形薄板在單個隨機集中載荷下的振動方程，並用分離變量法討論了其動力響應，研究了對應于激勵與響應的頻率響應函數和單位脈沖響應函數。
  17. When the stationary working current is lower than the critical current of the electromagnetic - elastic system, a numerical program is established to simulate the dynamic responses of the deformation of the current - carrying magnet subjected to a pulse current with rectangular shape

    結合其超導載流磁體的實驗結構，給出了超導磁體在不同穩態工作電流（即低於穩態的磁彈性失穩臨界電流）作用下受到矩形脈沖電流作用時的磁彈性動力響應的數值模擬結果。
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