脈沖通信制 的英文怎麼說

中文拼音 [màichōngtōngxìnzhì]
脈沖通信制 英文
pulse communication system
  • 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
  • 通 : 通量詞（用於動作）
  • 制 : Ⅰ動詞1 （製造） make; manufacture 2 （擬訂; 規定） draw up; establish 3 （用強力約束; 限定; 管束...
  • 通信 : communication; communicate by letter; correspond
  1. That is, vibration caused by the first part of the command signal is canceled by vibration caused by the second part of the command. input shaping is implemented by convolving a sequence of impulses, an input shaper, with any desired command

    輸入成型通過把參考輸入信號和一系列脈沖進行卷積，得到成型輸入信號，而成型輸入信號作用於控制對象，其中這脈沖序列就是輸入成型器。
  2. This paper presents a method that chopping wave is done by switch devices which consist of three - level resistance regulating module and intelligence power module ipm, and which realizes constant - current discharge of storage battery. to achieve the intelligence control of the drive protection and the discharge process of ipm, the paper designs circuit formed by igbt threshold drive pulse pwm signals. ipm fault - blocking protection circuit and microcomputer 80c196. the devices can accurately control the 0 ~ 150a discharge current and the discharge time of the storage battery and calculate the releasing power

    實現蓄電池恆流放電過程智能控制是蓄電池放電裝置發展的必然趨，本文提出了一種通過三極電阻調節模塊和由智能功率模塊ipm為開關器件進行斬波從而實現蓄電池恆流放電的方法。為達到對ipm的驅動保護和放電過程的智能控制，文中設計了igbt門極驅動脈沖pwm信號形成電路和ipm故障封鎖保護電路及由單片機80c196為核心的微機控制器。本裝置能夠對蓄電池進行0 150a放電電流及放電時間的精確控制及釋放容量的計算。
  3. 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。
  4. Pulse code modulation communication system hierarchy

    脈沖編碼調制通信系統系列
  5. Based on mono - pulse radar system and the analysis of terrain echoes, a geometrical model of air to ground ranging is constituted. by using the signals received from the sum and difference channels of terrain follow radar, a group of the expressions for terrain echoes are educed and characteristics of these echoes are obtained. according to the characteristics of the echoes, the theory and method of pass zero detection of difference channel and its applications are discussed in detail

    針對一維單脈沖雷達體制，分析了地形目標回波特性；建立了地形跟隨雷達空地測距的幾何關系；利用雷達收發信號，導出了地形跟隨雷達和差接收通道的回波信號表達式，進行了波形模擬，得到了地形跟隨雷達的地面散射產生回波在時域中的特性；根據和差回波特性，闡述了差信號過零點檢測測距的原理和方法及工程實踐中的應用，並給出了真實雷達對外輻射試驗的結果，驗證了文中的模擬。
  6. 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。
  7. 1 m 0. 5, the phase - shifted angle 6 is controlled in term of sine law which makes the magnitude of resonant voltage track a reference sine voltage, and the resonant voltage is rectified, filtered, inverted and then the better sine - voltage output is obtained, theoretical analysis and experimental results show that for the resistive load and inductive load, the switches of leading leg of the phase - shift - controlled circuit are always turned on at zvs, and ones of lagging leg are turned on at zvs ( < 0 ) or turned off at zcs ( ( > 0 ), moreover, all switches in the low - frequency inverter are always turned on and off at zvs, the measured circuit efficiency for rated load reaches up to 88 %

    從功率單向流動角度出發，提出了一種lcc諧振型恆頻移相單相高頻鏈逆變電路拓撲，在調制系數0 . 1 m 0 . 5情況下，控制移相角按正弦規律變化，使諧振電壓脈沖列的幅值追蹤參考正弦電壓信號，經過整流、濾波、低頻逆變，從而獲得正弦度較好的輸出電壓。理論分析和實驗結果證明對于阻性負載或阻感性負載，移相全橋具有超前橋臂零電壓開通，滯后橋臂或者零電壓開通（ _ 0 ）或者零電流關斷（ _ 0 ）的軟開關特性，而低頻逆變器的各個開關均實現零電壓條件下的開通與關斷。
  8. By using a counter and an operation microprocessor, this paper analyses the measuring method and designs an instrument of edm sinking process in discharge state. this instrument takes samples of voltage, current signal and strong and weak of high frequency signals of detecting voltage amplitude, translates them into various time pulses in discharging state. and a counting unit turns these pulses into digital signals, then send them to a microprocessor. finally various discharge time percentages are sent to the control tache

    通過采樣電火花加工放電間隙的電壓、電流信號和檢測電壓幅值上的高頻信號的強弱，得出反映間隙放電狀態的各種時間脈沖，利用計數器分別對其計數，再送給單片機運算處理，輸出控制環節所需的各種放電狀態時間百分數。
  9. Abstract : by using a counter and an operation microprocessor, this paper analyses the measuring method and designs an instrument of edm sinking process in discharge state. this instrument takes samples of voltage, current signal and strong and weak of high frequency signals of detecting voltage amplitude, translates them into various time pulses in discharging state. and a counting unit turns these pulses into digital signals, then send them to a microprocessor. finally various discharge time percentages are sent to the control tache

    文摘:通過采樣電火花加工放電間隙的電壓、電流信號和檢測電壓幅值上的高頻信號的強弱，得出反映間隙放電狀態的各種時間脈沖，利用計數器分別對其計數，再送給單片機運算處理，輸出控制環節所需的各種放電狀態時間百分數。
  10. The controller hardware is composed of digital signals processing ( dsp ) system performing scr fire pulses control and mmi system providing input and output interface. dsp system and mmi system are connected by serial communication

    控制器的微處理系統採用雙微處理器結構，負責脈沖控制的dsp微處理系統和負責人機操作的微處理系統相互獨立，通過串列通信連接。
  11. The one - dimension effective fpk equation of colored noise serves as our starting point to evaluate the effect of noise color on communication system design. the theory of ber versus input snr per bit is developed and a new procedure to determine the system parameters that influence the minimum ber is proposed. it is shown that the communication system ' s performance is related to the turnable system parameters as well as the noise correlation time

    在指數相關高期色噪聲情況下，本文以一維有效色噪聲fpk方程作為研究的出發點，理論分析了限帶高斯色噪聲通道中脈沖幅值調制數字信號傳輸的誤碼性能，給出了非線性接收器的接收性能曲線，充分體現了噪聲相關時間的影響。
  12. 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。
  13. To suppress the clutter, noise and detect target, we adopt several advanced sp methods such as pulse compression, mti, mtd, cfar, amplitude - comparison angle measurement and ambiguity resolution, of which we emphase the algorithms of cfar and ambiguity resolution. two cfar algorithms, cell - averaging cfar ( ca - cfar ) and ordered

    為了抑制雜波、噪聲和檢測目標，採用了脈沖壓縮、動目標顯示、動目標檢測、恆虛警、單脈沖比幅測角和解模糊等較先進的雷達信號處理技術，並採用了多模式分通道處理方式。
  14. Chirp signal is a kind of pulse - compressed signal with large time - bandwidth products achieved through linear frequency modulation. it has high resolution in range because of its great bandwidth

    線性調頻信號是通過線性頻率調制獲得大的時寬帶寬積的一種脈沖壓縮信號，具有大的帶寬，因此有高的距離分辨力。
  15. Secondly the detection precision is only related to the synchronization phase but not to the amplitude of the mainline voltage because that it uses the optimized pulses synchronous with the mainline voltage as modulation signals. thirdly it decreases the requirement of the input low pass filter and eliminates the error resulting from the direct component and even harmonics of load current. the most significant merit is that it can eliminate the effect of a few low order odd harmonics and the detecting circuit is easy to be implemented

    模擬和實驗結果表明該方法的主要優點有：不需使用乘法器進行信號調制，調制信號採用與電網電壓同步的優化特定脈沖，其檢測精度只與同步相位有關，而與電網電壓幅值無關；降低了對輸入低通濾波器的通頻帶要求，直流和偶次諧波分量對檢測精度沒有影響；突出的優點是可以消除有限個低奇次諧波對檢測結果的影響。
  16. To realize nolinear excitation controller, it must be improved that the disposal speed of nolinear excitation control " s signal. with analyzing and comparing all kinds of microcomputer excitation controller, a new microcomputer excitation control scheme is offered that is based on dsp controller while the cpld chip is utilized for realizing the function of pulse trigger. it is described in detail that the method of realizing controllable silicon digital logic by verilog hardware describe language and the designed digital pulse trigger " s veracity was validated by digital simulation

    論文進一步針對非線性勵磁控制要求信號處理速度高、信息量大的特點，在對目前微機勵磁控制器分析基礎上，提出採用dsp控制器晶元作為核心處理器的微機勵磁控制器的解決方案，運用復雜可編程邏輯器件cpld晶元實現可控硅同步脈沖觸發單元，並簡要說明了verilog硬體描述語言和數字脈沖形成邏輯的方法，通過電路數字模擬對所設計的數字觸發單元進行了驗證。
  17. Although there have been many application instances in the field of input / output device technology, we need an specific project and technology route aimed at an given application. in this thesis, we combine the introduction and analysis of relative technology to describe the accomplishment of a coordinate collecting device which is based on incremental rotary encoder. this device is an specific device applied to collect the corrdinate displacement of ground image ’ s three - dimensional model created by full digital photogrammetric station. cpld chip and vhdl are applied in this device to carry out the following work : phase control of the electrical pulse created by incremental rotary encoder, counting the number of electrical pulse, controling the state of signal processing circuit, exchanging data between this circuit and pci control

    本文結合相關技術的介紹和分析，描述了一個基於增量式旋轉編碼器的坐標參量採集介面卡的實現，此介面卡是一種用於採集全數字攝影測量系統地面影像模型坐標位移量的專用設備，該設備採用cpld器件和vhdl語言實現增量式旋轉編碼器的脈沖信號鑒相和計數、信號處理部分的狀態控制以及和pci總線晶元ch365之間的數據交換和通信功能，同時該設備的驅動程序基於wdm模式，並且配置有結構良好的動態鏈接庫程序作為系統軟體和驅動程序之間的數據和控制交互中間介面，能夠方便地運行在windows98 / 2000 / xp操作系統平臺上，具有實時性強、工作穩定、通用性較好和性價比高等特點。
  18. The main content and creative work in this dissertation include : 1. simulate the echoes of the radar, namely produce the lfm signals with band width equaling 5mhz, time width in 9 s ~ 42 s and analyze them in frequency domain pulse compression. at the same time suppress the clutter and indicate targets

    本文完成的主要工作和創新之處有: 1 .通過模擬模擬回波信號，產生了帶寬為5mhz ，時寬在9 s ~ 42 s范圍內帶目標和噪聲雜波的lfm信號，並對其進行了頻域脈沖壓縮的分析，抑制雜波並顯示出目標。
  19. In this paper a multi - passage controlling tactic composed of infinity impulse filter is presented to solve the problem in theory, but actual effect must be verified by experiment in future

    文章嘗試採用由無限脈沖濾波器組成的多通道控制策略，從理論上解決源噪聲信號採集問題，其實質效果還有待於後續實驗驗證。
  20. Then we introduce pulse position modulation ( ppm ) using pn code and analysis its multi - access performance, system capacity and power spectrum density. on the basis of those analyses, we study the pulse shape and the anti - jamming ability of the system. at last, multiple access with pseudochaotic time hopping is introduce

    本文首先闡述了uwb脈沖通信系統的基本原理，重點介紹了用偽隨機碼跳時的ppm （脈沖位置調制）調制，分析了他的多址性能、系統容量和功率譜密度，在此基礎上研究了改進性能的發射信號形狀和系統抗干擾能力，最後介紹了偽混沌碼跳時的多址方式。
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