波沖電阻 的英文怎麼說
中文拼音 [bōchōngdiànzǔ]
波沖電阻
英文
surge resistance-
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。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。Water dielectric pulse power modulator has been widely applied because of its merits of high energy storage density, compactness, and capability to drive low impedance high power microwave sources. research for multi - pulse operation of high power spark gap switch with high current and comprehending its physical properties are the basis to study multi - pulse operation or repetitive operation of water dielectric pulse power modulator
水介質脈沖功率調制器具有儲能密度高，結構緊湊、與低阻抗微波源較好匹配的特點，因此得到廣泛的應用，但是受到高功率、大電流氣體開關的絕緣恢復的影響，水介質等低阻抗脈沖功率調制器的重復頻率運行或多脈沖運行受到較大的限制。The model considers peak value of lightning current, tower grounding resistance, tower style, line surge impedance, power frequency voltage and distance between towers
模型中考慮了雷電流幅值、桿塔沖擊接地電阻、桿塔具體形狀、尺寸、桿塔波阻抗、工頻電壓及檔距等因素的影響。Mechanical impact dynamics is used to analyse the production and spread of stress wave when hydraulic pile hammer hammerblows piles, the stress wave influence the course of driving pile. slender hammer that is equal to wave resistance of the pile can bring ideal stress waveform. when the hammer weight is constant, efficiency of driving pile can be increased by means of selecting drive cap and cushion pad of different rigidity to match the hammer according to various geological condition and the pile. the structure and principium of hydraulic system of double - acting hydraulic pile hammer with double cylinders is studied in detail in the paper, the hydraulic system and electric control system of six - ton - double - actin hydraulic pile hammer with double cylinder is designed on the basis of it
本文應用沖擊機械繫統動力學分析打樁過程中錘體與樁撞擊時應力波的產生、傳播以及該波對沉樁過程的影響。認為與樁等波阻的細長狀錘體能夠產生理想的應力波波形；在樁錘重量一定的情況下，可針對不同的地質情況和樁，通過選擇不同剛度的樁帽和樁墊與其匹配來提高打樁效率。本文對雙缸雙作用液壓打樁錘液壓系統的結構和工作原理進行了深入的研究，並在此基礎上設計出六噸雙缸雙作用液壓打樁錘的液壓系統和電控系統。After the discussion of the numerical simulation method based on the fdtd method and the pml technique, the motions of the charges and the electrical field lines were first employed to describe the radiation procedures of the pulse electromagnetic waves. then the causes of how the charges are accelerated and how the motion status of the charges are maintained were further studied from the angle of interaction of charge and field. after these analyses, it was pointed out that the pulse radiation is due to the suddenly occurred time - varying electrical field ( displacement current ) in the open space. this view was further evidenced by two examples : one is the partly resistance loaded antenna, the other is the partly curved antenna. the radiation procedures of the pulse electromagnetic waves of many different situations were simulated throughout this paper with the contours and waveforms of electric field given. these figures are very helpful to the understanding of the radiation mechanism of the pulse electromagnetic waves
在討論了基於時域有限差分法和完全匹配層技術的數值模擬方法之後，首先從運動電荷和電力線的角度直觀地描述了脈沖電磁波的輻射過程，然後進一步從場與電荷相互作用的角度分析了天線上電荷是如何被加速以及如何維持其運動狀態的，指出了開放空間中突然出現的時變電場（位移電流）是脈沖電磁波輻射的根本原因.文中還對局部電阻加載的天線和局部彎曲的天線進行了研究，以進一步說明上述觀點.對多種情況下的脈沖輻射過程進行了數值模擬，並給出了電場的等高線和空間波形圖，這些圖形對理解脈沖電磁波的輻射機理非常有益The design of the circuit ? key parameters including pulse width in the level shifter part and delay time of the filter circuit, and the necessity to add a limiting current resistor at source the ldmos were emphatic analyzed. author finished the design of each sub - circuit
對電路關鍵參數高低壓電平位移脈沖寬度、高端濾波電路濾波寬度的設計及在ldmos源端加入限流電阻的必要性進行了重點分析，完成了各單元電路的設計。It has been shown by our calculations that conductor loss is greatly reduced under velocity matching with relatively thick coplanar waveguide electrodes and thick buffer layer, but the characteristic impedance can not match with that of the external circuit at the same time, and the modulation bandwidth is confined in this case
然後，用一般的橢圓積分計算了普通共面波導型調制器的有效折射率、特徵阻抗和導體損耗系數。通過計算發現，採用厚電極和厚緩沖層結構，在實現速度匹配的情況下，可以大大減小導體損耗，但是由於阻抗不能同時滿足匹配，調制帶寬受到限制。At the beginning, the impedance match of the connected circuit is introduced, then discuss about how to obtain the response of the " kick - out " impulse and the methods of simulation realization
該部分從對接電路的阻抗匹配講起，敘述了獲取「 kick - out 」脈沖的響應波形的原理及模擬實現方法。The maximum output current on a 60uh inductive load was 1660a, and the maximum peaking voltage on resistive and capacitive loads was over 100kv in our experiments
我們還利用爆炸沖擊波加載技術對pzt95 5鐵電陶瓷進行了實驗研究，在60 h的電感負載上得到1660a的脈沖電流，在電阻和電容負載上獲得100kv 、 2分享友人