相對功率電平 的英文怎麼說

中文拼音 [xiāngduìgōnglǜdiànpíng]
相對功率電平 英文
relative power level
  • 相 : 相Ⅰ名詞1 （相貌; 外貌） looks; appearance 2 （坐、立等的姿態） bearing; posture 3 [物理學] （相位...
  • 對 : Ⅰ動詞1 （回答） answer; reply 2 （對待; 對付） treat; cope with; counter 3 （朝; 向; 面對） be tr...
  • 功 : 名詞1 （功勞） exploit; merit; meritorious service [deed]: 戰功 military exploits; 立功 render me...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 電 : Ⅰ名詞1 （有電荷存在和電荷變化的現象） electricity 2 （電報） telegram; cable Ⅱ動詞1 （觸電） give...
  • 平 : Ⅰ形容詞1 （沒有高低凹凸 不頃斜） flat; level; even; smooth 2 （高度相同; 不相上下） on the same l...
  • 相對 : 1. （面對面） opposite; face to face 2. （非絕對的） relative 3. （比較的） relatively; comparatively
  1. The carrier wave is modulated directly by the baseband signal at several frequency point in l band and s band. firstly, this paper clarifies the theory of i / q modulation, elaborates evm and acpl, and analyzes the effect of amplitude and phase unbalance and dc offset on evm. secondly we review the basic principle of phase locked loop and it ’ s composing parts, including the basic conception and design method of pll frequency synthesizer, especially introduce the charge pump pll frequency synthesizer in detail

    首先，在闡述i / q正交調制基本原理的基礎上，通過對誤差矢量和鄰近通道功率泄漏的詳細分析，定性、定量地討論了各種非理想電路因素（如相位不平衡、幅度不平衡、直流偏差等）對調制器性能的影響;其次，介紹了鎖相環的工作原理和基本組成部分，包括鎖相環的設計和環路濾波器的設計，特別詳述了電荷泵鎖相頻率源;第三，介紹了採用直接調制技術模擬衛星信號的射頻前端的設計;最後，對整個直接射頻調制系統進行測試，結果基本上達到了課題要求。
  2. The control motors in the well traction robot require high temperature resistant, quick response, small volume and large power density. because coreless dc motors uses ironless - rotor, the inertia and inductance is very small, mechanical time constant is less than 28 milliseconds, several products can attain in less than 10 milliseconds. its weight and size are 1 / 3 - 1 / 3 less when compared with an iron core motor of same power

    水平井牽引機器人對控制電機不僅有耐高溫要求，而且有響應快、體積小、能量密度大等要求，而空心杯電樞直流電動機由於無鐵心，故慣量和電感均大為減小，機電時間常數小於28ms ，部分產品可以達到10ms以內;與同等功率的鐵芯電機相比，其重量、體積減輕1 / 3 - 1 / 2 ，是低慣量電機中性能最好的一種。
  3. On the base of widely investigating and researching, author deems that the conventional reactive power compensation devices used by consumer had many defects with among others : lower response time, remaining residual voltage on the compensation capacitors, and so on. because of existing improper trigging time, it is impossible to realizing balance compensation for 3 - phrase unbalance loads

    本文在充分調研的基礎上，認為目前採用的傳統的無功功率補償裝置存在響應速度慢、觸發時刻不合適、補償電容器上有殘壓、不能實行三相平衡補償、對電網產生污染、不能消除負荷本身產生的高次諧波等弊病。
  4. Under windows nt and labview development environment, using the linear fit module, exponential fit module > general polynomial fit module of labview to design a method for fitting the experiment data, the results of curve fitting indicate that the purpose of general polynomial fitting is better than the rest. separating the equivalent input impedance of magnetostrictive transducers without stimulate current from input impedance of it with stimulate loop based on the results of curve fitting, and determining the syntony frequency and electric simulation network parameters of magnetostrictive transducers by this input impedance. finally, with labview network functions, realizing magnetostrictive transducer electric simulation system based on web server and discussing a scheme for this system network by datasocket. the method of this paper can more accurately determine the syntony frequency and electric simulation network parameters of magnetostrictive transducers than the testing method of syntony & anti - syntony. at the same time, discussing virtual instrument measurement system and how to realize magnetostrictive transducer electric simulation network system by labview network functions of network virtual instrument measurement development environment

    在windowsnt系統環境和labview虛擬儀器技術開發平臺下，首次利用labview中的直線擬合模塊、指數擬合模塊以及多項式擬合模塊，設計了一種對實驗所得數據進行曲線擬合的方法，對三種擬合方法進行了比較，曲線擬合結果表明，多項式擬合方法相對于其它兩種擬合方法效果更好；根據曲線擬合的結果可從帶激勵線圈的磁致伸縮換能器的輸入阻抗中分離出磁致伸縮換能器鐵芯在無激勵電流時機械振動形成的等效輸入阻抗，並由此輸入阻抗確定了磁致伸縮換能器的諧振頻率及其電氣模擬網路參數；最後通過labview提供的網路功能，實現了基於web服務器的磁致伸縮換能器電氣模擬虛擬儀器測試系統，並探討了通過datasocket技術實現該系統網路化的方案。
  5. This paper focuses on the control strategies to improve the performance of the three - phase ac - dc pwm voltage - source - converters ( vsr ) under unbalanced power supply. the problems such as negative sequences current, voltage and current harmonics and un - constant ( un - smooth ) power flow from ac to dc side are discussed in this paper. the analytical solutions for negative sequence current and harmonic current elimination are obtained by fully feed - forward of negative sequence voltage and producing a non - harmonic current command of the inner - loop

    電網不平衡時，基於電網平衡為約束條件設計的三相vsr將出現不正常運行狀態，比如三相vsr交流電流中出現負序分量，使交流電流嚴重不對稱；直流電壓和交流電流中出現非特徵諧波分量，使直流電壓和交流電流波形發生嚴重畸變；三相vsr從電網吸收不平衡的瞬時功率等一系列問題。
  6. Design considerations of the high power s - band rka are described, by using electron beams of voltage - 600kv, current - 5000a, and the numerical simulations for three kinds of the rka output structures are given. the three kinds of the output strctures are single - gap standing - wave ( sw ) cavity, traveling - wave ( tw ) output structure, and two output structures ( single - gap + traveling - wave structure ). under conditions of using two output structures, the results show that the instantaneous peak power obtained from sw output cavity and tw output structure is respectively 2. 4gw and 2. 1gw, the both power average of 0. 96gw and 0. 93gw, i. e. the s - band rka of two output structures generates peak output power of 1. 89gw at a frequency of 2. 85ghz

    從數值模擬中得到雙輸出結構的微波功率輸出結果為:駐波輸出的瞬時功率為2 . 4gw （周期平均為0 . 96gw ） ;行波輸出結構輸出瞬時功率為2 . 1gw （周期平均0 . 93gw ） ，就獲得了頻率為2 . 85ghz的微波輸出。本文簡要的描述了電磁軟體（ magic ）對速調管輸出腔體進行了模擬，並對相應的模擬方法進行了評述。
  7. A x - band six - cavity tro is studied. with the voltage 760kv 6ka and the magnetic field 2. 6t in the simulation, output power is about 1. 5gw is obtained, and interaction efficiency is 31 %. a noveland high accurate numerical synthetic technique is presented for determining the high frequency characteristics of six - cavity with open boundary

    對粒子模擬的輸出微波功率的作出診斷，找到讀取微波功率快速有效的方法：在電場和磁場同相的前提條件下，對時域波形進行傅立葉變換，微波功率頻域的二倍頻所對應的幅度即為微波x波段渡越輻射振蕩器的理論和實驗研究平均功率的大小。
  8. With promulgation and obliging actualization of iec 1000 - 3 - 2 etc. international standards, power factor correction ( pfc ) technique become a hotspot of research in power electronics field. based on average current mode, the paper introduce the design and implementation of a fully digital controlled single - phase boost power factor corrector with fast response. the control - loop circuit is realized using digital control and the corrector can tend to unity power factor, lower current harmonics and high transfer efficiency

    本文在平均電流模式控制的有源功率因數校正技術的基礎上，設計了一種控制電路基於數字信號處理器（ dsp ） 、主電路採用boost變換器拓撲結構的全數字單相功率因數校正器，用數字電路代替傳統的模擬電路來實現對整個迴路的控制，最終使得校正器具有輸入功率因數接近於1 、低電流諧波以及高轉換效率的特性。
  9. In practical studies, finally, a hybrid active power filter based on the digital signal processor ( dsp ) and intelligent power module ( ipm ) was set up, including a cycloconverter acem. based on the experimental set - up, plenty of experimental studies were conducted. the experimental results demonstrate that the self - adaptive technique, the topology of series connected hybrid power filter and the corresponding significant technologies described above are feasible and practical

    最後，實際研製了一套以dsp （高速數字信號處理器）和ipm （智能功率模塊）為核心的小功率混合型有源濾波裝置，在交交變頻acem實驗平臺上進行了全面的實驗研究，充分驗證了本文所提出的自適應同步相關濾波技術、優化混合型濾波器拓撲結構和有關的關鍵性技術的正確性和實用性，從而從理論到實踐全方位、成功地實現了對交流勵磁發電機輸出電力諧波抑制的研究。
  10. In view of the present situation, in this paper, a new moisture analyzer which combines infrared drying oven and electronic balance is proposed takes dsp as the information processing unit. it presents the instrument structure and the hardware design of the system. it actualizes the temperature real time control in the drying equipment through controlling the power of the heater element and taking an complex control method

    針對這一現狀，本文提出了一種將紅外乾燥箱和電子天平相結合，利用dsp作為信息處理單元的水分測定儀;給出了儀器結構和dsp系統的硬體電路設計;研究通過對加熱元件的功率控制實現乾燥箱的溫度控制，採用智能復合控制策略對乾燥箱的溫度進行實時控制，乾燥箱的溫度達到105的時間可由單純pid控制的2分鐘減少到1分鐘，且控制精度高。
  11. Through power transmission, prism refraction and beam shifting experiments, various electromagnetic characteristics, such as refractive index, loss and s parameters, and various shaped left - handed material samples could be measured and verified between each other. 2. the beam shifting experiment is designed and realized to further verify the lh properties

    通過功率透射、棱鏡折射和波束位移三種實驗平臺，可以對多種形狀的異向介質材料的折射率、損耗等電磁特性進行準確的測量和相互驗證； 2 、提出了波束位移實驗以進一步驗證介質材料的特性。
  12. The author ? major contributions are as follows. 1. with the performance requirement ( the pattern of the antenna, the rang of scanning angle, the maximal sidelcbe level and the beam ~ vidth ) givcn, a method is presented to determine the basic parameters of a serpentine feed, which includes the distance and ~ vaveguide length bet ~ veeii t ~ vo couplers, the size of the arrays and the number of components

    根據天線的工作頻帶、掃描范圍、副瓣電平、半功率寬度等技術指標要求，給出了確定波導慢波線基本結構尺寸的計算公式，即對相鄰單元之間的空間距離、耦合器之間的饋線波導長度、陣列的大小和單元數的計算。
  13. This paper presents a method of test, estimation and predication of some state parameters of the power unit in power and electric equipment, these parameters can be temperature, voltage, current and so on ; when attaining the values of these parameters at the next state, whether the power unit will go into the malfunction or not can be knew, according to the result, some measures can be made ; by controlling the values of correlative parameters, the unit could be maintained in its optimal running status ; so the damage to the power unit can be prevented, the running quality of the driving system can be guarantied, and the optimized control level of the system can be improved

    本論文提出了一種利用預測估計的方法，對電力電子設備中的功率器件的某些主要狀態參量（如：溫度、電壓和電流）進行測試、估計並預測，從而得出未來的運行狀態；然後據此判斷該功率器件是否已進入故障范圍，以便提前採取措施，通過對相關參數的調整來保證功率器件始終工作在最佳狀態；這樣，既避免了功率器件損壞的發生，又避免了驅動系統故障狀態的出現，明顯地提高了系統優化控制的水平。
  14. Aiming at the feature of cm interference in power converters, a new approach ? intrinsic dynamic nodes potential balance is proposed. by building node pair with balance potential and making use of the intrinsic stray capacitor of power semiconductor devices, the cm current can be suppressed effectively

    在對共模干擾建模的基礎上，提出了內在動態節點電位平衡的思想，其思路是通過在電路內部構造動態電位平衡節點對，並利用電路中功率器件固有的對地分佈電容使得電路中的共模干擾電流互相抵消，從而抑制功率變換器的共模emi 。
  15. The resonance network is connected to the gate, then the output and input matching network is designed to satisfy the oscillation criteria. then harmonic balance method is used to analysize and optimize the output power and phase noise. to minimize the load pulling effect a buffer amplifier is designed to isolate the oscillator and the load

    本文在場效應管fet柵極上加上諧振網路（諧振網路是通過cst模擬得到的，它是串聯反饋迴路，介質工作在te01模，對于其後的fet ，它又相當於一個帶阻濾波器） ，然後設計輸入輸出匹配電路，使電路結構滿足起振條件，之後繼續用諧波平衡法模擬和優化，使振蕩器輸出功率合適，相位噪聲很低。
  16. In this paper, firstly, monolithic materials cosb3 and bi2te3 were prepared by sparkle plasma sintering ( sps ) respectively, and at the same time the microstructure of cosb3 and bi2te3 were studied by sem ; the seebeck coefficients and electrical conductivities of monolithic materials were measured by standard - four - probe method ( ulvac zem - 700 ) in a he atmosphere simultaneously, and their thermal conductivities were investigated by laser flash method ( tc - 7000 ) in vacuum. secondly, the junction temperature of graded bi2te3 / cosb3 thermoelectric materials was optimized based on the thermoelectric transport properties of monolithic materials, also when graded materials were used in the temperature difference ranging from 300k to 800k, the length ratio of monolithic materials cosb3 and bi2te3 were optimized in theory. thirdly, graded bi2te3 / cosb3 thermoelectric materials were prepared by two - step sps sintering, and the relationship between its average seebeck coefficients and temperature were calculated by theory mo del

    均質材料cosb _ 3和bi _ 2te _ 3的電導率和seebeck系數採用標準四端子法于he氣氛下在zem - 1上同時進行測量；熱導率採用激光微擾法（ tc - 7000 ）于真空狀態下進行測量；其次，在對均質材料cosb _ 3和bi _ 2te _ 3熱電傳輸特性研究的基礎上，對結構梯度bi _ 2te _ 3 cosb _ 3熱電材料的界面溫度進行了優化；為了使結構梯度bi _ 2te _ 3 cosb _ 3熱電材料在300k至800k的溫度范圍內具有最佳的熱電性能，本研究同時對梯度結構熱電材料當中均質材料cosb _ 3和bi _ 2te _ 3材料的長度進行了優化設計；第三，通過兩步放電等離子燒結的方法制備出了結構梯度bi _ 2te _ 3 cosb _ 3熱電材料；採用理論計算的方法研究了梯度結構熱電材料平均seebeck系數和溫度的關系；同時為了驗證設計的結果，本論文對結構梯度bi _ 2te _ 3 cosb _ 3熱電材料的開路輸出電壓和熱端溫度之間的關系及梯度材料在300k至800k的溫度范圍內使用時的功率輸出進行了相應的研究。
  17. Finally, how the pwm - fcl contributes to the system stability, three - phase load unsymmetry and the transmission capacity is discussed. and how to decide a reasonable compensation rate of the pwm - fcl is also proposed

    最後討論了pwm - fcl對系統穩定、三相負荷不平衡的作用以及它對輸電線路功率傳送能力的影響，並說明在設置其補償度時所應該考慮的問題。
  18. Characters including : fuel atomization device replaced by gas sprayer, gas supply controlled by gas flux valve ; separate fuel supply from combustion - supporting air, regulate air supply through changing the electioneering voltage to make the fully burning and improve efficiency and reduce fuel consume ; arts and crafts are simple, the modification of the oil heater ' s configuration is little and the heating power is not below the oil heater ' s level ; because of falling the voltage of electioneering, greatly descend the noise of the sample machine compared with the original

    其特點是：以燃氣噴頭替代原機燃油霧化裝置；以燃氣流量控制閥控制燃氣的供給；燃氣的供給與助燃空氣的供給相分離；通過改變主電機的電壓，調整空氣的供給量，使燃燒更加充分完全，並進一步提高了熱效率，降低了燃料消耗；工藝簡單，對原機型改動較小；樣機的加熱功率不小於原機型水平；此外，由於主電機電壓的降低，使樣機的整機噪聲比原機大大下降。
  19. Abstract : this paper analyses principles for power frequency inductive furnace and power factor parallel compensation and three phases balance, deals with processes of power factor compensation and three phases balance for plc automatic power inductive furnace. for saving source and shortening time of smelting and improving electrice net, they will be of great significance

    文摘:分析了工頻感應爐的工作原理、功率因數並聯補償原理和三相平衡原理.論述了plc自動控制工頻爐的功率因數補償、三相平衡的過程.它對節省能源，縮短熔煉時間，改善電網功率因數有重要意義
  20. Based on the summary of the fruits of the research of the active power factor correction, the pfc system, which adopts cuk power converter circuit and average current mode control scheme, is well studied in this thesis

    本文在總結有關有源功率因數校正研究成果的基礎上，針對目前研究的熱點及其發展方向，對單相有源功率因數校正技術作了較為深入的探討，並提出了將升壓型平均電流控制的功率因數校正思想用於cuk型電路拓撲。
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