電量比較器 的英文怎麼說

中文拼音 [diànliángjiào]
電量比較器 英文
electric comparator
  • : 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...
  • : 量動1. (度量) measure 2. (估量) estimate; size up
  • : Ⅰ動詞1 (比較; 較量高下、 長短、距離、好壞等) compare; compete; contrast; match; emulate 2 (比...
  • : Ⅰ動詞1 (比較) compare 2 [書面語] (計較) dispute Ⅱ副詞(比較) comparatively; relatively; fair...
  • : 名詞1. (器具) implement; utensil; ware 2. (器官) organ 3. (度量; 才能) capacity; talent 4. (姓氏) a surname
  • 電量 : [電學] (物體所帶電荷的多少) quantity of electricity quantity of electric charge電量表 voltamete...
  • 比較 : 1 (對比) compare; compare with; contrast; parallel (with); comparison; by comparison; in comp...
  1. When measuring the magneto performance parameter , we find that the instrument which use to measure voltage and current is still the simple voltmeter and amperemeter in the national standard , and the form of wave that we observed is anomaly. based on the measure principles, it obviously ca n ' t be used to do quantitative analysis ; because the discharge process of ignition system is quite complex, accompanies with very strong electromagnetism interference, and the ignition current and voltage are variable , it make the measure of ignition energy become a difficult thing of ignition system performance detection

    在磁機常規測時,發現在國家標準中用於測壓、流的儀仍然是普通的壓、流表,而觀測到的波形多為不規則的形狀,根據測原理,顯然不能用其來做定的分析;由於點火系統的放過程復雜,伴隨著很強的磁干擾,點火流、點火壓都是變,使得點火能的測成為點火系統性能測試的一個難點。
  2. Engine parameter acquisition display system is an important member of helicopter seat room display system, and is made of engine parameter acquisition unit ( epu ) and engine parameter display ( epd ). epu is joined with engine electronic controller, fuel manage system, engine and accumulator by the wire. it acquire the parameter of engine, for example, analog signals, frequency signals and discrete signals, etc. then data processing, compare data and operation is executed

    發動機參數採集通過硬連線與發動機子控制、燃油管理系統、發動機及蓄池相連,採集模擬、頻率及離散信號等參數,並對採集的數據進行運算、與處理,最後通過標準rs ? 422a串口和發動機參數顯示及其它設備進行通訊。
  3. Procreant knowledge expression and forward inference engine are adopted in the method of fault diagnosis based on expert system theory. in the fault diagnosis applying neural network theory, six kinds of improved arithmetic of back - propagation arithmetic, including gradient descent with momentum, variable learning rate back - propagation, resilient back - propagation, quasi - newton, levenberg - marquardt and conjugate gradient, are applied to diagnose the faults of electric load manage center and solid state power controller. different diagnostic results gotten by simulation are compared at last

    在基於專家系統的故障診斷方法中,採用了產生式知識表達和正向推理機制;在基於神經網路的故障診斷方法中,則分別採用了bp神經網路的附加動法、自適應學習速率、彈性bp演算法、擬牛頓法、共軛梯度法和levenberg - marquardt法對氣負載管理中心和固態功率控制的故障進行診斷,並對由模擬得到的不同診斷結果進行
  4. Based on refering to a great quantity of domestic and international data, this dissertation puts forward the standpoint that giving systematical diagnosis to mechanical and electrical equipment with the double turnplate strike crusher as example. by means of calculating critical rotation speed of inner turnplate, theory foundation is offered to the crusher ' s improvement. based on actual situation of the crusher, a portable observation and diagnosis system has also been developed on the basis of virtual instruments

    本文在查閱大國內外文獻的基礎上,以雙轉盤沖擊破碎機為實例,提出了機設備系統診斷的技術思路;通過計算內轉盤臨界轉速,為破碎機的改進提供了理論依據和方法;結合破碎機的實際使用情況,開發了性價高的、基於虛擬儀技術的破碎機監測系統。
  5. First, how to conduct sample and quantification of continuous time signal which is prior condition of sdr is explored in detail, and the comparison and analysis of some sample modes are given in which band pass signal sampling theorem is most important. second, multi - sample rate signal processing which is an important basis of sdr is studied. emphasis are put on decimation and interpolation those are the most fundamental process and the realization of decimation and interpolation filter

    在基於中頻采樣的軟體無線結構框架下,首先詳細探討了軟體無線的前提條件,即如何對連續時間信號進行采樣化,分析了幾種采樣的方式,其中最為重要的是帶通信號采樣定理;然後探討了軟體無線的一個重要基礎,即多采樣率信號處理,重點討論其最基本的兩個過程抽取和內插以及抽取和內插的實現;接著介紹了結構簡單、適用於一級抽取的cic濾波和適用於做2倍抽取的半帶濾波;再次論文在總結了傳統的調制解調基礎上,結合軟體無線件的特點,系統的探討並實現了基於正交思想的am 、 fm 、 ask 、 fsk 、 bpsk 、 qpsk的正交調制解調演算法。
  6. In this research project we designed some special modules such as synchro / resolver signal transmit & receive card 、 discrete signal output comparison card 、 adi and his adapter cards ect

    本課題自行設計製作了同步信號發送/接收卡、離散輸出板、 adi和his適配卡等專用功能路板。
  7. The safety of transmission line plays a important role in power system safety it is not only the requirement of ensure supply power reliability, but also the necessary precondition of enhance power system stabilization, to remove faulty line quickly and accurately, also keep non - faulty line continuous work when some transmission line faults current differential protection is a kind of simple, reliable and good - selective protection manner to any variety of transmission lines, power system development needs current differential protection apply to transmission lines, moreover the advancement of electric and communication technology enable current differential protection apply to transmission lines firstly, the paper discusses, analyses the research and application transmission line protection in detail, compare the principle and realistic presupposition of general line pilot protections secondly, because conventional current vector differential protection are influenced easily by load current and transitional resistance, in order to at the same time quicken protection act, the principle and criterion include work characteristic of differential protect based on fault component sampled values are studied, results shows that differential protect based on fault component sampled values excels general vector current differential protection in reliability, sensitivity and anti - saturation of current transformer in addition, synchronous current sampling methods at all terminals of line is analyzed and estimated lastly, the principle and criterion. also device design about current sampling values differential protection based on optical fiber communication, which apply to short transmission lines are concretely investigated,

    基於基爾霍夫定律的流差動保護無論對於何種形式的輸線路都是一種簡單、可靠、選擇性強的保護形式,力系統的發展使得流差動保護應用於線路保護成為需要,而子、通信技術的發展使得流差動保護應用於輸線路成為可能。首先,本文對目前線路保護的研究和實際應用情況進行了討論和分析,了常用線路縱聯保護的實現原理和實現條件及優缺點。其次,針對常規相流差動保護易受正常負荷流和故障過渡阻影響的缺點,同時為加快差動保護的動作速度,對基於故障分瞬時采樣值流差動保護的原理、判據、動作特性等作了討論和分析,結果表明基於故障分瞬時采樣值流差動保護在可靠性、靈敏度、抗流互感飽和方面明顯優于常規相流差動保護,對流差動保護各端的同步采樣方法和數據通信也進行了分析和評價。
  8. There are many methods for measuring impedance and commercial lcr meters may have very different working principles. it is more advisable that customers submit their impedance standards for calibration, which in turn can be used to perform in - house checking of their lcr meters. however, the laboratory may offer performance checks for lcr meters using impedance standards

    阻抗的方法有多種,故此市面上的阻計或有截然不同的操作原理,一種適當的做法是客戶將其阻抗標準送來本所校正,然後客戶可利用這些已校正的標準替自己的阻計進行測試。
  9. The study has completed the design of two - phase inverter and made up of the two - phase inverter - motor system for experimental use it is a variable frequency adjustable speed system with a open - loop control of rotational speed, which consists of voltage - controlled oscillator circulating assign device inverter circuit and two - phase induction motor a accurate mathematical model is set based on the whole system, and simulator program of dynamic and steady condition is established, which is used to calculate the dynamic and steady performance by kron and symmetrical coordinate converter by simulator calculation and experimental research with specific parameter of the system, a comparison is made between predicted and experimental characteristics, experimental measurements are shown to compare closely with corresponding theoretical result it is compared with some variable frequency adjus table speed system comprising inverter and single - phase induction motor from the system efficiency torque pulsation and the effect of two - phase inverter capacitance based on the conclusion, harmonic cancellation pulse width modulation control of a two - phase inverter - fed induction - motor drive system is researched, which cancelled the low harmonic and improve the system performance

    通過對機的kron變換和對稱分變換,建立了系統精確的數學模型,編制了系統動態及穩態運行的模擬計算程序分別計算系統的動態和穩態性能。通過對系統的具體參數進行了模擬運算和實驗研究,實驗和模擬結果進行,說明實驗和理論為一致,並從系統效率、轉矩脈動及兩相逆變容的影響等方面與各種逆變和單相異步動機組成的變頻調速系統加以。在此基礎上,對兩相逆變-異步動機系統使用諧波抑制pwm控制進行了研究,由於減少了低次諧波,改善了系統性能。
  10. Comparing and analyzing the synchronous control strategy, which brings up the new method to control the double un - symmetry jars proceed synchronously with the combination of proportional valve and servo valve, which forms closed loop control ; basing on the above methods, models are made to get mathematics models of position control system and to analyze system model theoretically by using pid controller, we can realize regulating parameters, minimizing synchronous errors and enhancing the dynamic performances ; the simulink tool box in matlab software is used to imitate the system according to the model, which not only makes the result visual and easy to adjust the parameters in interactive way but also lets us understand the effects of different parameters and optimizes the dynamic properties. the theory of plc control in dshp is discussed after advanced understanding of the system movements. hardware design and general regulation are given on the base of siemens company products s7 - 200 plc

    本文根據大的國內外文獻,對研配液壓機的工作原理及設計結構進行了簡介;對位置同步的控制方法進行了分析,提出例閥和伺服閥復合控制的閉環結構來對非對稱雙缸進行同步控制例同步控制方案;在此基礎上著重對例閥控非對稱缸建模,最後得到位置控制系統的總體數學模型,從理論上對同步系統動態特性進行了分析,並用pid控制進行參數整定,減小雙缸同步誤差、提高系統的動態響應性能;其中控制性能的分析藉助于matlab軟體中的simulink工具箱,由已建立的數學模型形成模擬模型,得到可視化的模擬結果,從而利於交互方式下調整參數,了解不同的參數對系統的影響,優化同步系統的動態性能;在深入了解系統的動作特性后,對plc控制研配液壓機的原理進行了探討,針對siemens公司s7 ? 200型plc給出了硬體設計的總體規劃,編制出研配液壓機動作控製程序,在編程中著重研究位移傳感與plc的通訊、雙缸同步運行的pid控制在plc上的實現及bcd碼撥盤輸入程序的植入問題。
  11. In this thesis we have analyzed some kinds of single photon detector and their advantage and disadvantage firstly. then, the key apparatus ( ingaas - apd ) and its characteristics have been studied. we have tested the apds of perkinelmer, oki and photon company, and got some useful parameters

    其次,主要對子通信用單光子探測的核心件? ? ingaas雪崩光二極體( ingaas - apd )的暗流特性、光流、溫度特性、雪崩特性等進行了研究,同時把飛通公司、 oki公司、 perkinelmer公司的apd進行了,分別得出了它們的特性參數,為研製實用的紅外單光子探測提供了重要的依據。
  12. The stability of electric power system has been being focused for a long time toprevent a power system from losing synchronism after sudden fault , researchers have done much work and got many accomplishments this paper applied the direct feedback linearization ( dfl ) technique on the power system , a strong nonlinear system simulation results by matlab proved this method efficiency main works and results are as follows : this paper compared some existing methods in excitation control , fast valve control and coordinated control respectively, analyzed the developments and actuality of nonlinear control research in brief, illustrated why ransient stability could be greatly improved by using the fast valve control in chapter 3 , indicated the importance of coordinated control farther this paper introduced the inverse system theory, based on which , discussed the dfl theory, pointed out which had consistency with the inverse theory, expanded the dfl theory combined the idiographic model equations , made which adapt to the model of a single machine - infinite bus power system this paper referenced abundance articles and educed a set of equations , which could describe the dynamical process of excitation and fast valve control for synchronous generators in the equations , there were several very important parameters of power system - - rotor angle ( ) , rotor speed ( ) , generator q axis voltage ( eq ) , transient voltage ( e ' q ) , active power ( pe ) , mechanical input power ( pm ) , valve opening ( ) , generator terminal voltage ( vt ) , based on the model , nonlinear coordinated controller and terminal voltage optimal controller have been designed by using the expanded dfl theory and lq optimal control theory the simulation results showed that the controller could keep power system transiently stable under the effects of a symmetrical 3 - phase short circuit fault , which achieved better postfault regulation compared with another two routine methods , one is the proportion excitation controller and proportion fast valve controller, the other is the proportion excitation controller and the optimal fast valve controller, which could exert good performance when met 1ittle disturbance either

    在介紹逆系統理論的基礎上,詳細介紹了dfl理論,通過闡明了dfl理論其本質是逆系統方法的一類,並結合具體課題推導出的模型方程將dfl理論進行了擴展,使之適應于力系統這個強非線性對象。通過參考大的書籍文獻推導出一套實用的可將大型汽輪發機勵磁與汽門綜合起來進行控制的模型方程,此模型方程涵蓋了力系統中特別引人注目的幾個- -轉子角、轉子轉速、發機q軸勢eq 、暫態勢e ' q 、有功功率pe 、機械功率pm 、汽門開度、機端壓vt ,在此基礎上建立了實用的力系統簡化的數學模型,並將擴展的dfl理論應用於此模型系統,結合線性二次型最優控制理論設計出大型汽輪發機的非線性綜合控制及機端壓最優控制,通過模擬實驗與採用常規的按壓偏差進行調節的例式勵磁控制+汽門例控制及採用常規的按壓偏差進行調節的例式勵磁調節和基於二次型性能指標設計的最優快控汽門(考慮發機的飽和因素)進行了對,證實了採用此種控制可以有效地提高力系統的暫態穩定性,並且在力系統遭受小干擾時同樣具有良好的調節性能。
  13. It " s function is to receive laser signal and to sent out the electric signal ; the second is the monolithic processor system. this part function is to pick up the electric signal sent by ccd detector and to compute the digital signal to get the data where the laser beamed, then sent the data to pc computer ; the third part is the control interface for people to control whole measurement process

    本文介紹的桁架梁撓度實時檢測的荷耦合( ccd )測系統由ccd接收系統,單片機測系統和pc機測軟體三部分組成。該系統採用線陣ccd為傳感,以8031為控制核心,在單片機系統和pc機軟體之間建立了可靠的通信,能在惡劣的條件下獲取、顯示、存儲、處理和桁架的撓度值。
  14. The calibration of piezoelectric accelerometer is an important area of the shock and vibration measurement technology, and the calibrated piezoelectric accelerometer is divided into standard accelerometer and working accelerometer, usually standard accelerometer is calibrated by absolute method and working accelerometer is calibrated by comparison method

    加速度傳感的校準是振動與沖擊測技術中的一個重要研究領域,被校的壓加速度傳感有標準加速度計和工作用加速度計之分,通常標準加速度計用絕對法校準,工作用加速度計用法校準。
  15. Abstract : performance evaluation on five kinds of dust collectors installed in the 2nd phase progress project of pangang, its efficiency and the comparison of measured parameters of air quantity with design parameters were taken in paper. the results showed that the electric dust collectors, water dust scrubbers, large bag dust extractions and cyclone dust collectors performed satisfactorly, small bag dust extractions took the bad with the good, and foam dust collectors went badly

    文摘:通過對攀鋼(集團)公司二期工程上馬的5種類型除塵性能進行監測評價,重點對除塵除塵效率和處理風的實測值與設計值相,調查監測結果表明:除塵、水膜除塵、大型布袋除塵和旋風多管除塵性能良好;小型布袋除塵運行情況良莠不齊,泡沫除塵運行情況差。
  16. The new device consists of paint - drying box, heat carrier boiler, heating pipe, expansion tank, gas separator and oil tank, etc. the data of two applied examples shows that heat carrier paint drying method is able to make painting - drying cost drop by 88 %, compared with the conventional one, that it has some advantages such as uniform temperature field, good appearance and lower costs, compared with conventional hot air convection mode

    該裝置主要由熱載體烤漆爐、輻射加熱管,熱載體爐、膨脹、油氣分離和儲油槽等組成。應用實例的測試數據表明,與傳統的遠紅外加熱鋼瓶烤漆方式相,鋼瓶熱載體烤漆節能和降低能耗費用十分顯著,能耗費用降幅達到88 。與熱風爐對流烤漆方式相,熱載體烤漆方法不僅節能,而且烤漆爐溫度場均勻穩定,同時烤漆的外觀質也得到了明顯提高。
  17. Applying relative arithmetic to all kinds of faults and calculating off - line, we can master time - distance relation chart for all kinds of faults. computation indicates : when transmission lines occur faults, the data window of protection algorithm consisting of prefault and postfault data at the same time has important significance. the following methods are useful to achieve the inverse time characteristic : calculating impedance by using flourier in a full cycle, calculating work voltage by using fault component, calculating the torque created by a phase comparator or a magnitude comparator

    實際的計算表明:輸線路發生故障后,用故障前後的數據同時充滿保護演算法的數據窗,對于快速切除近區故障具有很重要的意義;同時利用故障前後的數據,下述方法可以好地實現距離保護的反時限特性:直接用全周傅里葉演算法進行阻抗計算;採用工頻變化阻抗繼進行工作壓的計算;採用轉矩的思想進行轉矩的計算。
  18. Abstract : the rechargeble batteries are used for backup power internal electrically equipments and instruments. but batteries lifetime usually is shorten by overwork and then malfunctions of equipment are induced. to avoid the complexion described above, the protection circuit against overwork is designed. it is based upon the voltage comparator and regulator. it will light up a red led when the volume of the batteries discharged close upon 50 % ; it will switch off the load automatically when it discharged closing to 80 % of their energy capacity, thus overwork of batteries can be avoided and lifetime may be extended

    文摘:用蓄池做后備源的系統(或設備) ,常因過放導致池提前報廢而造成設備故障.根據壓隨容變化的規律,利用壓基準源設計製作了池放保護路,當池放接近容的50 %時,啟動預警信號;當池放達到容的80 %時,路自動切斷負載,防止池過度放,延長池壽命,保證系統(或設備)在供恢復正常后能正常運行
  19. Advanced fpga technology is introduced to improve the integration of digital circuits, and all digital circuits in the original module are integrated in the fpga chips, which could not only reduce the cost, but also improve the reliability and measurement precision of the circuits. high speed digital signal processor ( dsp ) is selected as the coprocessor instead of scm ; it can receive all kinds of commands sent from vxi, analyze and execute the commands, harmonize each section of the module and process the data. higher - conversion - speed comparator chip is adopted to convert the input signals being measured into square waveform signals which could be identified by fpga chip ; it can expand the measurement range of frequency dramatically

    本文在原有vxi總線四通道計數模塊的設計基礎上,通過對原模塊缺陷的分析,採用一些新的技術和新的件來重新設計該計數模塊:採用最新的fpga技術來提高數字路的集成度,將原模塊中的所有數字路全部集成在fpga晶元中,這樣不僅能節約成本,還能提高路的可靠性和測精度;採用高速的數字信號處理( dsp )取代原有的單片機作為協處理,來接收vxi發來的各種命令,分析命令、執行命令、協調模塊各部分的工作以及對數據的處理;採用轉換速率更高的晶元將輸入的被測信號轉換為fpga晶元能夠識別的方波信號,能極大提高測頻率的范圍;採用d / a轉換晶元和隔離運算放大得到隔離通道所需的平,該平值能夠根據實際需求進行設置,能增強模塊的使用靈活性。
  20. Specification for harmonized system of quality assessment for electronic components - blank detail specification : integrated voltage comparators

    子元件質評估協調體系規范.空白詳細規范:集成
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