direct excitation 中文意思是什麼

direct excitation 解釋
直接刺激
  • direct : adj 1 筆直的，一直線的；正面的。2 直接的。3 直截了當的，直率的，明白的。4 直系的，正統的。5 【語...
  • excitation : n. 1. 刺激，興奮，激發，鼓舞。2. 【物理學】激發；【電學】激勵、勵磁。3. 【植物；植物學】激感（現象）。
  1. Also we manufacture various of series excitation, direct current, induction and consequent pole motor

    適用於手機數碼相機計算機家電等產品上的標識片。
  2. The modulating signals of firing delay angle at the rectifier and firing lead angle at the inverter, and the excitation voltage are chosen to be control variables. the offset of the current of dc line and the extinction angle and the power angle of generator are chosen to be control outputs. then a nonlinear controller is designed for the system under study according to direct feedback linearization theory

    以整流側觸發延遲角的調節信號、逆變側觸發超前角的調節信號以及發電機勵磁電壓作為控制變量，以直流線路電流、逆變側關斷角以及發電機功角的偏移量作為目標輸出，用直接反饋線性化方法設計了系統的非線性控制器。
  3. A more direct observation the intercalation interaction by addition the eu3 + - rutin complex into dna under the optimal conditions ( 0. 1m acetate buffers. ph = 5. 69 ) using fluorimetric method was presented. according to the spectral excitation and emission spectrum of dna and guanine

    這項研究對蘆丁及蘆丁稀土配合物這些廣譜抗菌、抗病毒藥物的生理活性的定性分析和定量分析提供了一個非常直觀有力的方法和手段，一具有良好的應用前景。
  4. 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，通過比較闡明了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，使之適應于電力系統這個強非線性對象。通過參考大量的書籍文獻推導出一套實用的可將大型汽輪發電機勵磁與汽門綜合起來進行控制的模型方程，此模型方程涵蓋了電力系統中特別引人注目的幾個量- -轉子角、轉子轉速、發電機q軸電勢eq 、暫態電勢e ' q 、有功功率pe 、機械功率pm 、汽門開度、機端電壓vt ，在此基礎上建立了實用的電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電機的非線性綜合控制器及機端電壓最優控制器，通過模擬實驗與採用常規的按電壓偏差進行調節的比例式勵磁控制器+汽門比例控制及採用常規的按電壓偏差進行調節的比例式勵磁調節器和基於二次型性能指標設計的最優快控汽門（考慮發電機的飽和因素）進行了對比，證實了採用此種控制器可以有效地提高電力系統的暫態穩定性，並且在電力系統遭受小干擾時同樣具有良好的調節性能。
  5. So these circuits can be simplified. due to the power output of the electromagnetism vortex water heater has direct relation to the interval between the vortex board and the excitation loop plane

    由於熱水器的熱功率輸出跟渦流加熱扳與勵磁線圈平面之間的距離有直接的關系，距離越小則輸出功率越大。
  6. But up to now, there is no direct experimental measurement result about the reduced transition probability of the first excitation state of 64cu and only one experiment which had measured the lifetime of low - lying excitation state of 64cu

    但直到現在，有關『 ll第一激發態ba ）值無直接的實驗測量結果，僅有一個實驗測量了刷cll第一激發態的能級壽命，該實驗通過『 i … ， ny ）反應布居『 u的激發態，通過脈沖質子束流（脈沖寬度0
  7. Since the carrier mobility in organic materials is very low, no collision excitation is possible. the short wavelength peak is due to direct bombardment by electrons from sic > 2. we name this luminescence as cathodoluminescence - like ( cl - like ) emission or solid state cathode luminescence because the energized electrons are accelerated in solid instead of in vacuum

    這樣在有機層中的電子數是nl n計n汁n ，空穴數是p n （ n是類陰極射線激發出的電子，也是類陰極射線激發出的空穴兒這兩類載流子的復合將比單純有機發光的復合nip增加了（ n計n葉n ）叮（ l n計n葉n ） n 。
  8. The most direct and reliable method to determine the b ( e2 ) value of excitation state of nuclei is to using the method of low - energy coulomb excitation experiment

    而測量原子核激發態bo ）值是最直接、最可靠的方法就是通過低能庫侖激發實驗，幾乎所有穩定核素低能激發態bo ）值都使用庫侖激發辦法測量過。
  9. It was reported in this paper that in the aes analysis of aluminum alloy ingots by the photoelectric direct reading spectrometer, segregation of alloying elements, especially silicon in the alloy was observed, leading to deviation of analytical results obtained from different site of excitation

    摘要在用光電直讀光譜儀分析銘合金時，在不同激發點所取得的合金元素的測定結果，特別是硅的剛定值，之間存在明顯偏差，並證實系由合金的偏析所引起。
  10. The excitation may be obtained by different ways and relaxation of their excited states leads to luminescence. eftl is a phenomenon of direct transformation of electrical energy into optical energy

    通過不同方式，它可使材料達到激發態，然後弛豫發光，是一種從電能直接轉化成光能的現象。
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