excitation efficiency 中文意思是什麼

excitation efficiency 解釋
激發效率
  • 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）。
  • efficiency : n. 1. 功效。2. 效率；效能；實力，能力。3. 【物理學】性能。
  1. On one hand, it may exert damping on the armature of torque motor and overcome self - excitation of jet pipe. one the other hand, it may enlarge magnetic permeability of working clearances and improve magnetic circuit efficiency of torque motor to boost dynamic response speed of servo valve

    一方面可增大力矩馬達工作氣隙部分產生的阻尼，從而可以抑制射流管的自激，另一方面又可增大工作氣隙的導磁率，改善力矩馬達部分的磁路效率，從而提高伺服閥的動態響應速度。
  2. 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。
  3. The method using square wave excitation presented by the paper is verified by theories and experiments that the method meets the requirement of accuracy, and this method ' s application simplifies manipulations and improve greatly the calibration efficiency

    其中本文提出的方波信號激勵的比較校準法，理論和實驗證明不僅滿足校準精度要求，而且簡化操作，大大提高了校準的效率。
  4. By the study of the whole decay curves of 10 hours, the influence of each step is summarized, and the best stoichiometry and preparation techniques are acquired. the crystal structure of sral2o4 eu2 +, dy3 + is monoclinic system, which is a high efficiency luminescence crystal structure. the emission spectrum and the excitation spectrum of sral2o4 eu2 +, dy3 + powder are measured

    此外，通過x射線衍射譜確定了所制備的sral _ 2o _ 4 ： eu ， dy長余輝材料晶體為單斜晶系結構，並測量其發射光譜，激發光譜，初步討論了sral _ 2o _ 4 ： eu ， dy長余輝蓄能材料可能的發光機理。
  5. Furthermore, the excitation spectrum for 730nm fluorescence shows that the 685nm light has high excitation efficiency

    葉綠體730nm熒光成份的激發光譜實驗結果表明： 685nm光對730nm熒光有較高的激發效率。
  6. The pseudo excitation method ( pem ) has brocken its efficiency - bottleneck, and appears to be quite effective in coping with such multiple excitation random analyses. therefore introducing the random vibration approach into the bridge engineering as a tool of seismic designs not only meets the objective requirement and the modem technological development, a good methodology background is also available

    虛擬激勵演算法突破了計算效率瓶頸，並且易於處理多點激勵問題。因此，將隨機振動法作為一種新的橋梁抗震設計方法引入我國橋梁工程界不僅符合客觀需求，體現了設計水平的現代發展趨勢；而且在方法論上也有了比較有利的條件。
  7. In non - selfsustained discharge the excitation and ionization processes can be controlled separately, which is useful to optimize the e / p value of the discharge. the ballast resistance can be leaved out and the maximal electro - optical efficiency reaches 19 %

    非自持放電使激光器的激發和電離過程分開，有利於使二者分別處于各自的最佳e p值附近，放電的正阻抗特性使放電電路可以省去限流電阻，極大地提高激光器的實際效率。
  8. The performance of the probe has an important effect on the performance of the biosensor. therefore, it is critical for advancing the detection sensitivity of the biosensor to design and optimize the structure of the probe to improve the excitation and collection efficiency

    光纖探針的性能對光纖生物傳感器的整體性能有著極為重要的影響，如何設計並優化光纖探針結構以提高熒光信號的激發和收集效率，將成為提高光纖倏逝波生物傳感器探測靈敏度的關鍵。
  9. The hybrid claw - pole alternators have magnetic fields contributed by permanent magnet as well as excitation coil, and the advantages are high efficiency, have good low - speed characteristics, excitation adjustable and high flux densities. for the reason of complex claw - pole construction and 3 - d magnetic field distributions, there is lack of the research on the alternators

    混合勵磁爪極發電機是由永磁體和勵磁線圈共同產生電機磁場的一種發電機，與傳統的爪極發電機相比有高效、低速性能好和集線圈勵磁的電壓調節性能與高磁通密度的優點，具有很好的研究前景和使用價值。
  10. But the problems in the control system of excitation device such as its robustness, fast response and efficiency are still not well resolved

    然而勵磁系統控制中的魯棒性、快速性和有效性問題卻一直未曾得到很好的解決。
  11. Excitation at 493nm, the emission peaks of pff5 in chloroform solution is 540nm and 580nm. using pff5 as the emitter, an efficiency single layer led has been fabricated. 3

    利用pff5作為發射層，研製單層高效的聚合物發光二極體，研究器件的伏安特性、電壓亮度特性和電致發光光譜。
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