磁偏角 的英文怎麼說

中文拼音 [cípiānjiǎo]
磁偏角 英文
[地球物理] magnetic declination; declination of a magnetic needle; inclination; declination of a compass; declination; angle of declination
  • 磁 : 名詞1. [物理學] （磁性; 能吸引鐵、鎳等的性質） magnetism 2. （瓷） porcelain; china
  • 偏 : Ⅰ形容詞1 （不正; 歪斜） inclined to one side; slanting; leaning 2 （只側重一面） partial; prejudi...
  • 角 : 角Ⅰ名詞1 （牛、羊、 鹿等頭上長出的堅硬的東西） horn 2 （古時軍中吹的樂器） bugle; horn 3 （形狀像...
  1. The principle of computing map magnetic declinations

    圖幅磁偏角自動計算的原理和方法
  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 new model was presented in a three dimensional geographic coodinate system to describe the linear growth of r - t instability so that the effects of magnetic inclination and declination were taken into accont. it is an generalization of former theories from equatorial to mid - latitude regions. from this model one can see the influence of magnetic strength, inclination and declination. due to the magnetic effects, the occurrence rate of the instability is not symmetric in longitudes even at the magnetic equator. some occurrence peaks or valleys will appear in certain places around the world

    從三維地理坐標系出發建立模型，考慮了地磁傾角和偏角的影響，研究spread - f現象的全球分佈特點，是對以前的研究從赤道地區向中低緯度地區的推廣。從該三維模型中可以看到地磁場的大小和位型的影響包括磁傾角和磁偏角的效應。由於地磁位型的不同，發生率的分佈並不具有經度對稱性，即使在磁赤道附近也如此。
  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. Permanent magnetism of the rotor synchronous electrical cigang permanent magnetism is multipolar, stator are two pairs of feet are still 90 degrees electricity perspective, a very similar jacket one coil

    永磁同步電機的轉子是多極的永磁磁鋼，定子是兩對爪極偏90度電角度，爪極外套一線圈。
  6. The electrode angle should be adjusted to a position that tends to overcome arc blow

    焊絲的角度應調整至克服磁偏吹的方向
  7. The result of statistics show the ratio of strong activity samples in m type ms stars is larger than that in other g, k type ms stars, the relation of between angle momentum and magnetic momentum of m type stars also depart from the whole relation of ms stars

    主序星的角動量與以冕球活動指數為指標的磁動量間的相關性分析表明m型主序星的角動量與磁動量間的關系偏離了其它類型的主序星的總體線性關系。
  8. The power angle characteristics are acquired and compared with the unsaturated curves. it is concluded that the stability limit of the power angle is less than 90 degree. reactive power regulating curves are calculated and compared with those curves when saturation effect is not considered, the result is that u type curves are deviated to the right

    通過對同步發電機各種運行曲線的計算，在已有文獻的基礎上更進一步分析了鐵磁材料飽和以及磁場畸變對同步發電機運行特性和參數的影響；求出了空載特性曲線和零功率負載特性曲線，在不同的電樞電流下計算得到的波梯電抗不同；求出了功角特性曲線，與不計飽和時的功角特性曲線相比較，功角穩定極限小於90 ；求出無功調節曲線，與不計飽和時相比較， u型曲線向右偏移。
  9. The main achievements are as follows : the theory models of defect mfl field are set up ; based on the magnetic dipole model and finite element model, the distribution of defect mfl field is simulated in the dissertation ; the component of flux density ( magnetic filed ) parallel to the surface of pipe is detected by a circumferential array of hall probes ; the factors including defect geometry parameters, defect surface angle and shape, pipe material, field intensity, vehicle velocity, background magnetization, operating pressure and remanent magnetization and so on influence the mfl signal characteristics

    採用霍爾元件作為缺陷漏磁檢測傳感器，獲得管道軸截面漏磁場切向分量的漏磁信號；研究了缺陷外形尺寸、缺陷傾角和形狀、管道材質和磁化強度、檢測儀移動速度、管道背底磁場、管內壓力和剩磁對漏磁信號的影響。提出了各通道增益放大、各路漏磁信號偏離調整、波形微分、數字濾波和平滑等漏磁信號預處理方法；分析了等空間采樣的漏磁信號轉換為等時間采樣信號的必要性，研究了漏磁信號的小波去噪方法。
  10. The study indicates that the gimbaling magnetic suspension flywheel presented in this paper has original structure, its rotation axis can be leant in large range of angle, satisfied the demand of the design object

    通過研究表明，本文設計的新型轉軸可偏置磁懸浮飛輪方案結構新穎，通過一個軸承就可以實現轉軸在大角度范圍內的偏轉，結構簡單且合理可行，滿足了設計要求。
  11. So the research on these new materials is becoming more and more important. we collected and analyzed the overseas and domestic sufficient date for the optical characteristics of magneto - optic crystal. then we bring forward a research topic in varying magnetic field on some crystals optical characteristics such as the angle of rotation, the depolarization ratio and so on

    本文在對國內外有關磁光晶體光學特性研究狀況進行調研之後，從外界磁場對晶體光學特性的影響這一角度出發，在大范圍可調諧磁場下，對幾種不同的磁光晶體的光學特性，諸如faraday旋轉角、退偏度等進行了測定。
  12. The method to correct the declination error of uav geomagnetic heading with gps and igrf is proposed, by means of which the true heading of the craft can be obtained with magnetic sensor in global scope

    提出了基於gps （ globalpositionsystem ）和igrf （ internationalgeomagneticreferencefield ）的無人機磁航向地磁偏角修正方案，使無人機能夠在全球范圍內利用磁傳感器獲得子午線航向。
  13. Through the analysis of the attitude dynamic equation, the potential energy function is derived. the relationships of attitude varieties are derived from energy function and angle momentum equation and thus the attitude control laws of bias momentum satellite are put forward

    通過對衛星姿態動力學方程分析，得出衛星的勢函數，結合衛星的勢函數和角動量方程導出各姿態之間變化關系，提出利用地磁場實現偏置動量輪衛星姿態穩定的控制規律。
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