磁偏差 的英文怎麼說
中文拼音 [cípiānchā]
磁偏差
英文
magnetic aberration-
And that the bias - magnetic is direct ratio with relative v - s difference, and is inverse ratio with circuit resistance
得出偏磁大小與相對伏秒差成正比，與迴路電阻成反比。Aberration of electronic lens made by electron gun and aberration of magnetic deflection system made by dy are comprehensively investigated, so is the shadow mask ' s effect on electron beam landing screen error. the conclusion can be get that, because the distribution of electron beam landing screen ( distribution of luminance ) is affected by many kinds of factors, it cannot get the correct function by calculation, and should be get by measurement instead
全面分析了cpt電子槍發射系統形成的電子透鏡像差與磁偏轉系統形成的偏轉像差；分析了蔭罩的自身厚度與位移對電子束著屏的影響，並由此得出結論，著屏電子束分佈（即亮度分佈）受著許多因素的影響，理論分析是半定量的，著屏電子束分佈需要用精確的測量儀器來測量。The loss will be decreased by using single - mode fiber or poledzation holding fiber in recent work we measured the verdet constant of the samples and tested the chederistic of magnetic - optical glass bare fibel then, we analyzc the resource of ermrs, which are coupling effect, stability of the light source, polarizers, defects of the magnetic - optical glass flber and coupling effects between different modes
採用單模光纖或偏振保持光纖將降低損耗。論文測試了樣品的費爾德常數，研究了磁光玻璃裸光纖的偏振特性。分析了誤差的主要來源：耦合效果、光源的穩定性、偏振片對光路的影響、裸光纖自身缺點和模式耦合的影響。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。The accurate calculation of the input voltage and the compensation for the dc - offset error and the variation of the stator resistance are important factors in practical implementation of the integration since they can cause a drift in the stator flux linkage trajectory and furthermore deteriorate the quality of torque control
因此，輸入電壓的準確計算、直流漂移量的補償以及定子電阻變化的補償都是影響積分計算準確性的重要因素，這些誤差會導致定子磁鏈軌跡的偏移，進而降低系統轉矩控制的性能。In order to improve the quality of the voltage signals, this paper has adopted the scheme of three phases and six organs in signal - generator part, which can eliminate the errors caused by the assembly warp and the zero shift of organs. this paper also has analyzed the distribution and varying rules of the magnetic field in the signal - generator part, then based on the conclusion of the analysis improved the structure of signal - generator, which could completely eliminate the noise signal caused by the roughness of the face on the magnetic steel ring. the improvement not only met the requirement of this study, but established the theory foundation for the super - high precision magnetic encoder in future research
因此，為提高原始電壓信號的質量，本文採用三相六元件的信號發生方案，通過差分處理濾除了由於裝配偏差和零點漂移帶來的信號誤差;本文對編碼器信號發生結構進行了磁場分析，依據磁場分析的結論對編碼器常用的信號發生結構進行了改進，改進后的結構利用積分原理在理論上能夠完全消除信號中由磁鋼環表面粗糙度引起的信號噪聲，進一步提高了信號質量，此結構不僅滿足了本課題的需要，而且為今後研製超高精度的磁電式編碼器奠定了理論基礎。To the earth magnet, it actually introduces to adopt the particular way and procedure of correcting drift of landing screen
針對地磁的影響情況，介紹了實際採用的糾正彩色顯像管著屏偏差的具體方法和途徑。To improve the steady performance of the system, a fuzzy - pid combined controller is applied to the magnetic bearings system : applying fuzzy control in a large error range ; applying classical pid control in a small error range. the simulation results show that this kind of control strategy can make the rotor of the magnetic bearings stabilize in a large range
本文首先設計了基本模糊控制器，並用matlab進行了模擬研究，為了改善系統的穩態性能，本文提出採用模糊- pid復合控制器，在大偏差范圍內採用模糊控制，小偏差范圍內採用傳統pid控制，並進行了磁懸浮轉子起浮特性的模擬，模擬結果表明這種控制策略有利於使磁懸浮轉子在大范圍內穩定。It turns out that : ( 1 ) without the magnetic field for a spherical quantum dot, the ground state energy is the same, and has only relations with the distance of the impurity deviation. after applied the vertical magnetic field, the effects of the ground state energies on the deviation of in - plane or perpendicular to the plane are very small, while the effects on the deviation distance are great, the larger the distance, the more ground state energies will be
我們發現： （ 1 ）當球型量子點沒有加垂直磁場的時候，基態能僅與雜質的偏離距離有關，當加上垂直磁場后，雜質水平和垂直偏離相同距離后，基態能差別不大，當偏離距離增加時，基態能增加。To implement this method, the structures of both the hardware and the software are analyzed in detail. the simulation and the experimental results show that this control technique can effectively minimize the torque ripple caused by distortion of the back - emf
闡述了實現這種方法的軟、硬體結構，模擬研究和實驗結果表明這種控制策略可以有效地抑制由於反電動勢的偏差所產生的電磁轉矩脈動。With its application area extension and the rapid development of modern unmanned aerial vehicle ( uav ), the large size and high power consumption become the problem of existing mhs. furthermore, the high cost of deviation compensation and error correction is another problem
隨著磁航向應用領域的拓寬和無人機技術的發展，已有的磁航向測量系統面臨的體積、重量、功耗偏大和調試、誤差補償復雜、費用偏高等問題亟待解決。Therefore, the transform of two operations is smooth and easy. on the other hand, the application of the space voltage vector can realize the maximum utilization of the bus dc voltage of the inverter
採用了改進積分器和新型的死區電壓補償等簡單且適用於直接轉矩控制的措施，以消除轉子初始位置偏差和死區效應對定子磁鏈估計的影響。分享友人