fast axis 中文意思是什麼
fast axis
解釋
快軸-
Least squares solution of equation is used to calculate and adjustment transformation matrix at same time, transformation matrix is used to calculate the 3 - axis angle of star sensor. so is very fast and precise
利用方程組的最小二乘解求取轉換矩陣，通過轉換矩陣計算星敏感器的三軸姿態角，使姿態計算和平差同時進行，具有較高的姿態計算精度和計算速度。 -
The results indicate any elliptically polarized light can be compensated to become lineally polarized light throught / 4 wave - plate as long as the fast - axis ( slow - axis ) of / 4 wave - plate and the long - axis ( short - axis ) of elliptically polarized light are in the same orientation, but partially polarized light cann ' t
結果表明，只要/ 4波片的快（慢）軸與橢圓偏振光的長（短）軸方位一致，則任何橢圓偏振光經過/ 4波片后均可以補償為線偏振光，而部分偏振光經過/ 4波片后仍為部分偏振光。 -
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。 -
This allows not only for a fast and delay - free removal of molded parts but also minimized wear of the mechanical components of the axis
這一點不僅將無延時的取出成為可能而且使得軸的磨損程度降至最低。 -
In fast axis the divergentce of each beam is 0. 28o, in slow axis is 1. 4o, the area of field from the end of ld stack 20cm is 42 25mm2, average wave is 9. 3 %. so, it can meet the requirement of pumping, and the effect is fairly good
具體數據為:各輸出光束在快軸方向的發散角為0 . 28o ，在慢軸方向的發散角為1 . 4o ，輸出光場在距ld面陣發射端面20cm處的面積為42 25mm2 ，平均波紋起伏為9 . 3 % ，可見整形效果較好 -
Fast retardation axis
快速延遲軸 -
Fast and accurate alignment with pile location : the pile driver can move along the cross axis and can perform longitudinal and transverse movement when aligning with the pile location
快速準確找準樁位：樁機設有沿十字軸線運行特點，對準樁位時可同時進行縱橫移和回轉。 -
Fast alignment with the pile location : the pile driver can travel along the cross axis and can be aligned with the pile location through longitudinal displacement, transverse displacement and rotation
快速找準樁位：樁機設有沿十字軸線運行特點，主機可同時進行縱橫移和回轉對準樁位。
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