quadrant method 中文意思是什麼
quadrant method
解釋
四分儀制-
The other is supported by emerson network power co., ltd as an advanced research project. and this paper mainly introduces how to design and realize a four - quadrant running srd system to control a 3kw srm ( 8 / 6 poles ) based on a dsp ( tms320f240 ), which uses h - bridge power convertor and power - consumption braking method
本文基於省重點科研項目「開關磁阻電機新型控制及其調速系統」和深圳emerosn網路能源公司預研部項目，分析討論了如何設計實現一套以3kw的四相（ 8 6極） srm為控制對象以dsp為控制核心採用h橋式功率變換器和能耗制動方式的四象限運行srd系統。 -
8. this thesis initiates the 8 - quadrant angle computing method. this method can rapidly recognize the adjacency relationship of all the edges linked with the same node and avoid the complicated computing of trigonometric function. furthermore, this method can rapidly construct the adjacency relationship of all the arcs linked with the same node, in the construction of topological data structure in gis, which is helpful to the rapid construction of topological structure
創造性地提出了a象限角度計演算法，它可以實現快速確定與同一結點相連接的所有邊的鄰接關系；避免了復雜的三角函數計算，而且該演算法還可以在gis的拓撲數據結構建立過程中，快速地構建與同一結點相連的所有弧段間的鄰接關系，為拓撲結構的快速建立創造了條件。 -
The optimized division method to the spatial quadrant in the performance of the numerical control original code
數控原代碼開發中空間象限的優化劃分 -
I had planned a system of simple gestures, such as movement in quadrant 1 for shield, movement in quadrant 2 for laser beam fire, as a method of control, complete with particle effects - pulsing laser shields and sound effects taken from previous work with sdl
我設計了一個簡單的姿態系統作為控制方法，比如第一象限中的移動表示盾，第二象限中的移動表示激光劍，再加上粒子效果脈沖式激光盾和聲音效果來自以前用sdl完成的工作。 -
First, variable speed constant frequency wind energy convertion theory is described in this paper, then presents a review on the development of wind turbines control and the main types of generator and static converters used to interface variable speed wind turbines to the electric grid. then discuss main circuit constructure and advantage of direct drive wind energy conversion system and introduce pitch - control method for wind power traction and electric power stability. simply aerodynamic characteristic of the turbine is analysised and permanent magnet synchnonous generator math model is established. to convert the variable frequency electricity into utility grid, back to back four - quadrant pwm - vsi is used and three typies of control strategy is presented to capture the maximum wind energy and transmit energy. then simulation is implemented to test the control strategy. in the following chapter a simple ac - dc - ac converter with a dc - dc boosting chopper is proposed to transmit the wind energy into electricity energy and two control strategy is presented
建立了永磁電機和變流器的數學模型，針對雙pwm變頻器的特點提出了三種控制策略對變流器進行控制，通過變流器交-直-交的變換，將發電機發出的變頻變幅值交流電轉化為可用的恆定頻率的交流電，通過pwm調治能使其輸出功率因數為一，並且該控制系統功率因數為可調，能在特殊情況下同電網交換一定的無功功率，並通過對變流器的控制實現了最大風能俘獲的功能。最後採用matlab / simulink進行了模擬，取得了良好的模擬效果。在風力發電系統中，採用先進的最大功率俘獲演算法，能有效的從風中獲得最大的能量。
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