wind vector 中文意思是什麼

wind vector 解釋
風矢量；風向量
  • wind : n 1 風；大風，暴風；氣流；【機械工程】壓縮空氣。2 【航海】上風；風向；〈古語〉〈pl 〉方向。3 氣息...
  • vector : n 1 【數學】向量，矢量，動徑。2 【航空】飛機航線；航向指示。3 【天文學】幅，矢徑。4 【生物學】帶...
  1. On the other hand, it is indicated that the velocity field consists of a depth - independent inertial oscillation and a time - mean shear flow, which can be obtained by subtracting the inertial oscillations time mean in one inertial period. the hodograph of the velocity vector of time - mean flow at the different depths consists of a ekman spiral, and the surface velocity is 30. 3 ? to the right of the wind

    一維模式的流場結果表明，混合層中的流場是由慣性波動與時間平均流兩部分疊加而成，且通過時間平均消去慣性波動后得到平均流，其不同深度的流速矢量構成一ekman螺旋，表層流速矢量相對風向右偏了30 . 3 』 。
  2. Upper - air vector mean wind

    高空平均矢量風
  3. In this paper, several scheme of vscf is compared firstly, of which gets doubly - fed generating mode. doubly - fed vscf wind power generating system uses a doubly - fed induction generator, which rotate speed can be able to change with wind turbine, and it ensures a constant - frequency output, by controlling the frequency of current input into rotor windings. in vector trans control system, the control of stator active power and the control of stator reactive power can be essentially decoupled, and the former is via torque component and the latter is via exciting component of stator current

    本文首先比較了幾種變速恆頻方案，從中選擇了雙饋式變速恆頻方案；它運用雙饋電機的工作原理，允許發電機轉速變化，而在電機轉子側接入低頻勵磁電流，通過控制該電流的頻率，保證雙饋電機定子輸出的頻率恆定；再結合矢量控制技術，通過調節轉子電流來控制定子電流的轉矩分量和勵磁分量，相應獨立地控制發電機輸出的有功功率和無功功率。
  4. According to the spatial distribution characteristic of the most likely ambiguities in each seawinds wind vector cell, a new method for seawinds ambiguity removal is derived and discussed theoretically for its adaptability

    根據seawinds散射計第一模糊解的空間分佈特性，歸納出一套適合seawinds散射計的模糊去除方法，並在理論上探討了其適應性。
  5. Results of experiment b demonstrate that a convergence zone of wind vector and water vapour with dense pressure gradient is formed alone the coast after tc ' s outer circulation encountering land, which results in more precipitation

    試驗b的結果顯示，熱帶氣旋外圈環流與陸地接觸後到中心登陸前後，沿海岸線一直存在一條氣壓梯度相對密集的風矢量、水汽輻合帶，引起該處降水增多。
  6. The maximum likelihood estimation algorithm for seawinds scatterometer wind vector retrieval generates 2 4 wind vector ambiguities, so a circle median filter is needed to perform the ambiguity removal

    利用最大似然法mle對seawinds散射計數據反演得出的風矢量，一般存在24個模糊解，故需採用圓中數濾波法進行模糊去除。
  7. When tc approaches to coast, under the squeezing effect between tc and land, convergences of wind vector and pressure gradient are intensified between tc " s center and coast, and, a new high wind domain forms

    隨著熱帶氣旋不斷接近陸地，由於擠壓作用，二者之間區域的風矢量輻合和氣壓梯度不斷增強，形成新的大風區，造成水平結構的變化。
  8. In order to validate the correctness of the simulation, the flow velocity of x vector is measured to compare the flow field between the simulation and the experiment in wind tunnel. the results indicate that the flow field is improved and more stable than the original shield flow field. the tendency between the improved shield and the original shield from simulation is consistent with the tendency from experiments

    開口罩蓋流場由於相對穩定，模擬和試驗的測點流速平均相對誤差為15 ，未開口罩蓋流場中由於渦流影響較大，平均相對誤差為22 . 45 ；同時驗證了結構改進前後罩蓋流場的模擬比較結果和試驗比較結果的趨勢是一致的。
  9. In the simulation experiment, the whole system model is founded by the software matlab / simulink. using the stator active power computed from the maximal output power of the wind turbine as the reference value of vector control system, the result of experiment approves that the control strategy is true. not only the frequency of stator current is constant, but the control of stator active and reactive are decoupled, and the output power tracks the maximal power of wind turbine

    在最後的模擬實驗中，本文利用matlab軟體建立了系統各部分的模擬模型，選用與風力機最大輸出功率對應的定子有功功率作為矢量控制的參考值做了模擬實驗，並給出了模擬結果，驗證了定子磁鏈定向矢量控制策略的正確性：既保證了定子輸出頻率的恆定，又達到了有功功率無功功率獨立解耦控制的目的，同時還較好地跟蹤了風力機的最大功率輸出。
  10. It proves that the capability of wind generator is determined to slip, rotor voltage and angle between rotor voltage and stator voltage, and investigates the control model based on the stator field - oriented vector control

    文中還分析了雙饋型風力發電機的轉矩特性和穩態特性，證明了發電機的性能由轉差率、轉子電壓和定轉子電壓間的相位角差決定的。
  11. Using the differentials in reception of omega signals by the airborne radiosonde and the ground station, the position of the radiosonde and hence the wind vector was determined

    在探測過程中，無線電探空儀由奧米茄站接收甚低頻信號，並轉播至京士柏地面站。
  12. By extracting the necessary information in the gps signal and merging with the satellite orbital data, the position of the radiosonde and hence the wind vector is calculated

    地面站接收到gps信號后會抽出所需資料，再加入有關衛星軌道的數據，便可計算出無線電探空儀的位置，從而計算出高空風向和風速。
  13. In this paper, the p - vector method which is based on - spiral method and thermal wind relation is used and a good result is obtained, which indicates the p - vector method can be used in the large - scale ocean area and invert the current system well

    這表明了基於螺旋方法和熱成風關系建立起來的p矢量方法是可行的；該方法在大洋海區有較好的適用性，並能得到較好的診斷結果。
  14. The system uses the arrowhead to express the speed vector of wind field and uses the contour line and color cloud to express the height of wave field

    風場風速矢量場採用方向箭頭實現可視化，並且可同步顯示氣壓場信息，海浪場可視化採用等高線、彩色雲圖、文本數值輸出，也可實現風場同步。
  15. Monthly normals of vector mean wind at standard levels at 00 utc 1961 - 1990

    協調世界時零時各標準層的正常月平均矢量風1961 - 1990
  16. In usual vector notation a horizontal wind blowing from 270 degrees would be represented by a vector with its origin at the intersection of the two horizontal axes.

    在通常的向量符號中，水平風從270吹來時，應當表示為零點在兩個水平軸的交點。
  17. The author firstly analyzed the mathematic model of the cascaded brushless doubly - fed machine ( cbdfm ) on the dq and mt coordinate rotating at rotor speed and synchronous speed seperatly, and the equivalent circuit of steady state. the author also analyzed the stator power winding flux oriented vector control strategy of the cbdfm as vscf wind power generator and validated the validity of the model and strategy by the simulation analysis

    此外，本文還首次詳盡地分析了級聯式無刷雙饋電機在轉子機械速dq坐標系、定子同步速mt坐標系下的數學模型，穩態等效電路及作變速恆頻風力發電機運行時的定子功率繞組磁鏈定向矢量控制策略，通過模擬分析驗證了模型和策略的正確性。
  18. The dynamic performance of vscf double - fed wind power system is discussed. it is shown that vscf double - fed wind power system with stator field - oriented vector control has good performance

    並且採用定子磁場定向的矢量控制方法實現對風力發電機的控制，分析了雙饋型變速恆頻風力發電系統的動態特性。
  19. This thesis shown that vscf ac exited wind power system with stator field - oriented vector control has a series of good performance and all the control schemes which had been introduced in this paper has its feasibility

    本文研究結果表明，採用定子磁場定向矢量控制的交流勵磁風力發電機系統具有許多優越的性能，且本文採用的控制技術和進行的控制相關分析都是可行的。
  20. Also this paper investigates the control model based on the stator field - oriented vector control. this paper discussed the newly excitation system - matrix converter and compares the const speed const frequency asynchronous wind generators and vscf generator system

    本文在模擬風速和風機特性的同時，構造整個系統模型並對變速恆頻和恆速恆頻技術的優缺點進行了模擬分析比較。
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