excitation variable 中文意思是什麼

excitation variable 解釋
激發變量
  • excitation : n. 1. 刺激，興奮，激發，鼓舞。2. 【物理學】激發；【電學】激勵、勵磁。3. 【植物；植物學】激感（現象）。
  • variable : adj 1 易變的，變化無常的，無定的 （opp constant steady）。2 可變的，能變的；變換的。3 【數學】變...
  1. The stator of aceg is connected to the grid and the three symmetrical excitation windings in the rotor are fed by converter. the magnitude and frequency and phase and phase sequence of excitation voltage can be controlled, so the magnitude and position of excitation mmf as well as the speed of rotor can be controlled. therefore, acegs have superior performances by contrast with conventional synchronous generators and induction generators, such as upstanding stability, power generation of variable speed constant frequency ( vscf ), adjusting active power and reactive power independently, and absorbing lag reactive power deeply

    交流勵磁發電機的基本結構與繞線式異步電機相同，其定子側接電網，轉子上採用三相對稱分佈的勵磁繞組，由變頻器提供對稱交流電勵磁，且勵磁電壓的幅值大小、頻率、相位、相序都可根據要求加以控制，從而可以控制發電機勵磁磁場大小、相對于轉子的位置和電機的轉速，使得交流勵磁發電機具有良好的穩定性及轉速適應能力、獨立的有功與無功調節能力和較強的進相運行能力，性能超越傳統同步發電機和感應發電機，因而有著廣闊的應用前景。
  2. With the development of science and technology more attentions have been concentrated on the performance analysis of the following systems : variable speed drive system of ac machines with power electronics and control devices, power energy system composed of ac machines and power lines, electric machine system consisting of ac machines and excitation control devices

    隨著科學技術的發展，交流電機與電力電子及其控制裝置組成的調速傳動系統、交流電機與電力傳輸線組成的電能系統、交流電機與勵磁控制裝置組成的電機系統等的性能分析越來越受到關注。
  3. Sunlight excitation color variable printing ink

    日光激發變色防偽油墨
  4. Abstract : polyphenylacetylenes were synthesized by rn ( nbd ) cl 2 and wcl6 / ph4sn catalyst systems in n2 at room temperature. polymers with high yield and high molecular weight were obtained. their structures were characterized by uv, ir, nmr and gpc, respectively. the fluorescence of the polymer solution with different concentration was investigated using variable excitation wavelength from uv to visible region. the relation between fluorescence and polymer structure was studied. the results showed that the molecular chain structure has great influence on fluorescence of the polymers. the emitting peak wavelength of fluorescence for the polymer of high stereoregularity is independent of solution concentration and excitation wavelength. the emitting peak wavelength of fluorescence for the polymer with disordered molecular chain arrangement varies with changing the solution concentration and excitation wavelength, and different emission sites in molecular chains and low emitting yield are shown. the measurement and analysis of fluorescence spectroscopy of polyphenylacetylenes may provide some useful information to judge the molecular chain arrangement in some conjugated polymers

    文摘:使用有機金屬銠、金屬鎢/四苯基錫催化劑體系聚合苯乙炔，分別獲得了高產率和高分子量的聚苯乙炔.使用uv ， ir ， nmr ， gpc等分別對聚合物結構進行了表徵.採用不同波長的激發光對聚合物熒光性能進行研究，詳細分析了聚合物結構與熒光性能之間的關系.研究結果發現，不同聚合物結構對聚合物熒光性能產生很大影響，規整性高的聚合物，將有較高的發光量子效率；聚合物規整性差，將可能導致多個熒光發光結構點，其熒光強度降低.聚合物熒光光譜研究將對某些共軛聚合物結構的規整性分析提供一些有用的信息
  5. Then, from the expressions of structural random response of the frequency domain, the computational expressions of the mean value, variance and variation coefficient of the mean square value of the structural displacement and stress response under the stationary random excitation or non - stationary random excitation are developed by means of the random variable ’ s

    在此基礎上，從隨機振動頻域分析出發，導出了在平穩或非平穩隨機激勵下，隨機結構的位移響應均方值、應力響應均方值的數字特徵計算表達式，通過算例驗證了所建模型和所提求解方法的正確性和有效性。
  6. Analysis of steady - state characteristic and excitation capacity for doubly fed ac excitation variable - speed induction motor

    無刷雙饋電機穩態特性的解析分析
  7. The results indicate that fuzzy control strategy is effective in the vibrant control of wind response of guyed mast and the structures under control with different input variables show remarkably different responses under earthquake excitation. in practical application, input variable can be selected on the basis of different control aims to obtain different control effects

    結果表明，模糊控制是一種有效的控制策略，受控結構在不同的輸入變量下其結構響應具有很明顯的差異，在實際應用中可依據不同的控制目標和控制要求靈活地選擇輸入變量以得到不同的控制效果。
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