未擾動流 的英文怎麼說

中文拼音 [wèirǎodòngliú]
未擾動流 英文
free-stream
  • 未 : Ⅰ副詞1 （沒） did not; have not 2 （不） not Ⅱ名詞1 （地支的第八位） the eighth of the twelve ear...
  • 擾 : Ⅰ動詞1 （擾亂; 攪擾） harass; trouble 2 （客套話 因受人款待而表示客氣） trespass on sb s hospital...
  • 流 : Ⅰ動1 （液體移動; 流動） flow 2 （移動不定） drift; move; wander 3 （流傳; 傳播） spread 4 （向壞...
  • 擾動 : excitation; turbulent motion; turbulence; destabilization; [物理學] perturbation motion; [地質學]...
  1. The main features of the apparatus are focus on small volume, light weight, no iron core, no magnetic saturation and no ferreous resonance, moreover, related advantages such as the large range of transient and frequency response, excellent electrical magnetic compatibility, oil - free configuration, reliable insulation structure, are all the trends of current transformer in the future. meanwhile, it should agree with the future power gauge and digital, computer, automatic relay protection. it will meet the demand of digital power network

    它具有體積小、重量輕；無鐵芯、不存在磁飽和與鐵磁諧振問題；動態響應范圍大，頻率響應寬；抗電磁干擾性能強；無油化結構、絕緣可靠、價格低等優點；是未來電流互感器發展的方向，是新一代電力數字網發展的需要，適應電力計量和保護數字化、微機化和自動化發展的潮流。
  2. To analyze some key technologies of optical network relative with rwa in detail, such as transmission, switching and internetworking ; to emphasize on the research of function, fabric and performance of optical cross - connection ; to carry out numerical simulations for crosstalk introduced by optical cross connect and to present measurements for suppressing it such as doubly filtering, fixing optimum decision threshold and appropriately choosing the number of multiplexed wavelengths ; 3. to research the fundamental principle and some problems relative with rwa, including the type of optical network, the type of traffic, the type of service, the survivability of optical network ; to classify and compare rwa algorithms and particularly research some dynamic rwa algorithms ; 4. to present reserved light - path and classify network resource such as used, unused and reserved status, to emulate establishment of all - optical connection in optical network through modified rwa algorithm and show effectively reducing setup time of all - optical connection utilizing reserved light - path ; to research rwa algorithms of multi - fiber network, to present new link weight functions dependent on node degree, unused fiber ( s ) per wavelength - layer and routing policies, to perform emulation of rwa based wavelength layer graph applying new link weight functions and show them make algorithms better performance and network lower blocking rate ; 5

    詳細分析了與rwa相關的光網路關鍵技術，包括傳輸、交換、組網等，重點研究了光交叉連接的功能和結構、性能，對其引入的串擾進行了詳細分析，選擇恰當的器件參數進行了數值模擬，並提出了抑制措施（如雙重濾波、優化判決門限、選擇恰當的復用波長數） ; 3 .研究了光網路的r認叭的基本原理、與r認叭的幾個相關問題（光網路類型、業務類型、流量類型、光網路生存性） 、 r認人演算法的分類和比較，具體研究了幾種動態r場人演算法; 4 .研究了以全光連接建立時間為優化目標的r認認演算法，提出預置光路的概念，對網路資源進行狀態分類（佔用、未佔用、預置） ，利用改進的r認叭演算法模擬，預置光路可為部分新到的連接請求快速建立連接，從而提高網路性能;研究了以多光纖網路連接阻塞率為優化目標的r認城演算法，提出了以節點度數、每個波長分層的空閑光纖數以及路由策略決定的幾種鏈路權重函數，利用基於波長分層圖模型的并行r場人演算法模擬，利用新的鏈路權重函數使得演算法具有更優的性能，使網路具有更低的連接阻塞率。
  3. Seniority configuration is unrelated to performance, but performance of the pyramidal organization is higher than diamond for age structure ( 2 ). the effects of age and seniority structure on performance do not seem to disappear even after turnover rate is introduced as a intervening variable, suggesting a robust direct effect of organizational demography on performance

    （ 2 ）無論是年齡結構或年資結構型態對組織績效的影響，均未受到人員流動的干擾而有所改變，此結果肯定了人口結構對組織績效的直接效果。
  4. Comparing to the classic pi control, the results of the simulations show that the proposed controller is effective. it has a robust dynamic performance with a strong capability of restraining unmodeled dynamics and bounded disturbances

    通過換流站控制的模擬實驗，與傳統的pi控制模擬結果相比較，這種新穎的換流站控制器更加符合實際，具有抑制系統未建模動態和有界擾動的能力，因此具有更強的魯棒性和自適應學習能力以及較好的動態性能。
  5. First, we take the analysis of phase - plane on the invariant plane for the perturbed and unperturbed systems. next, we applied the singular perturbation theory to establish the persistence of invariant manifolds, as well as the " fiber represent at iones " of these manifolds. finally, by using the global integrable theory of the unperturbed system and melnikov measurement we obtai n the existence of homoclinic orbits for the cqs equation under the generalized parameters conditions

    首先，我們在常值平面上對擾動和未擾動系統進行相平面分析；然後利用奇異擾動理論討論不變流形的保持性，並給出不變流形的纖維表示；藉助于未擾動系統的可積結構和melnikov測度，我們得到了三次?五次非線性schr （
  6. On the basis of the test about air conditioner, its load characteristics are analyzed, including the static characteristics, drop out characteristics, starting characteristics and its responses to voltage dips. it shows that the current impact can reach five to eight multiples when the air conditioner started and come back within 0. 3 to 0. 5 second. 0. 6 pu voltage is the critical voltage whether the air conditioner will stall

    分析發現，空調啟動時電流沖擊倍數可達5 8倍，在0 . 3 0 . 5秒之內平息； 0 . 6u _ n為空調停機的臨界電壓，因此空調的電壓擾動特性可以分為兩種情況：一為較小擾動情況下空調尚未停機時的動態；另一為大擾動導致空調停機時的動態。
  7. It has been widely applied in personal communications, mobile communications and the field of broad band wireless access, and it has also been regarded as the main air access of the third generation mobile communications, because comparing with tdma and fdma, cdma has greater system capacity, higher frequency efficiency and stronger anti - interference ability, at the same time it still has the potential of solving the conflict of limited frequency resource and limitless user request

    相對于tdma ， fdma等多址技術而言，它具有系統容量大，頻帶利用率高，抗干擾能力強，保密性能好等優越性，同時還具有緩解有限頻帶與無線用戶需求之間矛盾的潛力，因而在個人通信，移動通信，寬帶無限接入領域都得到了廣泛的應用，也被普遍認為是未來第三代移動通信的主流空中介面技術。
  8. Besides, the converters have unmodeled dynamics. so the traditional controller for hvdc based on the classical control theory can not meet the requirements in practice. although, pi controllers are widely used in the hvdc systems, they have high sensitive responses to random disturbances, low robust performance, and can not solve some problems in power systems, such as unmodeled dynamics, nonlinear uncertainties

    直流輸電線路中的換流器具有很強的非線性，系統的運行工況隨時都會發生改變，系統擾動發生的地點、類型及嚴重程度具有隨機性；此外，換流器還含有未建模動態部分，這些因素使得基於直流輸電系統準靜態模型的常規控制器設計方法常常不能很好地滿足系統的實際要求。
  9. Based on the reference [ 22 ], the dynamical modeling converters for hvdc system have been transformed to a nonlinear system represented by input - output model with unmodeled dynamics and bounded disturbances, and a robust adaptive output - feedback nonlinear controller is designed. the controller counteracts the uncertain dynamic nonlinearities and bounded disturbances by nonlinear damping terms, and unmodeled dynamics by a dynamic signal

    本文在文獻[ 22 ]的基礎上，對高壓直流輸電系統換流站動態模型進行變換處理，將其化為一類具有含未建模動態和有界擾動的輸入-輸出非線性系統，並設計了一種魯棒自適應輸出反饋控制器，利用非線性阻尼項來抑制系統的動態不確定性和有界擾動，引入一動態信號來抑制系統的未建模動態。
  10. Abstract : a numerical investigation of three - dimensional separated flows about a hemisphere - cylinder is presented. the analysis has been restricted to transonic and laminar flows. results are given for the complex flow field structures including shock, boundary layer, separated flow, vertical flow and their mutual effects. the topological structures of the separated flow is shown

    文摘:本文數值模擬了半球柱在跨音速、中等攻角時的粘性層流繞流，研究了流場中的復雜三維分離形態結構，其中包含流向與橫向的主分離、二次分離、以及激波邊界層的相互干擾，解釋了在球柱接合部精確捕獲的壓力波動與流動主分離、二次分離的影響關系，這個現象是前人的計算5 ， 6未捕捉到的。
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