自生振蕩 的英文怎麼說

中文拼音 [zìshēngzhèndàng]
自生振蕩 英文
self-oscillation
  • 自 : Ⅰ代詞（自己） self; oneself; one s own Ⅱ副詞（自然;當然） certainly; of course; naturally; willin...
  • 生 : Ⅰ動詞1 （生育; 生殖） give birth to; bear 2 （出生） be born 3 （生長） grow 4 （生存; 活） live;...
  • 振 : 動詞1. （搖動; 揮動） shake; flap; wield 2. （奮起） brace up; rise with force and spirit
  • 蕩 : Ⅰ動詞1 （搖動; 擺動） swing; sway; wave 2 （無事走來走去; 閑逛） loaf; wander; roam; loiter; go a...
  1. But sometimes self - excited oscillations and noise may appear in hydraulic flapper - nozzle servo - valve if its construction is not selected very correctly. if self - excited oscillations and noise appear in hydraulic servo - valve, the performance of hydraulic control systems may lose stability

    因它具有非常快的響應速度，所以是目前應用最廣泛的伺服閥，但它也存在自激現象，容易產生自激噪聲和振蕩，嚴重影響伺服控制系統的穩定性。
  2. This dissertation is devoted to the investigation of the influence of self - excited oscillation jet on heat transfer enhancement

    本課題將helmholtz共振腔所產生的自激振蕩脈沖射流引入換熱器以實現強化換熱。
  3. Bias voltage, which are related to the superlattice structural paraments, the doped densities and the applied bias voltage. we have also investigated the characteristics of superlattice under hydrostatic pressure by simulations

    超晶格的負微分電導區還導致出現固定偏壓下隨時間變化的電流自維持振蕩，振蕩產生的條件依賴于其結構參數，摻雜濃度和外加偏壓的大小。
  4. Self - oscillation can be generated under suitable configuration and waterpower parameters

    在合適的結構參數和水力參數，就可以產生自激振蕩。
  5. Section ii describes the design approach and implementation of speech module on mcf5249 coldfire core. the speech codec optimizes g. 729a codes and added voice activity detection of g. 729b to save bandwidth ; the implementation of acoustic echo cancellation uses nlms algorithm and it can reduce echo though designing adaptive fir filter and speech detector ; the dtmf and cpt generate signal using two second order digital sinusoidal oscillators and detect signal by picking up the frequency information. but only get the frequency information is not enough in cpt detector, this thesis introduces a method

    其中對語音編解碼器的設計採用優化g . 729a代碼達到設計要求，並在此基礎上加入g . 729b的靜音檢測模塊，以進一步降低網路傳輸帶寬;對回聲消除器的設計採用nlms演算法，通過設計自適應fir濾波器和語音檢測器達到回聲消除目的;對雙音多頻設計，信號發生端採用構造靜態參數表並通過二階正弦振蕩器產生信號，信號檢測端提取頻率信息以檢測信號;對呼叫進程音設計，除了類似雙音多頻的信號發生及頻率檢測設計外，還需要檢測信號持續時間，作者設計了一種基於匹配狀態表的方法以檢測信號持續時間。
  6. In this dissertation, two kinds of optimization, methods are proposed. firstly, only these linking weights corresponding to the control rules that affect the control performance significantly are updated in order to reduce the compute works and speed up the training progress. secondly, the updating step is adjusted adaptively in accordance with the error and the change of error of the system based on the t - s model to get better performance

    針對模糊神經網路控制器一般存在著在線權值調整計算量大、訓練時間長、過度修正權值可能導致系統劇烈振蕩等缺點，提出了兩種模糊神經網路控制器的優化方法：在線自學習過程中僅對控制性能影響大的控制規則相關的權值進行修正，以減小計算量，加快訓練速度；基於t - s模糊模型，根據偏差及偏差變化率大小動態自適應調節權值修正步長，抑制控制器輸出的劇烈變化，避免系統發生劇烈振蕩。
  7. During the circuit design, the author analyzed the basic principle of the direct current motor, pwm control, h - bridge power driver, and two control techniques of h - bridge power drive circuit, designed its general structure, so the feasibility of the design is confirmed. then, reference, oscillator, power dmos gate drive circuit ( charge pump, bootstrap ), and dead time generation circuit are designed and analyzed in the sub - circuits. a current - controlled oscillator is presented in this thesis

    在電路設計中，作者介紹了直流電機的工作原理和數學模型、脈寬調制（ pwm ）控制原理、 h橋電路基本原理和h橋功率驅動電路的兩種控制模式，設計了驅動電路的總體結構，給出了電路的功能模塊，確定了設計的可行性，然後在子電路模塊中，重點分析設計了基準源電路、振蕩器電路、高端功率管柵驅動電路（電荷泵及自舉電路） 、低端功率管柵驅動電路和死區時間產生電路。
  8. Then we discuss the influence of laser produced by ase on signal gain

    討論了自發輻射產生的振蕩光對信號光增益的影響。
  9. The adm system mainly includes a oscillator, a clock generator, an amplifier, a pre - amplif ier, a comparator, an agc ( automatic gain control ), an adm analyzer & synthesizer, a d / a converter and a lowpass filter

    整個系統包括：內置振蕩器，時鐘產生器，放大器，前置運算放大器，比較器， agc （自動增益控制器） ， adm分析綜合器，數模轉換器以及低通濾波器。
  10. The shearing layer is carried by the jet and the eddy is formed because of the instability and selective amplification of shearing layer which will propagate to the downstream. as the eddy impacts the impinging wall, a wave of pressure disturbance with certain frequency is induced. this wave then propagates to the upstream with high speed, and results in the overlap and amplification of the waves when the frequencies of them are close with each other

    當前噴嘴流束中的不穩定擾動波在穿過腔內的剪切層時，剪切層對其有選擇放大作用，形成渦環結構，剪切流動中渦環與碰撞壁撞擊，在碰撞區域產生壓力擾動波並向上游反射，在上游剪切層分離處誘發新的擾動的產生，當新擾動與原擾動匹配時，射流上游就被不斷地受到周期性激勵，腔內就產生流體自激振蕩並在後噴嘴出口形成脈沖射流。
  11. Firstly, the mechanism of self - excited oscillation was introduced. when the water jets from the inlet nozzle flows into the chamber, the momentum exchange between the jet and the liquid in the chamber occurs, thus to form an unstable shearing layer with certain thickness

    這是一種嶄新的強化換熱技術，流體脈動能夠造成換熱器全程的換熱強化，而且自激振蕩脈沖射流強化換熱技術本身是一種無功強化的方法，無需輸入外部能量來產生擾動。
  12. In the double bioreactors system, a spontaneous oscillation is displayed in the first bioreactor due to a time delay ; a forced oscillation exhibits in the second bioreactor

    主要思路是設計兩個反應器串聯，使第一個反應器處于自激振蕩狀態，迫使第二個反應器產生強迫振蕩。
  13. Secondly, the helmholtz oscillator was designed. based on the flow network theory, the expression of intrinsic frequency was deduced. the main parameter of helmholtz oscillator was calculated

    對于同一結構的helmholtz共振腔，水力參數不同，所產生的自激振蕩脈沖射流的強弱也不相同。
  14. Finally, the experiment was performed in order to exam the effect. the pulsating liquid flows through a single pipe heated electrically. the heat transfer coefficients were measured under different conditions

    將helmholtz共振腔產生的自激振蕩脈沖射流引入換熱器后，當自激振蕩的強度達到一定程度后，可以強化換熱。
  15. When the pulsating jet was introduced in the heat exchanger, pulsating flow leads to the formation of an amount of vortices near the tube wall. the boundary layer was destroyed and the mixing of liquid was improved, so heat transfer enhancement was achieved

    將自激振蕩脈沖射流引入換熱器后，流體的脈動導致了壁面處旋渦的大量生成，增加了流體的摻混，實現強化換熱的目的。
  16. Just under this urgent consideration, based on the fact that self - oscillation can produce pulsation of flow, to influence the flow boundary layer, thus to increase convective heat transfer coefficient, it is necessary to devote to the mechanism of self - oscillation and apply it to a heat exchanger

    正是在這種迫切要求下，基於自激振蕩能產生脈沖流動而影響流動邊界層從而提高對流換熱系數來強化換熱的考慮，需要開展對自激振蕩的機理及其應用的研究。
  17. Self - oscillation initiated by helmholtz resonance chamber with different configuration under different waterpower parameters is introduced in the paper. the influence on the heat transfer enhancement of the heat exchanger by applying resonance chamber is discussed in detail

    本文介紹了不同結構的helmholtz共振腔在不同的水力參數下產生的自激振蕩情況，以及將自激振蕩應用於換熱器上對強化換熱的影響。
  18. For the same configuration resonance chamber, the intensity of the self - oscillation is changed by the waterpower parameters. when the pressure increases, self - oscillation intensity will increase. by applying the self - oscillation generated by the resonance chamber to the heat exchanger, and when the self - oscillation intensity achieves a certain degree, heat transfer will be enhanced

    對于同一結構的共振腔，水力參數不同，產生的自激振蕩強弱也不相同，隨著壓力的增加，自激振蕩的強度也增加；將共振腔產生的自激振蕩引入換熱器后，當自激振蕩達到一定程度的強度后，可以強化換熱。
  19. The effect of the resonant chamber is analyzed. during the experiment, fluid self - oscillation occurs under reasonable configuration and inlet waterpower parameter of resonant chamber, the intensity of the self - oscillation will be changed when the configuration and inlet waterpower parameters of the resonant chamber are changed

    實驗中發現在合適的結構參數和水力參數下，可以使流體產生自激振蕩，當共振腔結構尺寸及進口流體的水力參數發生改變時，產生的自激振蕩強弱也會隨之改變。
  20. Output window is the core of the gyrotron, which speciality can decide the speciality of the gyrotron greatly. the major subjects of output window design for high power gyrotron are to reduce the reflection and absorption power in order to enhance the gyrotron ’ s stability and protect the output window

    如果窗片的反射升高，在高功率情況下返回到高頻系統的功率將顯著上升，引起寄生模式在高頻系統中自激振蕩，從而降低迴旋管的高頻輸出功率和模式純度，乃至於使迴旋管不能正常穩定工作。
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