諧振導體 的英文怎麼說
中文拼音 [xiézhèndǎotǐ]
諧振導體
英文
resonance probe-
The accuracy of the mfc was 3. 8 % fs, and the rotor flow meter ' s was 2 % fs. 2. the measurement of pressure was carried out by using semiconductor silicon piezometer
（ 2 ）壓強的測量採用半導體硅壓阻式壓強傳感器，通過測量mpt進氣管路的靜壓，結合理論分析計算得到mpt諧振腔的總壓。The key components in laser gyro is he - ne ring laser, and the reciprocal action theory between light and medium is the base in studying the ring laser, use the lamb half classical theory, and on the base of density matrix theory, the optical brounch equation was established, which described the movement of amplifying medium atom in the ring syntonic cavity, and according to the medium polarize theory the self consistent equations was deduced, which describe the light intensity and phasic of the counter - propagating wave. on the basis of this equations, adopted the simulation software matlab and virtual instrument programming language labwindows / cvi, we can do some simulated experiments in study the phenomenas such as amplify and dispersive characteristic of medium, mode pushing effection, burned hole effection and pattern competition, lock - in of frequency and the characteristic of light intensity and phasic of the counter - propagating wave in laser gyro
激光陀螺的核心部件為he - ne環形激光器，而掌握光與介質的相互作用理論是研究激光器的關鍵，採用拉姆半經典理論為主，在密度矩陣理論的基礎上，推導環形諧振腔中描述he - ne氣體增益介質原子運動的光學布洛赫方程，運用介質極化理論得出描述激光陀螺反向行波的光強、位相所滿足的自洽場方程組，在此基礎上，運用matlab模擬軟體和虛擬儀器編程語言labwindows / cvi ，對激光陀螺中的介質增益色散特性、頻率牽引效應、燒孔效應及模競爭、閉鎖效應及環激光的光強和相位特性進行模擬試驗研究，並且運用全量子理論，對激光工作原理進行分析，得出二能級系統單模輻射場的光子數密度分佈，得出激光場的光子統計分佈，模擬激光場的動態建立過程。Secondly, based on the syntony frequency and the elasticity mechanics and other correlative professional knowledge, establishes a suit of fsm vibration module system, selects the structure, material and the process and treatment technique of the elastic element in the elastic system of the mirror, analyzes a lot of factors which affect the structure of the rapid controlling reflector and provides the derivation formula
以諧振頻率為出發點，利用彈性力學等相關專業知識，建立一套fsm的振動模塊系統；確立了反射鏡彈性系統中彈性元件的結構、材料的選擇，及加工，熱處理。分析了影響快速控制反射鏡結構的諸多因素，給出其相關推導公式，最後應用solidedge和cosmos軟體對該結構進行了計算機模擬。While the flutter self - excited loads of a bluff section has a quality of obvious nonlinearity. and the application of flutter derivatives to self - excited loads of the bluff section is close to a linear relationship. 5
而鈍體斷面的顫振自激力高次諧波分量較大，具有較明顯的非線性響應特徵，驗證了用顫振導數表示鈍體的自激力只是一種線性近似。The devices for detecting phase - to - ground fault in ineffectively grounded systems are seldom functionary at present. based on thousands of experiments in high - voltage laboratory in north china electric power university, the reasons for misjudgment and the effective measures to avoid it are presented in this paper : to change pt connection form to prevent from ill - effects of ferro - resonant overvoltage ; to increase soft measures to resist against interference ; to adopt neural network method to obtain the virtual value of the detect way
依據上千次實驗，我們找到了一些導致選線誤判的影響因素，並提出幾點防止誤判的措施，包括改變pt接線方式，避免鐵磁諧振對選線的影響；通過對故障檢測方式的處理和使用連續判斷技術增強裝置的軟體抗干擾能力；嘗試採用神經網路演算法設定選線方法的有效域等。The optical feedback self - mixing model is studied when the external cavity of a semiconductor laser suffers a harmonic vibration
摘要在外腔簡諧振動條件下，研究半導體激光器的光反饋自混合干涉系統模型中的測量參數。A lcc multi - resonant ( mr ) network is added to the traditional three - level converters to realize zvs. the unique arrangement of a multi - resonant network results in absorption of all major parasitic components hi the resonant circuit, such as transistor output capacitance, diode junction capacitance and transformer leakage inductance, which can eliminate parasitic oscillation in the converter
它的優點在於諧振電容吸收了開關管和續流二極體的結電容，諧振電感吸收了變壓器的漏感，使得開關管和續流二極體都能在軟開關的條件下完成導通和關斷過程，消除了電路中的寄生振蕩。According to the experimental parameters of mpt, the main performance parameters of different propellants have been given by engineering performance computation under designed and working states, which has great importance for the experimental research and the future work. 2. for helium and argon, the factors which influence on mpt ' s vacuum steady work have been discussed such as the material of microwave tie - in, the distance between the probe and inner - conductor, the position of the inner - conductor, the input power of microwave, the mass flowrate of propellant and the vacuum pressure of environment, and the influence has been discussed of the microwave power and the mass flowrate of propellant on the pressure of the resonance cavity, thrust, reflected power and the temperature of the resonance cavity
論文的工作和新見解主要包括： 1在設計狀態和工作狀態下，根據mpt的實驗參數，對mpt使用不同工質時的性能進行了工程估算，這對mpt現階段的實驗研究和今後的研究有重要的指導意義； 2對于he 、 ar推進工質，討論微波的接頭材料、探針與內導體的間隙、內導體的位置、微波的輸入功率、工質的質量流量以及環境真空度對mpt真空啟動和穩定工作的影響，並探討微波的輸入功率、工質的質量流量對諧振腔壓強、推力、反射功率以及諧振腔溫度的影響； 3對于n _ 2 、 h _ 2 、 nh _ 3 、 h _ 2o推進工質，主要討論與he 、 ar工質不同的特性，並從長遠的眼光和工程應用的角度，認為其可行性不容置疑，潛在優勢不可忽略，是未來mpt應用的主流推進工質。The clamping diodes conduct only once in a switching period, and the resonant inductance current is smaller in zero state, leading to a higher efficiency and reduced duty cycle loss. the operation principle of the improved converter and the comparison with the original converter are analyzed in this paper. the effect of the blocking capacitor in series with the transformer or resonant inductance is discussed, and a best scheme is determined
本文將諧振電感和變壓器交換位置，使變壓器與滯后橋臂相連，這樣箝位二極體在一個開關周期中只導通一次，同時零狀態時諧振電感電流較小，有利於提高變換效率和減小占空比丟失，本文分析改進后變換器的工作原理，並與改進前的變換器進行對比，討論隔直電容在不同位置對變換器工作的影響，確定一種最佳工程方案。Fiber optic gyroscope ( fog ) is an advanced instrument to measure the angle velocity of rotation body. it realizes the measurement of optical sagnac effect using solid all - fiber structure. it overcomes mechanical - electrical gyro and ring laser gyro ' s reduction of dynamic performance and life - span caused by the structure or the requirement of high rotation rate mass
光纖陀螺是一種先進的感測載體自轉角速度的測量儀，它利用固態的全光纖結構實現光學sagnac效應的量測，克服了機電陀螺及環形激光陀螺在構造上或因需要一定的高速度旋轉質量，導致動態性能及壽命的降低，或因諧振要求過于苛刻，使工藝復雜性及成本過高等一系列缺點，從而成為當今最具有競爭性的新型陀螺。Fiber optic gyroscope ( fog ) is an advanced instrument to measure the angle velocity of rotation body. it realizes the measurement of optical sagnac effect using solid all - fiber structure. it overcomes mechanical - electrical gyro ' s reduction of dynamic performance and life - span caused by the structure or the requirement of high rotation rate mass, and the laser gyro ' s fabrication technology complication and high cost caused by the rigid requirement of optical circuit resonation
光纖陀螺是一種先進的測量載體絕對角速度的儀表，它利用固態的全光纖結構和sagnac效應來實現測量，克服了機電陀螺在構造上需要一定的高速度旋轉質量，導致動態性能及壽命的降低，或者環形激光陀螺因諧振要求過于苛刻，使工藝復雜性及成本過高等一系列缺點，從而成為當今最具有競爭性的新型陀螺。The analyses given in this paper to quasi - three - level for 946 nm laser are complete. the relation between 946 nm laser transmission and optimal crystal length has been derived from the rate equations describing the population inversion and the photon density in the laser cavity in the steady - state case. the minimal claims to coating have been given on the base of contrasting 946 nm transmission with 1064 nm transmission in the condition of different cavity losses and how the pump beam radius in the laser crystal and optimal crystal length affect the laser threshold and output power of 946 nm laser has been given as well
對產生946nm譜線的準三能級結構給出了較為完整的分析，利用激光諧振腔處于穩態時的速率方程，導出了準三能級nd ： yag946nm起振時，透射損耗與最佳激光晶體長度的關系，在與1064nm透射損耗相比較的基礎上，給出了不同的腔損耗情況下的最低鍍膜要求，並且給出了激光閾值、輸出功率和最佳激光晶體長度及泵光光斑大小的關系，這為設計室溫下高效運轉的946nm激光器的提供了理論基礎，這種分析方法對研究此類低增益，準三能級或三能級激光系統輸出特性有借鑒意義。First, we concisely recall the formation and development of bose - einstein condensa - tion ' s theory and it ' s experimentation. secondly, we briefly intro - duce some properties of weakly interactive bose gases, and derive the nonlinear gross - pitaevskii equation that is the condensate macroscopic wave function ' s equation. thirdly, we give a exam - pie, an approximation analytical solution of the gross - pitaevskii equation in a spherical symmetric harmonic trap is derived by a perturbation theory approach, this solution is consistent with that numerically obtained
全文共分為四章：第一章首先簡要的介紹和回顧了玻色-愛因斯坦凝聚理論的產生和發展，以及其實驗研究的過程，然後著重介紹了弱相互作用的玻色氣體的一些性質，並推導出了凝聚體宏觀波函數滿足非線性的gp方程，還以球對稱的諧振子勢為例，用標準的微擾方法求出了定態的gp方程近似解，發現其與已知的數值結果符合得很好。30 mhz measurement of quartz crystal unit parameters by zero phase technique in a pi - network - part 4 : method for the measurement of the load resonance frequency fl, load resonance resistance rl and the calculation of other derived values of quartz crystal units, up to 30 mhz
用型網路的零相位法測量石英晶體元件參數.第4部分:石英晶體單元負荷諧振頻率fl負荷諧振電阻rl的測量方法及其他石英晶體元件導出值的計算方法Based on the character of the eof gain at 1550 nm, a laser diode ( ld ) worked at 980 nm and acted as the pumping source, a eof employed as gain medium, and a fiber grating used as reflector, an ring - cavity all - fiber laser worked at 1562. 5 nm was demonstrated with an output power of 2. 0 mw and a bandwidth of 0
本文主要基於摻鉺光纖在1550nm波段的增益特性，利用帶尾纖的980nm半導體激光器作為泵浦源，鉺光纖作為增益介質，布拉格光纖光柵作為諧振腔反射鏡，實現了波長為1562 . 5nm的環形腔光纖激光器，得到了2mw的激光輸出。A fem software as an important tool, work has been done as follows : the method using fem to design anomalous structure of transducers was adopted ; the vibration modes of the elastic pipe, ultrasonic transducers and system has been analyzed in piezoelectric coupled field. resonant frequencies of the transducers have been matched quite well with resonant frequencies of pipe, which can make it easy and accurate to design a transducer. the values of equivalent dynamic capacitors and dynamic inductances of ahead nine orders have been gotten derived by fem method, and fem equivalent circuit of the transducers has been built
以ansys有限元軟體為主要分析工具完成了設計工作;在經典換能器設計理論和前人經驗的基礎上，對不規則形狀的換能器採用了有限元的方法設計;在耦合場中分析了換能器、導管及整體裝置的振動情況，使換能器的諧振頻率與導管的諧振頻率達到了較好的匹配，使設計變得更加容易和準確;利用有限元方法建立了振子的等效電路模型，求出了其前6階模態的等效動態電容電感值，為阻抗匹配和驅動電路的設計提供了依據。The goal of this subject is to sum up and exploit our technique how to produce low phase noise wideband vcos, through investigating and studying the basic theory and recent research fruits, combining national condition, and produce our low phase noise wideband vcos. using high q components, such as : coaxial resonator, dielectric resonator, makes bandwidth of vco become narrower, so that recently common wideband vcos generally make inductor and capacitor ( lc ) as resonators, combining varactors with wide range tunable capacitance, and achieve the wideband
本課題旨在通過對低相噪寬帶vco的基本原理、國內外在這方面的進展，結合國內的實際情況進行研究，總結和開發出自己的方法，形成自己的理論。並把它運用於實踐，以製造出低相噪的寬帶vco 。由於加入高q元件，如：同軸諧振器、介質諧振器等，會導致振蕩器帶寬比較窄，目前的寬帶vco一般採用電感電容（ lc ）作為諧振元件，輔之以大變容範圍的變容二極體，達到寬帶的目的。Transmission line analysis of generalized resonance in multiple conductors open system
多導體開放系統廣義諧振傳輸線分析Abstract : since piezoelectric resonant filter can not effectively prohibit higher - frequency harmonic, the mechanism of this problem has been discussed by means of a specific example which shows that there exists lots of undesirable resonant frequencies of piezoelectric that would let pass undesirable signals. to solve this problem ， an ameliorated electrostatic mechanical resonant filter is proposed and a specific case is demonstrated. the example of electrostatic resonant micro - bridge asserts that by adjusting the gap of exciting capacitance the higher - frequency vibrating model of micro - bridge cannot be excited based on orthogonal character of intrinsic vibrating shape of micro - bridge, so that this kind of resonant filter can effectively filter out undesirable higher - frequency harmonic
文摘:提出壓電諧振濾波器不能很好地濾除高頻諧波的問題，結合一個具體例子理論推導了壓電諧振濾波器存在許多干擾諧振頻率，從而不能有效濾除一些特定頻率的干擾信號.為了解決這個問題，提出一種改進型的靜電激勵諧振濾波器.為了說明其可行性，具體分析了改進型雙端固支微梁靜電激勵諧振濾波器，理論推導證實基於雙端固支微梁的各階振型正交的原理，通過適當調整激振電容的間距，雙端固支微梁的高階振動模態受到很好的抑制，因此這種諧振濾波器可以有效阻止濾波器中心頻率的高頻諧波的通過Since piezoelectric resonant filter can not effectively prohibit higher - frequency harmonic, the mechanism of this problem has been discussed by means of a specific example which shows that there exists lots of undesirable resonant frequencies of piezoelectric that would let pass undesirable signals. to solve this problem ， an ameliorated electrostatic mechanical resonant filter is proposed and a specific case is demonstrated. the example of electrostatic resonant micro - bridge asserts that by adjusting the gap of exciting capacitance the higher - frequency vibrating model of micro - bridge cannot be excited based on orthogonal character of intrinsic vibrating shape of micro - bridge, so that this kind of resonant filter can effectively filter out undesirable higher - frequency harmonic
提出壓電諧振濾波器不能很好地濾除高頻諧波的問題，結合一個具體例子理論推導了壓電諧振濾波器存在許多干擾諧振頻率，從而不能有效濾除一些特定頻率的干擾信號.為了解決這個問題，提出一種改進型的靜電激勵諧振濾波器.為了說明其可行性，具體分析了改進型雙端固支微梁靜電激勵諧振濾波器，理論推導證實基於雙端固支微梁的各階振型正交的原理，通過適當調整激振電容的間距，雙端固支微梁的高階振動模態受到很好的抑制，因此這種諧振濾波器可以有效阻止濾波器中心頻率的高頻諧波的通過分享友人