指振法 的英文怎麼說
中文拼音 [zhǐzhènfǎ]
指振法
英文
tremble manipulation with finger-
First, it was taken that a discuss about the effects of geometry parameters of each piezocrystal on direction parameters ( main lobe width, side lobe amplitude, elimination of grating lobes ), amplitude of ultrasonic pressure, element viberation pattern, mutual radiation among elements, efficient test regions, ability to keep accurate and near - field distance and so on. based on the direction of ultrasonic field in ulpa deduced by ourselves. in addition, on the base of integrating all kinds of factors, it was put forward that the principle and method for optimized design of geometry parameters of piezocrystals in ulpa transducer, and its design programme and interface were compiled
首先在推導超聲相控線陣換能器聲場的指向性的基礎上，就各個晶片幾何參數對指向性指標（主瓣寬度、旁瓣幅度、消除柵瓣） 、聲壓幅值、陣元振動模式、陣元間互輻射、有效檢測區域、精確控制能力、近場長度等方面的影響進行了論述，並在綜合各方面影響的基礎上，提出了晶片幾何參數優化設計的原則和方法，編寫了設計程序和界面。Kneading massage in soft and comfortable, multi kneading heads to realize massage in large area, served with special vibration and shiatsu massage
揉捏推拿按摩，手法柔和舒適，多頭式推拿揉捏球，可進行大面積推拿按摩。具有獨特振動按摩及指壓按摩功能。Observe, " said villefort, smiling, " i do not mean to deny that both these men were revolutionary scoundrels, and that the 9th thermidor and the 4th of april, in the year 1814, were lucky days for france, worthy of being gratefully remembered by every friend to monarchy and civil order ; and that explains how it comes to pass that, fallen, as i trust he is forever, napoleon has still retained a train of parasitical satellites
請注意， 」維爾福微著笑說， 「我並不是在否認我剛才說的這兩個人都是鬧革命的混蛋，我承認熱月九日熱月九日是羅伯斯庇爾等人被捕的日子。和四月四日這里指的是年月初拿破崙退位被囚的日子是法國並不幸運的兩個日子，是值得王朝和文明社會的朋友們慶祝的日子，我想說的是，雖然我想信拿破崙已永遠一蹶不振，但他卻仍然擁有一批狂熱的信徒。3. detailed analyzing the reason for the discrete reaching law to cause system chattering is given and three improved discrete reaching law is developed
其次，詳細分析了離散指數趨近律抖振產生的原因，給出兩種改進方案，並與其它方法進行了比較。Digital simulations reveal many valuable characteristics of the power system low frequency oscillation. the limit of conventional analysis and the appearance of new technique such as wams together with the advance of the nonlinear theory, require a new method for oscillation research of power grid, which can combine small and large disturbances analysis effectively
論文指出，由於傳統小信號穩定分析方法的局限性，及動態監測設備和非線性理論等新技術與理論的迅速發展，有必要研究新的振蕩分析方法，以更加有效地揭示互聯系統小擾動、大擾動后的振蕩機理，並研究相應的控制策略。Dwi reveals the accurate site of lesion earlier than traditional images, which indicates a better correlation between symptoms and etiology of stroke, and considerable improvement in patient care
在診斷急性多發性腦梗塞時，擴散磁振造影能盡早指出正確的病灶位置，故有助於判斷病因，並修正治療方法。An automated de - noising algorithm based on the energy of wavelet packet not donoho ' s threshold algorithm is established. a gear feature vibration signal extraction method using the wavelet packet energy is proposed, which can separate gear meshing vibration, noise vibration and gear fault vibration signal from the original gearbox case vibration signal. basis pursuit ( bp ) algorithm is introduced into the filed of mechanical signal de - noising and feature extraction for the first time
第三章擺脫了donoho的閾值消噪思想，從能量的角度建立了基於小波包的自動消噪演算法；提出基於小波包能量分佈的齒輪故障特徵信號提取方法，可以將齒輪嚙合振動信號、干擾振動信號以及故障沖擊振動信號從原始齒輪振動信號中分離出來；首次將基追蹤消噪演算法引入到機械故障信號的消噪與特徵提取上，通過對齒輪故障信號的消噪，表明了它的有效性，並對影響該方法實際應用效果的因素進行了全面的分析，同時也指出了該方法存在的局限性。According to the guidline, two nd : yag lasers have been designed and set up, one is end - pumped by lower output power ld using a selfoc micro lens, and the other is end - pumped by high output power ld using a pair of lenses are designed, and the characteristics such as output power and power stabilization of both solid - state lasers are investigated. thirdly, when an empty liquid crystal cell is inserted in the cavity of the nd : yag laser pumped by high power ld, the laser can operates in single axial mode. finally, according to the relationship between the laser output power and the longnitudinal a ld - end - pumped nd : yag laser sensor for displacement measurement has been investigated theoretically and demonstrated experimently, the results indicate that when the mean radius of pumping inside the laser cavity is far less than that of the oscilating laser mode, the exponential of the output power is a gauss function of the longitudinal positon of focused spot of ld pumping beam, both the measurement range and the sensitivity are dependent on the incident pumping power, as the incident pumping power is increased, the measurement range is enlarged and the sensitivity is improve d
本文首先介紹了ld泵浦nd ： yag激光器的發展狀況、主要特性及其應用，從四能級速率方程出發，推導了ld泵浦nd ： yag激光器的閾值、輸出功率和斜效率的表達式，並簡述了激光器的工作原理、結構型式和倍頻方法；其次，以空間相關的速率方程為基礎，提出了ld端面泵浦nd ： yag激光器的設計方法，給出了一定泵浦耦合方式下，振蕩光模尺寸、最佳輸出耦合率、泵浦光模尺寸、泵浦光焦斑位置等參數的選取依據，以此為依據，設計了自聚焦透鏡耦合小功率ld泵浦nd ： yag激光器和透鏡組耦合高功率ld泵浦nd ： yag激光器，對激光器的輸出功率和功率穩定性等特性進行了實驗研究；再次，在帶尾纖輸出的高功率ld泵浦nd ： yag激光腔內插入一隻空液晶盒，觀察到了激光器以單縱模運轉；最後，根據泵浦光焦斑端面位置對激光輸出功率的影響規律，提出了ld端面泵浦nd ： yag激光位移傳感新方法，並進行了理論和實驗研究，研究結果表明：當激光晶體內泵浦光平均光斑半徑遠小於振西安理工大學碩士學位論文蕩光束腰半徑時，激光輸出功率的自然指數與泵浦光焦斑的縱向位置成高斯變化規律，測量范圍和靈敏度依賴于泵浦功率，隨著泵浦功率的增加，測量范圍擴大，靈敏度提高，當端面泵浦功率為7 . 24w （最大輸出功率為1 . 926w ）時，激光位移傳感器的測量范圍和靈敏度分別是13 . 045mm和0 . 148mw / pm 。This paper investigates the pressure sensitivity of an interferometric fiber - optic hydrophone element with a concentric mandrel including an enhanced sensitivity layer based on the theory of elastic mechanics and finite element method ( fem ) and then investigates its harmonic frequency and vertical directional property using fem, and verifies all the results derived from theoretic analysis at last
本文分別基於彈性力學的理論和有限元的方法對含彈性增敏層的同軸干涉型光纖水聽器基元的聲壓靈敏度進行研究，並基於有限元的方法對其諧振頻率和垂直指向性進行分析，最後用實驗對各項分析結果進行了驗證。Man b & w 10l90mc diesel engine is a new type of man diesel company and it has been used in large container vessel. in order to investigate into the characteristic of shaft torsional vibration when any single cylinder flames out and how that affects the main power propulsion system of a ship, the author puts forward a new way of calculation concerning the shaft torsional vibration when the mean indicated pressure of other cylinders remain unchanged
在此基礎上，開發了新的船舶軸系扭轉計算軟體，並以manb & w公司近幾年新推出的一種大功率多缸柴油機manb & w10l90mc型柴油機為例，分別進行了額定功率下和單缸熄火下的扭轉計算，並提出單缸熄火時其他缸平均指示壓力保持不變的軸系扭振計算方法。In order to make the sensitivity of 2 - demension accelerometer along the two main arbors almost identical, symmetric four - beam structure that embeds a double - sides interdigitated differential capacitive with puckered beam in two directions was used as sensitive component. in addition, the differential capacitive accelerometer fabricated by bulky silicon micromechanical technique has high sensitivity, wide measurement scope, less nonlinear error, and simple converting circuit. then, the structure parameters of the sensitive component were calculated and stimulated, which results in a set of the optimized structure design parameters, main fabrication procedure and several key fabrication technology
為使二維振動傳感器在兩主軸方向的靈敏度大致相同，敏感元件採用高度對稱的四梁結構，其中每個軸向上均採用帶折疊梁的雙側叉指電容結構，採用體硅微機械工藝製作的高深寬比叉指電容式敏感元件，具有高靈敏度、寬量程、非線性誤差小、外圍電路簡單等優點;對設計的敏感元件結構參數進行了計算，並利用有限元法進行了模擬分析，根據模擬結果得出了優化參數;在確定敏感結構的基礎上，研究了敏感元件採用體硅微機械加工工藝製作的工藝流程和關鍵工藝技術;對敏感晶元內部的c - v介面電路進行了原理設計與分析，利用差動測量技術得到由振動引起的微小電容變化量，經c - v介面電路進行相位調制處理，然後通過解調輸出與加速度成正比的電壓信號。Under windows nt and labview development environment, using the linear fit module, exponential fit module > general polynomial fit module of labview to design a method for fitting the experiment data, the results of curve fitting indicate that the purpose of general polynomial fitting is better than the rest. separating the equivalent input impedance of magnetostrictive transducers without stimulate current from input impedance of it with stimulate loop based on the results of curve fitting, and determining the syntony frequency and electric simulation network parameters of magnetostrictive transducers by this input impedance. finally, with labview network functions, realizing magnetostrictive transducer electric simulation system based on web server and discussing a scheme for this system network by datasocket. the method of this paper can more accurately determine the syntony frequency and electric simulation network parameters of magnetostrictive transducers than the testing method of syntony & anti - syntony. at the same time, discussing virtual instrument measurement system and how to realize magnetostrictive transducer electric simulation network system by labview network functions of network virtual instrument measurement development environment
在windowsnt系統環境和labview虛擬儀器技術開發平臺下，首次利用labview中的直線擬合模塊、指數擬合模塊以及多項式擬合模塊，設計了一種對實驗所得數據進行曲線擬合的方法，對三種擬合方法進行了比較，曲線擬合結果表明，多項式擬合方法相對于其它兩種擬合方法效果更好；根據曲線擬合的結果可從帶激勵線圈的磁致伸縮換能器的輸入阻抗中分離出磁致伸縮換能器鐵芯在無激勵電流時機械振動形成的等效輸入阻抗，並由此輸入阻抗確定了磁致伸縮換能器的諧振頻率及其電氣模擬網路參數；最後通過labview提供的網路功能，實現了基於web服務器的磁致伸縮換能器電氣模擬虛擬儀器測試系統，並探討了通過datasocket技術實現該系統網路化的方案。Taking natural frequency and mode as damage principle, damage detection is studied as optimal problem based on genetic algorithm, and damage indices, symmetry and precision in the damage detection is discussed. numerical simulation of the damage detection of offshore platforms using genetic algorithm proves the feasibility of genetic algorithm in damage detection of large structure ; program all the process of genetic algorithm in damage detection into damage detection system
以實測的固有頻率和振型為診斷依據，將損傷診斷問題歸結為優化問題，採用遺傳演算法加以研究，以10單元固端梁的損傷診斷為基礎，討論了診斷中出現的損傷指標，損傷對稱性和變量精度等問題；將遺傳演算法的損傷診斷應用於海洋平臺，驗證了遺傳演算法用於大型結構損傷診斷的可能性；並用matlab將遺傳演算法應用於損傷診斷的全過程編製成損傷診斷系統。( 2 ). according to the system indices and requirements together with the technology characteristic, it researches the capture possibility of apt capturing system. then it introduces the common scan methods, such as raster, spiral, raster spiral, rose and lissajo. ( 3 ). it makes a detailed simulation analysis of the raster and spiral scan, analyze the connection between capture probability, capture time, system index at different capture resolution angle, capture range, vibration angle extent and terminal location distributing mean square deviation
其中對幾個關鍵部分進行了詳細分析:計算了目標角反射器的激光雷達散射截面（ lrcs ）值，研究了qd與ccd對目標位置角度的計算方法和空間解析度; （ 2 ）根據系統指標和要求並結合現有國內技術特點研究了apt捕獲系統掃描的捕獲概率問題，然後分析了幾種常見的掃描方式:矩形（ raster ）掃描、螺旋（ spiral ）掃描，矩形螺旋（ rasterspiral ）掃描，玫瑰形（ rose ）掃描以及李薩如形（ lissajo ）掃描; （ 3 ）對分行掃描和螺旋掃描進行了詳細的模擬分析，分析了它們在不同捕獲分辨角、捕獲范圍、振動角振幅和終端位置分佈均方差時的捕獲概率、捕獲時間與系統常數之間的關系。The basic principle, main properties, typical parameters, technical characteristics and general situation of klystron are introduced. the electron beam prebunching in the modulated cavity and shift tube of relativistic klystron amplifer ( rka ) is studied analytically, a self - consistent equation of radiation generated by the prebunched electron beam in the radiation cavity is derived using the field method of particle ? wave interaction instead of the electrical circuit method, and in terms of it, the gain in the linear regime calculated, a field analysis method is proposed. the theory analysis shows that the characteristic parameters, such as resonance frequency, real part of gap - impedance, external quality fadtor in all kinds of klystron output circuits including single - beam, multi - beam, single - gap, multi - gap, single - beammulti - gap, multi - beam multi - gap klystron output circuit, can be calculated by the field analysis method
本文系統的介紹了速調管的工作原理、主要特點、發展概況、主要性能指標和技術特點，解析的研究了電子束在相對論速調管放大器的調制腔和漂移管中的預群聚;用粒子波互作用的場方法導出了在輻射腔中預群聚電子束產生輻射的自洽方程，同時對線性區的增益進行了計算。理論分析表明，場分析法可用於計算單注單間隙、多注多間隙、單注多間隙和多注多間隙速調管輸出迴路的諧振頻率、間隙阻抗實部和外觀品質因數等特性參數。To avoid high frequency oscillation in the course of autopilot design, damping coefficient value was treated as a constraint, the rise time was taken as objective, and the other performance criteria were taken as constraints, then the robustness design problem was solved by multi - objective optimization method
摘要在導彈控制系統設計過程中，考慮了自動駕駛儀的高頻振蕩問題，將其轉化為系統的一個約束條件，同時把上升時間轉化為目標函數，其他設計指標視為約束條件，採用有約束多目標優化的方法解決了系統魯棒性設計問題。The prospect of development of wind induced vibration theory and vibration reduction technique concerning cables is made with the proposal that the focus of future research may be the vibration reduction method of assistant cable, the method of mtmd, intelligent cable and the theory of optimized vibration control, which should have a promising future
最後對斜拉索風振與減振研究的發展趨勢進行了展望，指出了輔助索減振法、 mtmd減振法、智能拉索、振動優化控制理論將是未來該領域研究重點，有著明顯的應用前景。Simultatly, based on the vaviaction of seismic signal - noise ratio, the anthor use the funtion singular method in the seismic data procesy and put forward the wavelet amplitude singular exponentid method and the wavelet power spectrum singular exponential for the fractued density detection
與此同時，將函數奇異性分析的思想引到地震信號處理中來，針對地震信號信噪比的高低，提出小波振幅奇異性指數法和小波功率譜奇異性指數法的裂縫密度檢測方法。Also, in our software, we have made the practical seismic data processing by the prediction of fractured amizuth and the fractured density, then evaluated the exactitude of the predictions by the evaluation of the assessment parauceter, and at last confirm one optimum detection methods of fractured amizuth, the wavelet difference scale filter method, and two the optimmer fractured density detection method, the wavelet amplititude singular exponential method and the wavelet power spectrum singular exponeatial method
並用自編軟體，將三種裂縫方位預測和三種裂縫密度預測用於實際地震資料處理，並用評價參數檢驗評估其正確性，最終在現有的方法中確定了最優裂縫方位檢測方法?小波變尺度濾波法和最優裂縫密度檢測法?小波振幅奇異性指數法和小波功率譜奇異性指數法。The characteristics of the intrinsic frequency distribution of the framed steam turbine - generator set foundation are summarized ; it can been seen that the base plate of the framed foundation does not have much effect on the dynamic response of the foundation, and that the " amplitude method " is better than the " resonance method " among dynamic analysis methods. when designing a framed foundation, as long as the load - bearing capacity and stability is ensured, a flexible pillar is better, the amplitude of vibration can be controlled through adjusting the particle quality in foundation design
論文最後總結了框架式汽輪發電機組基礎固有頻率的分佈特點；指出框架式基礎底板本身對基礎的動力響應影響不大，認為動力分析方法中振幅法優于共振法；並指出框架式基礎設計時，在滿足承載力和穩定性的前提下，柱子應以柔為佳；設計中可以通過調整質點的質量來達到控制基礎振幅的目的。分享友人