共振頻率計 的英文怎麼說
中文拼音 [gòngzhènbīnlǜjì]
共振頻率計
英文
tuned circuit type frequency meter- 共 : 共動詞[書面語]1. (圍繞) surround2. (兩手合圍) span with the hand
- 振 : 動詞1. (搖動; 揮動) shake; flap; wield 2. (奮起) brace up; rise with force and spirit
- 頻 : Ⅰ形容詞(次數多) frequent Ⅱ副詞(屢次) frequently; repeatedly Ⅲ名詞1 [物理學] (物體每秒鐘振動...
- 率 : 率名詞(比值) rate; ratio; proportion
- 計 : Ⅰ動詞1 (計算) count; compute; calculate; number 2 (設想; 打算) plan; plot Ⅱ名詞1 (測量或計算...
- 頻率 : frequency; rate
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Tuned circuit type frequency meter
共振頻率計Precise thickness - shear resonance frequency of electroded piezoelectric crystal plates and its applications in resonator design
帶電極壓電晶體板厚剪共振頻率的精確確定及其在諧振器設計中的應用Some conclusions are drawn : 1 ) effect of inertial force from superstructures on the lateral seismic response of single pile can not be ignored ; 2 ) the lateral seismic response of single pile induced by far - field earthquake are mainly affected by acceleration mass of superstructure > site eigenperiod. it increases with the increment of accele ration and mass of superstructure. as the site characteristic frequency approaches the self - oscillation frequency of the pile, sympathetic vibration occurs and the value of lateral seismic response reaches maximum ; 3 ) as the stiffness ratio of pile to soil increase, the relative displacement of pile to soil increases ; 4 ) the lateral seismic response of fixed - head pile is much smaller than that of free - head pile
將其解析解與具體的的抗震設防烈度和場地特徵周期結合起來,計算分析了成層地基中單樁的橫向地震響應,得到了以下結論: 1 )上部結構慣性力對樁的橫向地震響應的影響不可忽略; 2 )成層地基中的單樁的橫向地震響應主要受地震基本加速度、場地特徵周期、上部結構質量的影響,隨地震基本加速度、上部結構質量的增大而增大;場地特徵頻率越接近樁基自振頻率,樁基地震響應越大,等於自振頻率時,由於發生共振現象,樁基響應幅值最大; 3 )樁土剛度比越大,樁土之間的相對位移的幅值越大; 4 )樁頂固接的連接方式,可以有效地降低地震時單樁的橫向地震響應。With dynamical modal analysis of electron gun by use of ansys software, we can get the inherent frequency and vibration model, which can avoid sympa - thetic vibration
利用ansys軟體對電子槍進行動力學模態分析可以得到電子槍的固有頻率和振型,從而在結構設計上避免共振。Methods for calibration of vibration and shock pick - ups - resonance frequency testing of undamped accelerometers on a steel block
安裝在鋼塊上的無阻尼加速度計共振頻率測試Calibration of vibration and shock pick - ups - method of test for resonance frequency of undamped accelerometers on a steel block
振動和沖擊傳感器的校準.鋼鑄錠無阻尼加速度計共振頻率的試驗方法Methods for calibration of vibration and shock pick - ups. resonance frequency testing of undamped accelerometers on a steel block
振動與沖擊傳感器的校準方法安裝在鋼塊上的無阻尼加速度計共振頻率測試In chapter four, using the quantum statistics method we study the cohesion of a metallic nanowire irradiated under electromagnetic wave based on the results in chapter three. we obtain that the cohesion force is effected notably only when the frequency of electromagnetic field is at the vicinity of the energy span of the lateral levels of the nanowire
第四章以第三章的工作為基礎,用量子統計的方法,分析了太赫茲電磁波部分輻照對金屬納米線內聚力的影響,得到了只有當外場頻率與橫向模式共振時內聚力才有顯著變化的結論。The numerical results indicate that the deformation within the solid inner core is very small. however, in the fluid outer core, the changes of the displacement with relatively low spherical harmonic degree ( n < 10 ) is very complicated via the radius, due to the resonance near the eigenfrequenies of the core long - period oscillations. while the spherical harmonic degree of the loading is larger than 10, the deformation and the gravitational perturbation in the core are very small, and the earth ' s deformation response is dominantly represented as the radial displacement in the elastic mantle
研究了地球在日月引潮力和表面負荷作用下的形變特徵,數值計算結果表明,在固體內核中的形變很小,由於在長周期核模本徵頻率附近的共振,液核中低階( n 10 )位移隨半徑的變化非常復雜,當負荷階數超過10時,地核中的形變和擾動位都很小,地球的響應主要表現為彈性地幔中的徑向位移,且隨深度增加急劇減弱,地表負荷love數與信號頻率的依賴關系很弱,給出了體潮love數計算的一種有效的近似處理方案。The input impedance of the interdigital saw transducer is measured by the equivalent circuit method. the experimental results show that the synchronized frequency of 9. 586 mhz, the acoustic radiation resistance of 44. 6 and the static electrode capacity of 194pf all agree with those design values
用自行設計的等效電路測量方案,測量了表面彈性波馬達換能器的輸入阻抗,實驗結果顯示表面彈性波換能器的共振頻率為9 . 586mhz ,輻射聲電阻為44 . 6 ,叉指電極靜電容為194pf 。Electron gun is the foremost parts of twt, it can produce electron beam with a certain shape and current, in order to guarantee the reliability and security of work, it ’ s design have to meet to the requirement not only of electric parameter, but also all kinds of subsidiary characteristics such as filament pyrogenation efficiency, warm up time, shape size, pole space capacitance and the ability to be able to bear the press and all kinds of rigorous run conditions such as high temperature, high humidity, low air pressure, strong vibration and great strike
由於行波管的大功率和高頻率等特性,目前還沒有任何其他的器件可以代替。行波管是應用高頻電磁場與電子注進行互作用的機理進行工作的,而電子槍是行波管中產生電子注並使它成型的基本部件,電子槍的結構設計決定了槍體自身必須具有良好的抗振可靠性,否則結構發生共振或振動位移過量,就會導致行波管的失效。因此對行波管電子槍的研究具有非常重要的意義。Firstly, the strain gauge method was used to measure the time difference of stress wave passing through two gauges adhered on the surface of test piece and also their main frequencies secondly, a 3 - component dynamometer was used to measure the resonant frequency of timber six kinds of full size timber were used for test
本研究旨在研發兩種新的應力波計測技術,其一為利用應變規來測定兩標點間之應力波傳遞時間差及試材之共振頻率,藉以計算試材之音速及動彈性系數,其二為利用三向動力計來測定試材之共振頻率。Based on the unified recursive formula, the four algorithms included in this study are the central difference method, the newrnark ' s method, z - transform method, and duhamel ' s step integral method. the accuracy, the phase and other existent problem are studied in this paper. it is proved in this paper that the recursive parameters b1and b2are relate to the poles of theoretical transfer function
分析中可以發現,中心差分方法, newmark中點加速度方法、 z變換方法及duhamel逐步積分法在精度范圍內其計算相位是沒有畸變的,中國地震局工程力學研究所頃土學位論文一但是中心差分方法, newmark中點加速度方法隨著采樣間隔及系統自振頻率的增大,系統的固有自振周期被改變,其傳遞函數的共振區域與理論傳遞函數的共振區域會發生分離。At this time, the approximate mechanical model of devices has been put forward, which frequency is 70 mhz, then we analyzed the euler ? bernoulli equation, find that the frequency is determined by the resonator ’ s density thickness and length ; the free - free - beam 、 coupled beam 、 support beam 、 transducer have been designed ; the model was simulated and modal analyzed on the coventorware and were consistent with the designed parameter. the silicon surface microfabrication process was developed and emphatically introduced several key surface microfabrication technologies, and was simulated by coventorware
本文通過分析歐拉-貝努立方程,得出濾波器的共振頻率主要由諧振梁的密度、厚度和長度決定,考慮切變形和轉動慣量的情況下,完成微機械諧振梁、支撐梁、驅動電容的設計;在coventorware軟體上進行模擬,分析結果與理論設計比較好地吻合;對微機械濾波器的加工工藝進行設計,給出器件的完整的工藝流程,重點介紹微機械表面加工工藝,並在coventorware上進行模擬。The directivity coefficient of the phased array antenna has been generalized and discussed. according to the formulations of microstrip antenna design theory, planar and cylindrical microstrip patch cell has been analyzed. we can conclude that the cylindrical microstrip patch cell has the performance of high gain, low thickness, high resonant frequency, uniform directivity diagram, and easy fabrication on missile body, so it is a good choice
本文根據微帶天線設計理論,分析了平面和柱面兩種微帶貼片單元,其中柱面微帶貼片單元增益高、厚度小、諧振頻率高、方向圖均勻,且較易加工製作在彈體上,適合在相控陣天線中做共形輻射單元。These phenomena are roots of the unsteady excitation. ansys was used to solve the structure dynamic equations to obtain the natural frequency of vibration and mode shape of the blade
本文應用工程軟體ansys完成了葉片的振型和自振頻率分析,結合數值計算得出的氣動激擾,進行了葉片的共振分析。In order to carry out the acoustic and aerodynamics performances tests, seven resonators are designed and made, and a specialized engine intake silencer and exhaust silencers test bench was designed. the tests and analysis are performed as well. on the basis of the intake noise spectrum of sc7080a, a three - parallel - connected resonant silencer is designed, and that has efficiently controlled the acceleration noise of sc7080a
在此基礎上設計並加工了兩類七個共振型進氣消聲器,研製了發動機進排氣消聲器性能測試實驗臺,開發了發動機進排氣消聲器聲學性能測試軟體,並在該實驗臺上測試了所設計的進氣消聲器靜態工況下的傳聲損失,從實驗的角度研究了共振腔的尺寸、形狀對其共振頻率的影響及其趨勢。The research and the application shows that the resonator geometrical parameter has effect on its resonant frequency, and the one dimension ( 1 - d ) model can predict the frequency accurately. therefore, if an engine intake noise spectrum is known, one can design a helmholtz resonant silencer to control the intake noise
一維軸向傳播理論能夠準確預測共振腔的共振頻率,從而為正確設計出針對發動機進氣噪聲頻率特性的helmholtz共振型進氣消聲器提供依據,達到有效控制發動機進氣噪聲的目的。The measuring instrument for blade resonant frequency mainly consists of a front end circuit, a signal collecting circuit, and a coiilputing and displaying circuit. this paper provides a detailed hardware diagran, software flow chart and design process, expounds the operation and calibration of the instrument, and analyses the measuring data in detail according to different conditions
葉片共振頻率測試儀主要由前置電路,信號採集電路及運算和顯示電路組成,文中給出了詳細的硬體電路圖、軟體流程圖及設計過程,闡述了該儀器的使用和校驗方法,並針對不同的狀況對測量數據進行詳細的分析。After the nonlinear and absorption effect is taken into account in the applications where high power ultrasonic is involved, the first and second harmonic components of the sound field of stepped circular plate is analyzed, based on the kzk equation and quasi - linear condition
考慮到大功率超聲應用中的非線性和吸收作用,本文從kzk方程和準線性條件出發,對于工作在共振頻率下的這種階梯圓盤,推導了它的一階和二階諧波聲場計算方法。分享友人