激動頻率 的英文怎麼說
中文拼音 [jīdòngbīnlǜ]
激動頻率
英文
excitation frequency-
Finally, the paper studied the dynamic characteristics of 2. 6x13m mill system. mill system of single - pinion drives is lighten, so the design and run of mill system, bestir frequency must avoid inhesion
邊緣傳動磨機系統是一個模態偶合較緊的系統，因此，在磨機系統的設計、運行中，應注意使激勵頻率避開系統的固有頻率，以免發生設備的早期失效。Its principle is : a laminated structure ( beam or plate ) with delamination consists of undelaminated region and delaminted region which can be divided to upper and lower parts. when a low - amplitude and high - frequency excitation has the frequency close to some part ' s natural frequency, this part will resonate and certain amount of mechanical energy will convert to heat so that the delaminated region ' s temperature exceeds greatly that of the undelaminated region. therefore the delamination can be located by means of infrared thermograph
其原理是具有脫層的層合材料構件（梁或板）包含脫層區域及未脫層區域，脫層區域分為上下兩部分，若對層合材料構件施加小振幅、高頻率的振動激勵，當激勵頻率恰好接近其中一部分的固有頻率時，該部分就會產生共振響應，部分機械能將轉化為熱能，使脫層區域的溫度遠高於未脫層區域，藉助紅外熱像儀即可顯示出脫層的位置。Principal conclusions were drawn as the following : the non compatibility of pressure or velocity of the gas on both sides of the contact surface is the cause of the formation of shock wave ; the heating effect of reflective shock wave to driving gas during charging or exhausting process is the internal mechanism of peak oscillating effect, and all the factors that influence the formation and the running of the shock wave will influence the peak oscillating frequency, cooling effect
主要結論如下：熱分離機內激波形成的原因是射氣瞬間接觸面兩側壓力和速度不相容；峰值振蕩效應的內在機制為反射激波對充氣階段的驅動氣或低溫排氣的加熱，凡是影響激波形成及運動的因素都將對峰值振蕩頻率、冷效應及熱效應產生影響；當充、排氣時間比為0 . 1763時，最佳射流激勵頻率出現在高階峰值振蕩頻率上。Through studying the working mechanism of the composing, the paper referred the bearing ' s analyzing model and designing flow. through shearing test of high damping rubber, the paper analyzes the influence of shearing shape, shearing strain range and inspiriting frequence on the characteristic parameters ( dynamic shear elastic module, dissipation engineering module, wasted gene ). according to the rule of equivalent energy, the paper gets the hysteretic curve of hdr ' s equivalent bilinear model and parameters ' calculating formula
本論文通過對這種分離式減震支座各組成部分工作機理的研究，提出了該分離式減震支座整體的計算分析方法和設計流程；通過高阻尼橡膠剪切試驗，分析了高阻尼橡膠剪切面形狀、剪應變幅值、激勵頻率和試件高度對特徵參數（動態剪切彈性模量、耗能模量、損耗因子）的影響。So the pipe system sends out noise because of resonance. especially the frequency 250hz of pulsating water is in close proximity to natural frequency of pipe, so the 250hz is a dangerous frequency to the pipe system. there is another reason why the noise is reached to 110db ( a ) in pump room that the noise is magnified by the cistern because of the resonance of cistern
特別是激勵頻率為250hz的頻率分量恰好與管道系統的固有頻率相接近，其引起的管道振動對噪聲的貢獻最突出，同時也與水泵房房腔的固有頻率相接近，從而引起房腔共鳴發聲，使噪聲進一步被放大，以至於噪聲最大處高達105db （ a ） 。The performance of vibration and movement of seedlings is validated in the whole vibration plate simulation. an orthogonal experiment is designed for analyzing the effect that the four parameters ( f, co, a, k ) act on horizontal and vertical velocity of seedlings
首先驗證虛擬模型的振動性能與物理原型基本相符，進一步採用正交試驗，考察四個因子（激振頻率山、激振力幅值f 、彈簧剛度k及彈簧傾角）對缽苗推送速度的影響。Finally finding that there are two reasons that cause vibration of pipe and noise. the one is the vibration of pump which transfers to pipe and stimulates the vibration of pipe. the second is the stimulating frequency of pulsating water is coherent with the natural frequency of pipe
最後得出管道的振動主要是由於兩個原因，一是泵的機械振動傳遞給管道，引起管道的振動；二是由於水流的脈動激勵頻率與系統的固有頻率相吻合，引起管道的共振發聲。Based on the results of previous researchers, the following instigations have been carried out in this paper : ( 1 ) employing a reasonable local resonance model which can accurately embody the heat - generation behavior due to resonance and vibration - heat mode in delaminated region, the dynamic response and temperature distribution in the small delamination region of a laminated beam are formulated. influence of the excitation frequency on the temperature gradient formation is analyzed numerically, and several meaningful conclusions are drawn. ( 2 ) for laminated plates with delaminations, due to complexity of the analytical solution, the finite element method is employed to analyze their temperature distributions and satisfactory results are also obtained
本文在前人研究的基礎上，對此方法進行了進一步的探討，主要做了以下的工作： （ 1 ）選取合理的、能夠準確反映由共振而產生熱量的行為的局部響應模型，以及合理的振動熱模式，推導了一維層合梁小脫層區域的振動響應及梁的溫度分佈，並編製程序計算了該層合梁在激勵一段時間后的溫度分佈趨勢，分析了激勵頻率對溫度梯度形成的影響，得到了一些有意義的結論； （ 2 ）對於二維層合板，由於解析解的形式異常復雜，本文採用有限元計算軟體對其溫度分佈進行了分析，也得到了較為滿意的結果。A refining process has taken place in the body, a lifting of the rate of vibration ; these centers now disseminate their energies and hormones to the entire body
在體內發生了一種精煉的過程，一種振動頻率的提高；這時，這些中心將它們的能量和激素發送至全身。The interleaving two - transistor forward converter succeeds to the advantages of the two - transistor forward converter, it has two units working alternately, the power loss of the converter is distributed and the output voltage ripple frequency is twice of the switching frequency
交錯並聯結構式的雙管正激變換器，繼承了雙管正激變換器的優點，兩個並聯單元互補工作，分擔了功率損耗，等效占空比擴大了一倍，輸出電壓的脈動頻率變為功率管開關頻率的兩倍。Because of the clamping capacitor and the interleaved structure, it has some good features compared with other flyback converters, such as : the topology is simple and can be realized easily ; the voltage spike of the power switch is availably restrained and without leakage - inductance energy loss ; the ripple of the input and output current is reduced, correspondingly, the volume and weight of the output and input filter is also significantly reduced
由於箝位電容的加入，相對于其他類型的反激式變換器電路，該拓撲具有一些獨特的優點:電路結構簡單且易於實現;無需另加輔助開關管，實現了開關管的有源箝位，抑制了開關管的電壓尖峰;提高了輸入、輸出電流的脈動頻率，減小了輸入及輸出濾波器體積。Base on review of existed study and application in suppressing cable vibration in the world, technique of mitigating cable vibration with viscous damper and mr damper has been investigated in this dissertation, and the main contents and progresses in form of summary are as following : 1 the motion differential equations of the cable - damper system are formatted, which take into account these factors, such as the inclined angle, sag, stiffness etc. coupling motion between cable and deck is studied with analytical and numerical method. numerical results show that large amplitude vibration of cable with beat rhythm will occur when exciting frequency of deck equals two times modal frequency of cable
本文在對國內外斜拉索振動控制研究與應用現狀進行綜合評述、分析的基礎上，針對上述問題進行了深入研究，具體的研究內容和取得的成果包括： 1 、建立了斜拉索-阻尼器系統運動方程，對拉索與橋面的耦合振動作了分析和研究，數值結果顯示當橋面激振頻率等於某階拉索模態頻率的兩倍時，很小的初始擾動將引起拉索的大幅振動，並呈現拍振的特徵，與實測的拍振信號一致。This paper begins with the calculation of the stator ' s resonance frequency, deals with the design and manufacture of motor, and puts forward dual nut structure of traveling wave revolving ultrasonic motor, and presents the analysis of the contract between rotor and stator in the manufacturing process, relation between the amplitude of voltage - ceremic chip and drive sources. the conclusion is that amplitude is affected by deviation of resonance frequency
同時分析了電動機的加工工藝，對超聲波電動機製造過程中功率與接觸角和振幅與驅動電源的關系進行了討論，得到了接觸角與輸出功率的關系曲線，以及超聲波電動機的振幅主要受電壓和激振頻率偏離定子環第2n階諧振頻率的偏離量確定。The frequence and modal of main stream piping were analysed under the condition of different velocity of stream and the valve taken as the centralizing mass. this paper also gives the responses of steady state under the condition that the frequency of forced vibration is 4hz 、 8hz 、 12hz respectively
將閥門作為集中質量處理，分析計算不同蒸汽流速下，某汽輪機主蒸汽管道系統的振動頻率和振型，並給出了激振力頻率分別為4hz 、 8hz 、 12hz時該管道系統的穩態響應。Second, numerical simulation and qualitative analysis has been done for the synthetic jet flow field in different cases ( different phase, amplitude and frequency ), and gained many conclusions which are helpful for designing the synthetic jet actuator
二、對不同驅動頻率，振動膜速度幅值以及激勵器的結構對合成射流的影響分別進行數值計算和定性分析，得到了大量有助於合成射流激勵器設計的結論。We apply fuzzy control theory to active control over engine body vibration, design fuzzy control system which combines intelligent control with feedback control. this control strategy mends the flaw of complexity, nonlinear and uncertainty when we use traditional control method. by measuring rotate speed and vibration speed of i. c
在主動控制的基礎上，採用了模糊控制的演算法，設計了內燃機整機振動模糊控制器，改進了傳統控制方法在處理振動復雜性、非線性和不確定性等方面的缺陷，通過測量內燃機轉速和內燃機整機振動速度信號，動態地改變動力減振器的剛度，使減振器的固有頻率跟隨內燃機整機振動激勵頻率的變化，達到降低內燃機振動的目的。When the velocity is changed, in order to change the amount of seeding transplant, single - chip microcomputer adjusts the frequency of electromagnet
當行走速度發生改變時，單片機改變方波的頻率，經驅動電路改變電磁鐵的吸合頻率（激振頻率） ，以達到調節擺秧量的目的。The optimized combination of parameters is listed as followed : the amplitude of excitation force is 150 newton ; the frequency of excitation force is 38 hertz ; the inclination and stiffness of spring is 64 degree and 56 newton per millimeter
分析得出振動參數的最優組合方案為：激振力f取150n ，激振頻率山取38hz ，彈簧傾角及剛度k分別取64 、 56n mm 。In this paper, the theory for lateral vibration of pile foundation with consideration of shear deformation of pile is established, and the influence of the ratio of pile length to its diameter, the ratio of pile stiffness to soil stiffness and dimensionless frequency were studied systemically
本文建立了一整套考慮樁體剪切變形的樁基水平振動分析理論，並較系統地研究了樁的長徑比、樁土剛度比、激振頻率等因素對樁基水平動力響應的影響。5. based on the solutions developed herein, the main features of the interaction between visco - elastic layered soil and an integral pile or a multi - defective pile are systematically analyzed. the influence on the vibration properties caused by soil modulus, the degree of pile defects, and the length and location of the defects are discussed, and many important conclusions are drawn
5 、利用所得解，對成層土中完整樁、變截面、變模量樁的振動特性進行了較系統的分析，並重點討論了土層模量、樁身缺陷程度、埋身、缺陷段長度、激振頻率等對樁項復剛度、樁頂反射波曲線、導納曲線的影響，得到了許多重要結論。分享友人