振動負載 的英文怎麼說

中文拼音 [zhèndòngfùzǎi]
振動負載 英文
oscillatory load
  • 振 : 動詞1. （搖動; 揮動） shake; flap; wield 2. （奮起） brace up; rise with force and spirit
  • 負 : Ⅰ名詞1 （負擔） burden; load 2 （虧損） loss 3 （失敗） defeat Ⅱ動詞1 [書面語] （背） carry on th...
  • 載 : 載Ⅰ名詞（年） year : 一年半載 six to twelve months; six months to a year; 三年五載 three to five ...
  • 振動 : vibrate; vibration; vibrance; vibrancy; vibra; vibes; shaking; rumble; jitter; chatter; sway; jar...
  • 負載 : [電學] load
  1. Opamps will often oscillate when driving capacitive loads

    放大器驅動容性負載時經常振蕩。
  2. 1 m 0. 5, the phase - shifted angle 6 is controlled in term of sine law which makes the magnitude of resonant voltage track a reference sine voltage, and the resonant voltage is rectified, filtered, inverted and then the better sine - voltage output is obtained, theoretical analysis and experimental results show that for the resistive load and inductive load, the switches of leading leg of the phase - shift - controlled circuit are always turned on at zvs, and ones of lagging leg are turned on at zvs ( < 0 ) or turned off at zcs ( ( > 0 ), moreover, all switches in the low - frequency inverter are always turned on and off at zvs, the measured circuit efficiency for rated load reaches up to 88 %

    從功率單向流動角度出發，提出了一種lcc諧振型恆頻移相單相高頻鏈逆變電路拓撲，在調制系數0 . 1 m 0 . 5情況下，控制移相角按正弦規律變化，使諧振電壓脈沖列的幅值追蹤參考正弦電壓信號，經過整流、濾波、低頻逆變，從而獲得正弦度較好的輸出電壓。理論分析和實驗結果證明對于阻性負載或阻感性負載，移相全橋具有超前橋臂零電壓開通，滯后橋臂或者零電壓開通（ _ 0 ）或者零電流關斷（ _ 0 ）的軟開關特性，而低頻逆變器的各個開關均實現零電壓條件下的開通與關斷。
  3. In chapter 3, the subgrid eddy - viscosity model for large eddy simulation is applied to calculate the three dimensions unsteady periodic turbulent flow in yantan francis turbine. the pulsating characteristics of some main physical parameters in flow field are found. the calculated axial water thrust of hydraulic turbine agrees with the model - test value

    第三章採用大渦模擬亞格子渦粘模型，對巖灘混流式水輪機的流場進行三維非定常湍流分析，得到了流場中各物理量的脈動特性，計算出ms的軸向水推力與模型試驗值大小相當；同時論證了對于下機架承重的混流式水輪發電機組可採用其推力軸承負荷作為水電站廠房振動的最大垂直激振荷載。
  4. Study on natural vibration of cable bearing weight with asymptotic method

    採用漸近法研究負載鋼絲繩的固有振動
  5. As the experiment results show, multiple reasons led to the offset of oscillating frequency, including diode ’ s nonlinear characteristic, fluctuation of electrical source voltage, traction of load impedance, change of environmental temperature and humidity and the design of circuit

    實驗結果表明多種因素引起了振蕩頻率的偏移，包括二極體的非線性、電源電壓的波動、負載的牽引、環境溫度濕度變化以及電路板設計方面的因素等。
  6. There are five parts are as follows : in part one, the concept of switching function is introduced first to establish the nonlinear mathematical model of the induction motor variable frequency speed adjustment system which is fed by a sine pulse width modulated ( spwm ) inverter and takes the effect of the main magnetic circuit saturation into consideration, then the low frequency oscillation of the system is simulated according to the model. next, from the view point of energy conversion of the inverter - induction system, a criterion for the low frequency oscillation is proposed to determine whether the system is in low frequency oscillation which is judged by whether the interval of the negative current component of the inverter input current is more than 1 / fc ( fc is the carrier wave frequency of the inverter ) or not

    首先引入開關函數概念，建立了正弦脈寬調制（ spwm ）逆變器供電異步電動機，考慮主磁路飽和時的變頻調速系統整體數學模型，模擬系統的低頻振蕩；其次從逆變器-異步電動機系統能量轉換角度出發，提出通過檢測逆變器輸入電流中負電流的間隔時間是否大於1 / f _ c （ f _ c為逆變器載波頻率）來判定系統是否出現低頻振蕩；最後的實驗結果驗證了系統低頻振蕩建模和判據的實用性和正確性。
  7. Study of relationship of gearbox vibration and outer - load

    齒輪箱振動信號與外部負載的關系研究
  8. Firstly, under the assumption that the output driving torque generated by the stepper motor of the mirror is constant, such influence analysis is conducted. secondly, a mathematic model of the stepper motor is given. under the assumtion that the input impulse frequence is constant, the rotational motion of the stepper motor of the mirror with the mutual exertions of damping torque, friction torque and disturbance torque generated by satellite platform ' s attitude motion is simulated and analyzed

    對衛星平臺姿態振動對紅外相機掃描機構轉動的影響進行了系統深入的模擬分析:首先在步進電機驅動力矩一定條件下，模擬分析了星體姿態運動干擾力矩對紅外相機掃描鏡轉動的影響;接著建立了步進電機的數學模型，在步進電機輸入脈沖頻率一定條件下，模擬分析了步進電機在阻尼力矩、干摩擦力矩、平臺干擾力矩等負載轉矩的共同作用下的轉動情況。
  9. Through teat of relative vibration, center - line and center orbit of the shaft during starting - up and carrying load process, the abrasion mechanism, radial disturbance, loading status, and self - centering capability etc. of the the failured bearing have been analysed, and measures for preventing damage of bearing shoes being put forward

    摘要通過對機組起動及帶負荷過程中軸的相對振動、軸中心線、軸心軌跡的測試，對失效軸承的磨損機理、徑向擾動、承載狀況和軸承自調心能力等進行分析，提出了預防軸瓦損傷的措施。
  10. The controlled object hyvp ( hydraulic pressure vibration platform ) has the property of big loading pressure and rating power, so it need considerable transmitted and control power, it also has the property of high - level math model, and narrow frequency width in closed - loop, and bad stability. this thesis is based on the hpvs in the “ tiema project ”

    被控對象（液壓振動臺）具有負載壓力和額定功率相當大的特點，因此要求傳輸和控制的功率要相當可觀;而且它還具有數學模型階數高、閉環頻帶寬度窄、穩定性差等特點。
  11. By studying the vibration signal characteristics in periodic loading machine system, vibration signal model including state equation and observed equation was constructed

    通過研究周期性負載機械繫統振動信號的特點，構造了包括狀態方程和觀測方程的振動信號模型。
  12. Mechanical vibration and shock - hand - arm vibration - method for measuring the vibration transmissibility of resilient materials when loaded by the hand - arm system

    機械振動與沖擊手臂振動手臂系統為負載時彈性材料振動傳遞率的測量方法
  13. The mechanical impedance analyzing method utilized, the mathematical formula for the input impedance and transformer ratio of ultrasonic horn are built up, some vibration performance of ultrasonic horns are discussed under different load impedance, the relationship and applicational conditions between the transformer ratio of ultrasonic horn and the radiational impedance are analyzed

    採用機械阻抗分析方法，建立了超聲變幅器的輸入阻抗和變幅比的數學表達式，討論了不同負載阻抗下超聲變幅器的振動性能，分析了超聲變幅器的變幅比與換能器輻射阻抗之間的關系及應用條件。
  14. G. lefeuve - mesgouez, d. le houedec, a. t. peplow, “ ground vibrations in the vicinity of a high - speed moving harmonic strip load ”, journal of sound and vibration, 231 ( 2000 ), 1289 - 1309

    魏全， 「高速鐵路受移動負載時對地表振動影響之研究」 ，國立中正大學機械工程學研究所碩士論文， 2000年6月。
  15. Through the test of the separating sieve ' s and beams vibration acceleration, the dynamic bending moment, torque and shearing force as well as the analyze of each parameter by dividing rotation speed range from 300 r / min to 600 r / min of the main shaft, the change regularity of the vibration of the separating sieve, the vibration and the dynamic load on dangerous cross section with the change of rotation speed of the main shaft is obtained. research shows that there exits apparent relevance between the vibration as well as the dynamic load of the main beam and the vibration of the separating sieve. the vibration of the separating sieve mainly affects the composition of low frequency of the vibratio n of the main beam, appropriately amending the vibration acceleration of the separating sieve, the loading and vibration of the mam beam can be directly improved

    通過分檔測試主軸轉速在300 600r min范圍內分離篩與梁的振動加速度、梁所承受的動態彎矩、扭矩和剪力以及各參量的時頻域分析，得到了主軸轉速與分離篩振動、主梁的振動及其危險截面的動態載荷間的變化規律，研究表明梁的振動和其所承受的動載與分離篩的振動之間具有明顯的相關性，分離篩的振動主要影響梁振動的低頻成分，適度改善分離篩的振動加速度，可直接改善梁的負載和振動特性。
  16. In chapter 3, according to the requirements of high voltage power supply used for charging capacitors with constant current, the series resonant converter ( src ) was chosen as the main circuit frame. the dynamic process of src was discussed by using mathematical analyses and numeric simulation to study the operational characteristics, the effects of parameters of resonant circuit on them and the relationship between switching frequency and out put power, which provided the bases of designing the power supply

    第三章中根據高壓電容恆流充電電源的運行特點，選擇了串聯負載諧振變換器作為主電路結構形式，並對其動態過程進行了數學分析及數值模擬，討論了該電路的運行特點、諧振迴路參數對運行特性的影響以及開關工作頻率與功率輸出的關系，為電源的設計提供了依據。
  17. The traditional static location area scheme used in the location updating procedure of mobile communications has many problems, such as lack of flexibility, ms oscillating between la borders, focused signaling load on border cells, etc. in this paper we present a new adaptive location updating scheme, which can solve the above problems, and can change easily to other la schemes. the scheme uses multi - level las, selected according to single ms s mobility and call characteristics, to make the best tradeoff between wireless signaling cost of location updating and paging

    在移動通信的位置更新過程中，傳統的靜態位置區方案存在著缺乏變化的靈活性、邊界振蕩、信令負載過于集中問題，本文提出了一種新的自適應位置更新方案，採用不同級別的位置區，位置區的選擇根據移動臺當時的移動和呼叫情況，按照使位置更新和尋呼的無線信令總代價最小的原則確定.該方案可有效地解決靜態位置區的各種問題，並能方便地與其它位置區方案切換
  18. The mathematical model of working process is built, and the theoretical analysis is accomplished, too. from the viewpoint of energy building and transform, another new method, named as additional resonant starting way, is presented. the principle of working and the structure of the circuit are described in detail

    通過分析負載變化對串並聯逆變器啟動的影響，在預充初始能量研究的基礎上，從能量補償和能量轉換的觀點，提出了兩種新的啟動方法：負載充磁啟動方法和附加振蕩啟動方法。
  19. To the applications following the model, the self - driven performance optimizing, load adjusting, and vibration restraining can be archived in mobile network environment

    基於這種模型開發的分佈對象應用可以有效地在移動網路環境中進行性能自主優化、負載調? ?配，並抑制由於網路變化可能造成的振蕩。
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