vibration band 中文意思是什麼

vibration band 解釋
振動帶
  • vibration : n. 1. 振動，顫動；擺動；【物理學】振動。2. （心的）震顫。3. （思想情緒的）激動。4. 猶豫。adj. -al
  • band : n 1 帶，繩；帶形物；箍；箍條；嵌條；鑲邊；鋸條； 〈pl 〉 （法官等的）寬領帶。2 束縛，羈絆；義務；...
  1. Basic environmental testing procedures. test methods. test fdc : random vibration wide band. reproductibility low

    基本環境試驗程序.試驗方法. fdc試驗.寬帶的隨機振動.可再現性低
  2. This paper studies transverse - torsion vibration of blade and formulates the equation of motion of band saw blades. the solution of this thesis can be the manufacture reference and the original theory base of research of tightening device dynamics analysis of band saw in the future

    本文對帶鋸條橫向扭轉振動進行了研究，驗證了帶鋸條橫向振動方程和扭轉振動方程，為進一步研究帶鋸機的動態特性奠定了初步的理論基礎。
  3. In light of the limitation of fast fourier transform ( fft ) for the method of traditional spectrum analysis to analyze the unsteady signal, wavelet and wavelet analysis are made for the typical unsteady process signal of starting up and shut down with the good characteristic of simultaneous localization in both the time and the frequency domains based on the field test on the vibration of two - row placed units in lijiaxia hydropower station, in which the signal is decomposed into different frequency band, and then the weak signal is caught and the dominant frequency is picked up for the analysis of the vibration source

    摘要基於李家峽水電站雙排機組振動的現場試驗研究，並且針對傳統頻譜分析方法傅立葉變換（ fft ）對于非平穩信號已力不從心這一缺陷，利用小波分析方法在時域和頻域上同時具有良好的局部化性質，通過對開停機這一典型非平穩過程信號進行小波及小波包分析，將其分解到不同頻帶內，獲取微弱信息和提取優勢頻率，並對其作振源分析，得出開停機初始時刻因水流不穩均出現強烈的振動現象，且低頻段信號能量最大，開停機過程水流脈動壓力和尾水渦帶擺動是引起定子基礎振動的主要原因。
  4. Bringing into play the communication market resources in hangzhou bay, the park devotes itself to the formation of a “ mobile valley ”, which means a unique zhejiang - flavored economic pattern : forming a complete telecommunication industry chain from software and operation development of key parts, such as ic chip, rf modules, base band, display, high capacity battery, to related components like cell phone housing, keypad, antenna, vibration motor, mould, pcb ( circuit board ), photoelectricity device, electronic device, connectors and system and software development, and operation service development

    園區依託杭州灣通信市場資源，致力打造「移動谷」 ，創造中國浙江經濟特有的專業版塊模式：從集成電路晶元、 rf組件、基帶、顯示器、高能電池等核心器件到接手機外殼和按鍵、天線、振動馬達、模具、 pcb （電路板） 、光電器件、電子器件、連接件等相關組件及系統和軟體開發、運營服務開發，形成完整的通信產業鏈。
  5. It mainly includes following aspects : in this paper, firstly implication of wavelet analysis in signal harmonic component extraction is presented in detail, and on this foundation signal given frequency band component extraction method is proposed. then we investigate frequency aliasing phenomenon, reason why frequency aliasing phenomenon is easy happened when wavelet is implied in field of motor fault diagnosis, and frequency bands where frequency aliasing phenomenon is easer happened, and put forward approved morlet wavelet analysis method which can effectively alleviates frequency aliasing phenomenon. third we set up vibration signal detected system, design experiments to obtain three groups of fault signals : eccentricity fault, mixed fault of eccentricity plus mild rub, mixed fault of eccentricity plus moderate rub, and process these data using analysis method proposed in this paper

    首先對論文的選題以及相關背景進行了探討，並對相關的小波基礎理論進行了闡述，主要針對感應電動機的偏心故障和偏心+碰摩復合故障形式及相關的應用演算法進行了詳細探討，主要工作內容包括下面幾個方面:在論文中，首先對小波分析在信號的諧波分量提取中的應用進行了研究，在此基礎上，提出了信號的特定頻帶成分的提取方法;研究了小波分析的頻域混疊現象，探討了小波分析應用於電機故障診斷領域時易發生頻域混疊現象的原因，以及混疊現象較易發生的頻帶，提出了可以有效減輕頻域混疊現象的改進的morlet小波分析方法;搭建了振動信號檢測系統，設計實驗採集得到三組故障數據:偏心故障，偏心+輕微碰摩復合故障，偏心+中度碰摩復合故障，並對這些數據應用本文提出的分析方法進行信號處理，提取出的特徵參數可有效區分這兩種故障形式;研究了基於matlab和labview的混合編程方法，完成了電機故障檢測系統的軟體開發。
  6. Mainly involving the vibration of the o - p - o linkages and c - o groups in ribosome, are closer and lower in aml samples than the corresponding ratios in cml samples. the amide band in aml is broader than that in cml. these differences indicate the different contributions of red cells in erythrocytic series in the erythropoietic development from proerythroblast to matured erythrocytes, and the results imply the maturation of red cells in bone marrow are related to the proliferation of leukemic cells. the noticeable differences may have important implications for analyzing and evaluating leukemia

    該結果提示aml和cml骨髓血紅細胞系中有核紅細胞的數量分佈不同，同時提示骨髓紅細胞的成熟可能與白血病細胞的增殖有關。骨髓血細胞的紅外光譜的差異性對白血病的分析和評價具有重要的意義。
  7. Broad band random vibration

    寬帶信號頻率隨機顫動
  8. In vibration test, the signal is always along with noise. if the noise belongs to white noise, fourier transform is very suit to identify and process it, after then remove it. but when there exists low energy impact signal, traditional band pass filter remove noise and the precise position of impact signal is blured

    對于白噪聲，由於它是穩定信號，所以也可以使用fourier變換定位，以便在合適的頻段進行提取。但是對于低能量突變瞬態信號，在信噪比比較低的情況下，由於帶通濾波的平滑作用，瞬態信號的位置信息也變得很模糊了。
  9. Then the resonance demodulation technique is used in analyzing the vibration signal of the gear and ball bearing. to some extent the results depend on the selected frequency band

    這一方法的實現步驟是首先對測得的振動信號進行自相關分析，再對自相關函數進行時延，然後對時延後的自相關函數進行hilbert變換解調。
  10. The lower - band spectrum caused by unbalancing rotor and eccentric error of primary axes is analysised firstly. the vibration of basic factors and its features caused by the basic member are discussed, such as turbo - propellers, planetary - reducer and bearings

    首先分析系統中由於主轉子動靜不平衡、主軸不對中而激發低頻諧波成分的現象，而後討論螺旋槳、行星減速器及軸承的振動故障機理以及整機振動綜合分析方法。
  11. Test results are analyzed in one third octave band spectrums mainly regarding vibration - sensitive instruments and emphasizing on low frequency band

    測試結果的分析主要是針對振動敏感儀器的，在頻域內採用1 / 3倍頻程頻譜，重點考慮低頻段的地面響應。
  12. Narrow - band random vibration

    窄帶隨機振動
  13. To improve productivity and cutting accuracy of wood and to modify characteristics of band saw, it is essential that we study vibration characteristics of band saw

    為了提高木材生產率和加工精度，改善帶鋸機的工作性能，降低生產成本，對帶鋸機的振動特性進行研究是十分必要的。
  14. Basic environmental testing procedures. test methods. test fdb : random vibration wide band. reproducibility medium

    基本環境試驗程序.試驗方法. fdb試驗.寬帶的隨機振動.可再現性中等
  15. Optics and optical instruments - environmental test methods - combined digitally controlled broad - band random vibration and dry heat or cold

    光學和光學儀器.環境試驗方法.混合式數控寬帶隨機振動和乾熱或乾冷
  16. Optics and optical instruments - environmental test methods - part 15 : combined digitally controlled broad - band random vibration and dry heat or cold iso 9022 - 15 : 1998

    光學和光學儀器.環境試驗方法.第15部分:組合的數字控
  17. Vibration of automobile in low frequency band has importment effect on automobile performance and the air spring has high performance in this frequency band, the semi - suspension with controllable spring stiffeness can be used widely to improve the vehicle ' s ride comfort

    由於車輛行駛的平順性關注的是低頻振動，而空氣彈簧本身在低頻處具有良好的減振性能，所以利用空氣彈簧組成的變剛度半主動懸架系統具有很好的應用前景。
  18. Traditional control method over body vibration - passive control only can be adapted to single frequency of vibration, which can not meet the requirement of broad frequency band of body vibration. on the other hand, active control over body vibration can adjust certain parameter of control system to get adapted to the change of i. c. engine body vibration, so it is able to reach better control effect

    傳統的整機振動控制方法被動控制只能適用於單一頻率的振動，無法滿足整機寬頻帶振動的要求；而主動控制則可以通過外界能量主動改變控制系統的某些參數來適應內燃機整機振動的變化，因此能達到更好的減振效果。
  19. According to the present situation and developing trends on condition monitoring and fault diagnosing of hydroelectric sets at home and abroad, and taking the technique of data fusion diagnosis hydroelectric sets as theme, this dissertation researches into data fusion fault diagnosis method based on dempster - shafer theory, and applies this technique to hydroelectric sets vibration fault diagnoses for the first time, and presents that using sub - band energy of vibration frequency to reflect the vibration intensity of hydroelectric sets

    本文根據國內外關於水電機組狀態監測與故障診斷研究的現狀與發展趨勢，以機組振動故障的信息融合診斷技術為研究主題，對基於dempster - shafer證據理論的信息融合故障診斷方法進行研究，首次將該方法應用到水電機組振動故障診斷中，並提出了用機組振動各頻率的子帶能量反映其振動強度的方法。
  20. Using this system the faults of engine rotor will be finded out by surveillance vibration wave in time domain and power spectrum real - timing or analysis the fringe band of tooth - frequency of planetary - reducer

    在wj6發動機生產試車臺上，實現了通過實時給出機匣振動時域、頻譜波形，分析及辨識發動機主轉子系統故障。
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