滾轉振動 的英文怎麼說
中文拼音 [gǔnzhuǎnzhèndòng]
滾轉振動
英文
rolling oscillations-
Lastly, we change the unequal time distance wheel speed to equal time distance wheel speed. according to the model of torsional vibrations, we introduce the spectral estimation method to design tpms. when the tirepressure is leaking, the peakvalue of the periodogram of the wheel speed will move to the real axis
4 .利用核函數，提出了基於epanechnikov核函數的插值方法將採得的不等間隔的輪速信號轉換成等間隔的輪速信號。利用輪胎滾動方向的振動性質提出了譜估計法。At present we manufacture relaxing folding chairs, vibration massage chairs, spindle roller massage chair, chain roller massage chairs, large - sized air pressured roller massage chairs, large - sized multi - function dvd massage chairs, rotary roller chairs, pedicure spa chairs, portable mattress, beauty salon massage chairsk and so on. the function includes vibration, various tapping, kneading and rolling
目前生產製造的按摩椅從一般的折疊按摩休閑椅振動式按摩椅螺牙式滾輪按摩椅?條式滾輪按摩椅大型滾輪氣壓按摩椅大型多功能影音保健按摩椅轉盤滾輪式按摩椅指甲彩繪spa椅隨身攜帶型按摩墊按摩背心按摩型理容美發椅，種類非常繁多。The pate rubs pinches massages the head, revolves the massage through the pro and con two directions, the waist, the back is equipped with four turn walks the organization, two widths, two narrowly roll the massage wheel, can tightly paste your waist back about, does according to the lumbodorsal region curve walks the massage, depend the mat. the beginnings and ends are equipped with the remote infrared ray pad wave system, can cause the heat wave infrared thorough human body cell in - depth to nurse, the cushion thigh department is equipped with two thumps to strike to be possible to choose the rap, to inspire trembles, whips three massages techniques, the calf pad supposes one may modulate velocity the hoop organization
頸部揉捏按摩頭，通過正反二個方向的旋轉按摩，腰、背部設有四輪行走機構，兩寬、兩窄滾動的按摩輪，能緊貼您的腰背部，根據腰背曲線作上下行走按摩，靠墊兩端設有遠紅外線墊波系統，能使熱波紅外線深入人體細胞深層護理，坐墊大腿部設有兩捶擊頭可選擇敲擊、振顫、拍打三種按摩手法，小腿墊設一可調速滾輪機構。They then placed a polarizing filter over a ball - rolling beetle to turn its light through 90 ?
然後他們在一隻滾動球的甲蟲上放置一偏振片將光轉向90 ?角。To reduce the excessive vibration of a high - speed rotor system at the critical speed, a friction damper with a flexible support structure is introduced
摘要為了抑制高速滾動軸承轉子系統在通過臨界轉速時的過大振動，本文採用了摩擦阻尼彈性支承結構。The monitoring sites and the signal types of various common faults are illustrated for early diagnosis, including misalignment or off balance of the rotor, shaft bending, loosing of a part, fluid induced vibration and damages of rolling - bearing or gear, etc
闡述了振動測試點和測量信號類型的選擇方法，給出諸如轉子不平衡、軸彎曲變形、轉子不對中、部件松動、流體誘發振動及滾動軸承、齒輪損傷等常見故障的診斷方法。The main contents of this thesis include : ( 1 ) summarize and analysis of the theories on vibration transmission through rolling element bearings ( 2 ) based on the threshold setting and signal ’ s statistical approach, a method for solving the problems of denoise was developed ( 3 ) using sparsity and clustering, the method and hypotheses for underdetermined blind source separation was studied ( 4 ) the method based on potential function clustering was given for underdetermined blind source separation of noisy signals based on the assumption that the input distribution is sparse and the mixture procedure is linear, the attenuation matrix and the delay matrix were estimated by clustering. the approach was experimentally illustrated for the case of m = 2. the separation of the signals from bearing test bed proved that the given methods are available and reliable
在需求分析和研究現狀分析的基礎上，本論文針對如下內容進行了重點研究: （ 1 ）以滾動軸承為例，對旋轉機械振動信號的傳輸進行了歸納分析; （ 2 ）通過設定某一門限並研究信號間的統計特性，研究了旋轉機械振動信號的盲源分離過程中噪聲消減策略; （ 3 ）應用稀疏信號分析和聚類分析方法，對盲源分離中欠確定問題的假設條件進行探討並對分離方法進行了分析; （ 4 ）採用基於勢函數聚類分析的方法，研究了欠確定前提下含噪聲測量過程中信號盲源分離方法。On the basis of reference ( superscript [ 6 ] ), the influence of damping of shimmy damper, moment of inertia of wheel, tire cornering stiffness and strut tilt stiffness on parametric shimmy stability of aircraft wheel is investigated in the paper
摘要本文在文獻[ 6 ]的基礎上，首次研究了減擺器阻尼、機輪轉動慣量、輪胎偏滾剛度、支柱側傾剛度對飛機機輪參數擺振穩定性的影響。Based on these conditions, this thesis describes the methods for the blind source separation of noisy harmonic signals from rotating machine when the underlying system is underdetermined ( i. e. separation of n sources from m mixtures, when m < n )
本論文主要以「滾動軸承-轉子」系統為對象，研究存在噪聲情況下，當測試傳感器的數量少於信號源的數量（欠確定）時，旋轉機械振動信號的盲源分離問題。By processing real - time digital analog fault vibration signal and adopting minimum quadric multiplication and rectangle function, correct frequency chart will be gained. thus, the system design based on advanced dsp can be applied to the real - time fault diagnosis of rolling bearing in modern high - speed train
通過對採集的模擬的有故障振動信號進行在線實時數字信號處理，並在信號分析方面採用了最小二乘法及加窗函數，以獲得正確的頻譜，通過信號處理，並進行結果比對，進而可證明此系統在高速列車轉向架滾動軸承在線診斷中應用的可行性。Finally, the rolling test of proto - type is introduced. the test results show the every performance index of the bogie meets the dynamic evaluation standard in gb5599 - 85, which reach the predicting research target
本文最後介紹了出口巴基斯坦的貨車轉向架樣機的滾振試驗情況，結果表明，各項性能指標均滿足gb5599 ? 85中動力學評定標準，達到了預期的研製目標。A time - frequency analysis method is presented to solve paper machine press section bearing vibration signals of unstable and complication, applying wavelet function to the unstable signals for faulty bearing according to paper machine press section roll bearing characteristic, and process the vibration signals by means of decomposition and reconstruction, obtaining the vibration signals in different frequency bands, the statistic in frequency domain of relevant frequency bands is served as monitoring feature
摘要針對紙機壓榨部滾動軸承尺寸大響應弱、運轉速度低、低頻信號容易淹沒、調制源多、振動信號非平穩性等特點而導致常規的傅立葉分析診斷故障效果不佳的情況，提出了一種應用小波變換的時頻分析方法，對振動信號進行分解和重構處理，獲得了振動信號在不同的頻段的分量，提取相應特徵頻段重構分量的功率譜的頻域統計值作為特徵參數，從而實現對軸承故障診斷。分享友人