有效值噪聲 的英文怎麼說

中文拼音 [yǒuxiàozhízàoshēng]
有效值噪聲 英文
root-mean-square noise
  • 有 : 有副詞[書面語] （表示整數之外再加零數）: 30 有 5 thirty-five; 10 有 5年 fifteen years
  • 效 : Ⅰ名詞（效果; 功用） effect; efficiency; result Ⅱ動詞1 （仿效） imitate; follow the example of 2 ...
  • 噪 : 動詞1. （蟲或鳥叫） chirp 2. （大聲叫嚷） make noise; make an uproar; clamour
  • 有效 : effective; valid; efficacious
  1. This paper adopts an adaptive learning algorithm based on hierarchy clustering to update user profile, which continuously abstract the cancroids of one class of optimum information from the feedback flow of system, which effectively shield the learning process from plenty of feedback noises produced by distorted threshold and sparseness of initial information, which also can imitate artificial feedback approximately to perfect the intelligence of adaptive learning mechanism

    摘要本文採用一種基於層次聚類的自適應學習策略，從系統反饋的信息流中，動態提取一類最優信息的質心更新用戶模型，有效屏蔽了閾值失真和初始信息稀疏造成的大量反饋噪聲，並且能夠近似模仿人工反饋，完善自適應學習機制的智能性。
  2. Partial wavelet coefficients ca n ' t be set zero when the threshold is undersize so parts of noises are retained and some useful signals will be taked off when the threshold is iusto major so parts of useful signals are lost. these cases result in dissatisfactory denoising

    如果閾值選取過小，那麼有一部分的噪聲小波系數將不能被置零，從而在去噪后的信號中保留了部分噪聲信息，使去噪的效果變差。
  3. The features of metal screw gear is reducing noise and libration. what is noticeable is : the equivalent plastic straight gear may effectively reduce the noise and libration

    金屬螺旋輪通常特點是能降低噪聲和振動值得注意的是，等效的塑料直輪可以更有效地降低噪聲和振動。
  4. Different algorithms were compared in the numerical simulation and model experiment of concrete velocity inversion the results showed that, compared with the least - square solutions and the damped least - square solutions, the damped and natural weighted least - square solutions reflected the inner defections of the tested object more reliably and exactly due to the usage of correct priori information, which benefited the suppression of noises and made the iterations of inverse stable and convergent

    結果表明，相對于最小二乘法和阻尼最小二乘法，基於自然權的加權阻尼最小二乘演算法，由於利用了正確的先驗信息，不但使反演過程收斂，而且具有數值穩定、抗噪能力強的優點，其成像結果能真實有效地反映對象內部缺陷，因此更適用於混凝土的超聲波速度反演。
  5. Two nonlinear simulation methods are designed by curve fitting method and anfis which seem simply and right in the simulation experiment. based on the model different control strategies also were realized in detail such as chopped current control ( ccc ), angular position control ( apc ), amplitude - change ccc and pi control. a simple torque sharing function ( tsf ) method and a tsf controller were designed which decreases torque ripple effectively

    文章中還建立一種基於模糊神經網路的非線性模型，並對比分析了三種方法，模擬中確定了電機的最優開通關斷角，在此基礎上實現了電流斬波控制、角度位置控制、變幅值電流斬波控制以及分段雙閉環pi控制，模擬結果表明，它實現了電機的正常運行，很好的抑止了電機轉矩脈動，同時有效地降低了噪聲。
  6. With linear time - invariant modeling of phase noise and definition of “ effective resistor ”, we analyze the critical parameters of the circuit and calculate the value of phase noise at the 1 / f ~ 2 region

    引入「有效電阻」的概念對電路的各項關鍵參數在線性時不變模型下進行理論分析和推導，得到相位噪聲在1f2區域的理論值。
  7. The one - dimension effective fpk equation of colored noise serves as our starting point to evaluate the effect of noise color on communication system design. the theory of ber versus input snr per bit is developed and a new procedure to determine the system parameters that influence the minimum ber is proposed. it is shown that the communication system ' s performance is related to the turnable system parameters as well as the noise correlation time

    在指數相關高期色噪聲情況下，本文以一維有效色噪聲fpk方程作為研究的出發點，理論分析了限帶高斯色噪聲通道中脈沖幅值調制數字信號傳輸的誤碼性能，給出了非線性接收器的接收性能曲線，充分體現了噪聲相關時間的影響。
  8. It is proved by measuring noise of fan room of jcfk, that there are pretty good agreements between estimation and experiments. then, this model is applied for the practical engineering of noise control in fan room. the ways to connection qualitative with quantitative, analysis in theory with policy decision in practice are successfully used and the optimal scheme of noise control is achieved. moreover, the effect of the optimal scheme is estimated. this paper makes considerable headway about not only the research range and content but also the theoretical basis and research method. it has the important practical value

    把模型運用於復烤廠風機房噪聲污染治理的實際，採用定性分析與定量分析，理論計算與經驗決策相結合的方法，對風機房車間噪聲控制，隔聲間噪聲控制和傳播途徑噪聲控制三方面系統研究，制定風機房噪聲控制優化方案，並編程預測治理效果。這不僅將噪聲污染監測，評價治理，預測的研究有機地結合起來，拓展了研究范圍和內容，而且研究方法有所創新，對當前工業噪聲優化控制有較強的推廣和應用價值。
  9. Experimental result shows the algorithm has nearly the same edge preserving performance as nonlinear multiwavelet transform, and nearly the same speckle noise suppression performance as filtering

    此演算法對原圖像進行多小波變換，然後在不同尺度，不同方向進行自適應閾值處理，模擬結果表明：本演算法能夠有效地抑制了斑點噪聲，又保留有用信號及邊緣信息。
  10. So how to select threshold effectively to avoid lose useful signal is problem worth to research. some research is processed here on the problems above as follow : ( 1 ). in exordium the research purpose and means is introduced

    因此，在去噪的過程中如何更有效地進行閾值選取，使得噪聲被去除的同時盡可能的避免有用信號的丟失，也是一個值得研究的問題。
  11. Hydraulic pound, vibrate, noise and cavitation are the main difficult problems in water hydraulic valves, and finite element numerical analysis is proved to be an effective computational method, so numerical simulation and visualizing research on the flow field in water hydraulic valves by applying finite volume method is very important

    水壓閥中的液壓沖擊、振動、噪聲以及水壓閥中的氣蝕是研製水壓閥存在的主要難題，而有限體積數值計算方法又被證實是一種可行而有效的流場計演算法，因此應用有限體積法對水壓閥閥道內流場進行數值模擬和可視化研究，是非常有意義，也是非常重要的。
  12. Chapter 4 : the influence of different phase - shifting angle of reference wave in recording, of the phase - shifting error and of the quantization error on the quality of the reconstructed image is investigated respectively in two - step phase - shifting inline digital holography. and an effective method of eliminating the phase - shifting error is presented, in which the summation of the intensity bit errors of the reconstructed image is taken as an evaluation function for an iterative algorithm to find the exact phase - shifting value. the feasibility of this method is demonstrated by computer simulation

    通過數值分析不同相移角的選取對再現像的強度誤差的影響，發現再現像強度誤差依賴于記錄時相移角的選取，當相移角在一定范圍內，其再現像的強度誤差相對較小；提出了一種有效消除相移誤差的新方法，並將其應用於二步同軸相移數字全息，對此進行了計算機模擬，得到了很好的結果，證明該方法對于相移誤差的消除是很有效的；對量化誤差所作的數值模擬發現，當信號被量化成8比特（ bit ） ，即256個灰度級以上，量化噪聲的影響相對較小。
  13. Circuit experiments consisting of two measuring units and computer analysis prove the method is effective, and circuit experiments consisting of n measuring units show noise reduction will be better as n increases

    兩個混沌測量電路的耦合實驗和計算機數值計算驗證了這種方法是有效的，又進一步討論了由n個單元電路構成的耦合實驗，可得到隨著n的增加它抑制噪聲的能力也增強。
  14. On one hand, from the technique of constrained least squares and limited energy of additive noise, an effective restored approach by adopting regularization method to overcoming ill - posed problem, solving an equation with a single variable, and using space iterative algorithm is proposed ; on the other hand, aiming at the restoration of blurred image, another effective restoration approach based on least - square algorithm is also proposed in this paper. this method firstly adopts increment iterative algorithm to improve convergence and meanwhile applies regularization technique to overcome ill - posed problem. in the computations, the regularized parameter has its adaptive character, which can be determined in terms of the restored image at each iteration step therefore automatically correct to the appropriate value

    一是從約束最小二乘出發，在加性噪聲能量有界的前提下，採用正則化方法來克服病態問題，通過解一個單變量方程，並利用空域迭代運算實現了一種有效的圖像復原;二是針對模糊圖像的復原問題，從最小二乘演算法出發，採用增量迭代的方法改善演算法的收斂性，同時結合正則化技術克服問題的病態性質，並引入自適應的正則化參數，使其與圖像復原的迭代運算同步進行並自動修正到最優值。
  15. Secondly, ground on the duct noise control, the delayed - lms algorithm, which is actulized easily, is brought forward, then the simulation on pc is achieved. it is shown from the computer simulation that for the single frequency noise, there will be a good effect when choosing the suitable parameters ; but for the narrowband noise, the effect will become worse with increasement of the bandwidth. this result is helpful to analyze the parameters influencing anc

    結果表明： （ 1 ）隨著濾波器長度的增大，系統收斂速度變快； （ 2 ）隨著值的增大，系統的收斂速度增大，但是當值超過某一范圍時會引起系統的發散； （ 3 ）次級通路的延遲數與初級噪聲頻率有關； （ 4 ）對于窄帶信號， dlms演算法可以取得一定的降噪量，但是隨著窄帶信號帶寬的增大，降噪效果明顯變差。
  16. Thirdly, data processing software is programmed with median method filter to decrease the noise, and the stability of indicating value is improved

    第三，編制了測量數據處理軟體，採用中值濾波方法對測量噪聲進行有效抑制，提高了監測實驗裝置的示值穩定性。
  17. The apsp produced abroad is made by numerical controlled machine tool, which has noise level of 71db ( a ), the apsp produced in our country is made in the method of exploratory which has noise level of 73db ( a ) and 75db ( a ). in order to analyze the influence of stator curve to noise, the author used tri - coordinate measuring instrument to measured exactly the inside surface of stator and got the straddling point coordinate, and made curve fitting by using matlab as language and studied the fitting effect and then worked out the equation of stator transition curve in return seeking, then comparied this method with the standard style and made the conclusion : the equation of atator transiting curve of apsp made by numerical controlled machine tool is close to theorical 5 power curve standard style, but compared with it, the stator transiting curve of apsp produced in exploratory has a major error. combining the testing results of noise, one can know that the qualily of stator transition curve play an importance to t he noise of the pump

    國外生產的汽車動力轉向泵是用數控機床加工的，其噪聲值為71db （ a ） ，國內生產的汽車動力轉向泵是用靠模方法加工的，其噪聲值分別為73db （ a ）和75db （ a ） ，為了分析定子曲線對泵的噪聲的影響，本人用三坐標測量儀對定子內表面進行精密測量，獲得定子內表面的離散點坐標，以matlab語言為工具對離散點進行曲線擬合，觀察擬合效果，然後，用回歸方法求出了定子過渡曲線的方程，並把該方程與理論方程標準型進行了比較，得出如下結論：用數控機床生產的汽車動力轉向泵的定子過渡曲線方程非常接近理論5次曲線標準型，而用靠模方法加工的汽車動力轉向泵的定子過渡曲線與理論5次曲線標準型相比較，則存在著較大的誤差，結合噪聲測試結果可知，定子過渡曲線的優劣，對泵的噪聲大小有著重要的影響。
  18. The synthetic aperture radar ( sar ) is one of important remote sensing radars used in many fields. sar image speckle reduction and compression is very important in enhancing the apprehension of sar image and in reducing the costs of data storage and transmission of sar image

    合成孔徑雷達作為一種重要的遙感成像雷達在很多領域有廣泛的應用，合成孔徑雷達圖像的相干斑噪聲抑制和壓縮演算法對于提高圖像的研究利用價值，以及數據的存儲和傳輸效率是非常重要的問題。
  19. Based on the difference of maximum modulus evolution between signals and random noises in multi - scale space of wt, the signals from shaking table test are processed for random noise reduction

    摘要本文利用小波變換下有效信號有隨機噪聲在多尺度空間中模極大值不同的傳播特性，對地震模擬振動臺試驗測試信號進行去噪處理，取得良好效果。
  20. The method of calculation atmosphere noise is discussed and the detailed root mean square numeric values of different time of summer are obtained

    在計算出不同頻率下地波場強的同時，重點介紹大氣無線電噪聲場強的計算方法，並給出相關海域上夏季不同時段內大氣噪聲場強的有效值。
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