measured noise 中文意思是什麼
measured noise
解釋
量測噪聲-
Initial growths of disturbances are measured by means of hot - wire anemometry. due to the detected signals with low signal to noise ratio, the coherence function is used to eliminate background noise during data reduction
在擾動增長的初始階段，信號的信噪比非常地低，根據相關譜分析方法，應用相干函數，將擾動信號有效地提取出來，測量了初始擾動的增長。 -
In order to satisfy the veracity and the robustness against time - variable noise of the aoct, a new square root kalman adaptive filter arithmetic with time - variable noise statistic is presented in this paper. in addition, the wavelet analysis is applied to inspect the singularity of the measured current, and an adaptive signal - noise decomposer for aoct is designed
為了滿足aoct自適應控制的準確性和時變噪聲魯棒性的要求，論文將kalman濾波理論引入到自適應濾波中，並應用矩陣理論提出了一種新的時變噪聲統計的平方根kalman自適應演算法。 -
For designing railway vehicle with lower noise, interior noise is measured in the cushioned berth sleeping car
為了設計低噪聲鐵道車輛，對我國既有線上的軟席臥車（空調）進行了車內噪聲測試。 -
Abstract : in the paper, based on the problem that strong reactive background noise can bring about a big measurement error when sound power is measured in a narrow room, such as power room in a diesel locomotive, it is analyzed theoretically that sound power is measured and carried out by using sound intensity probe hood, and sound power of diesel engine surface noise is measured in a power room
文摘:在狹小空間如內燃機車動力室的條件下，測量柴油機表面噪聲聲功率時，動力室內抗性背景聲很強引起較大的測量誤差，從理論上分析了採用聲強探頭罩進行聲功率測量的可行性，並進行了內燃機車柴油機表面噪聲的聲功率測量。 -
This paper studies the mechanism generated from flow - noise in seawater pipeline, introduces controlling method of flow - noise, analyzes sound field characteristics of flow - noise in seawater pipeline system and the merits and demerits of measuring the flow - noise methods in and out of the pipeline. in our experiment, a test measuring device of seawater muffler is used in a measuring chamberlet to verify that a method of reverberation chamberlet is difficult to exactly measure the low frequency flow - noise in pipeline. at the same time the insertion lose of water muffler in the low frequency was measured by the measuring chamberlet method
本文分析了海水管路系統內流噪聲的產生機理，介紹了流噪聲的控制方法；分析了海水管路系統中流噪聲的聲場特性以及流噪聲管內、管外測量方法的優缺點；通過海水消聲器試驗測量臺架，利用測量小室驗證了混響箱法難以準確測量海水管路系統中的低頻流噪聲；用測量小室對水消聲器在低頻段的插入損失進行了測量。 -
In chapter 5, the uh - 1 model rotor, the model rotor measured in the present work and the helicopter z - 8 rotor are taken as numerical examples, the calculations on rotor noise under different flight conditions are carried out for validation purposes
應用該模型，分別以uh - 1模型旋翼、本文試驗的模型旋翼以及z - 8直升機旋翼為算例，對不同飛行條件下的旋翼氣動噪聲進行了計算，驗證了本文的計算方法。 -
However, due to measurement, instrumental, computational, and even human errors, the measured process data always mix with noise ineluctably
然而，由於測量誤差、儀表精度、計算誤差甚至是人為因素，過程測量數據通常不可避免地存在噪聲。 -
Finally, the experiments on the rotor bvi noise are conducted both in an aeroacoustic laboratory and at outdoors, and the noise characteristics at different locations are measured on different blade - tip mach numbers, collective pitch angles and rotor configurations. based on the experimental results, some new conclusions are presented
本文第七章分別在「消聲室」和外場進行了模型旋翼的槳-渦干擾噪聲實驗，對不同馬赫數、不同槳距角以及不同旋翼布置情況下的不同測點進行了噪聲測量，得出了一些新的結論。 -
Measurement of environment noise and data measured
環境噪聲測試方法及測試數據 -
The expected noise level calculated by this model confroms to the measured noise level. and we carried out noise annoyance investigation by sending out larges of questionnaires in different noise sensitive regions such as residential quarters and schools in order to know the effects of combined overhead road noise on subjective annoyance. by aulyztng the relationship of the annoyance effective factors ( noise effective factors and non - noise effective factors ) and noise annoyace, the mainly effective factors were maken out
同時針對不同的敏感區域，進行了大量地高架復合道路噪聲主觀煩惱度調查研究，通過對噪聲因子及非噪聲因子與主觀煩惱度的相關關系分析，確定影響高架交通噪聲主觀煩惱的主要的非噪聲因子，並建立了噪聲煩惱度的預測模型，得出了不同敏感區域的高架交通噪聲的煩惱度閾值。 -
Crosstalk profile ? using the measured near - end loop noise psd, an estimate can be made of the type and number of crosstalkers present. again, this is a multi - variate optimization problem
串擾概圖使用已測的近端環路噪聲psd ，就可以估計當前串擾的類型和數量。這也是一個多變量的最優化問題。 -
Biology, etc. owing to many merits has not yet been used to measure parameters of gratings. the paper researches on the subject in view of current lack of it. the main tasks of the paper include : analyzing ellipsometric characteristics of gratings in detail with vector diffraction theory and ellipsometrics ; devising a reflective quarter wave plate at normal incidence according to some ellipsometric characteristics ; making use of normal simplex algorithm during ellipsometric inversion of gratings parameters, inversing ellipsometric parameters with gaussian noise of different standard deviations to simulate actually measured values with examples of isotropic metallic and anisotropic step gratings and testing that ellipsometry about gratings parameters is feasible with the range of certain precision ; discussing choice of incidence angle at length
本論文的主要工作包括：結合光柵的矢量衍射理論和薄膜的橢偏理論，詳細分析了光柵的橢偏特性；並且根據一些橢偏特性設計出一款正入射反射型單波長1 4波片；在光柵參數的橢偏反演中，引入正單純形法作為反演演算法，分別以各向同性的正弦形金屬光柵和各向異性的階梯型光柵為例，在標準橢偏值的基礎上加入不同偏差的高斯噪聲來模擬實際的橢偏測量值進行反演，在一定精度范圍內得出滿意的光柵參數，說明光柵參數的橢偏測量是可行的；還就入射角的選取問題進行了一定的探討。 -
In this paper, optic gyro is viewed as the object of investigation and several aspects is investigated as follows. two important indexes - bias instability and scale factor were measured and investigated, including bias, its repetitiveness, temperature sensitivity, random walk coefficient and scale factor, its nonlinearity, asymmetry, repetitiveness. we make use of the allan variance method to separate the noise factors which affect the performance of the optic gyro, such as the angle random walk, bias instability, rate random walk, rate ramp, quantization noise, markov noise and sinusoidal noise
本文以光學陀螺為研究對象，開展了以下幾方面的研究工作：本文對光學陀螺性能的兩個重要指標?標度因數和零偏穩定性進行了較為詳細的研究，其中包括陀螺的零偏b _ 0 、零偏重復性b _ r 、零偏溫度靈敏度b _ t 、隨機遊走系數rwc和標度因數k 、標度因數的非線性k _ n 、標度因數不對稱性k _ h 、標度因數重復性k _ r等等。 -
3 wheel rail rolling noise, which under 1000hz is caused by the rail s arched flange and above 1000 hz by wheel axle resonance, comprises the major part of the measured spectrum
（ 3 ）輪軌振滾噪音為噪音頻譜之最大值，其中1000hz以下為軌道下凸緣之拱形共振所引起， 1000hz以上為輪面之軸向共振所引起。 -
In chapter five to reconst ruct the three - dimensional object cubes, various deconvolution algorithms : nearest neighbor, inverse filtering and constrained iterative deconvolution are developed and applied to both computer generated and experimentally measured image cubes. the best results are obtained using an svd inverse fourier deconvolution algorithm with regularization for noise suppression
第五章為了重建三維目標立方，發展了各種去卷積演算法：最近鄰、逆濾波和帶約束的迭代去卷積，並應用到計算機產生和試驗測量的圖像立方中，最好的結果是利用具有規則抑制噪聲的svd逆傅立葉變換去卷積演算法獲得的。 -
Noise tapers off from the service module through the russian fgb module to the u. s. lab module at the other end, where levels have been measured between 55 and 62 db
從俄國的勤務艙，穿過俄國的fgb太空站機組艙，到美國的實驗室艙，噪聲級逐段減低，而實驗室艙里測到的噪聲級是介於55 ~ 62分貝之間。 -
There are errors during the measurement for both methods. the wavelet is introduced to de - noise the measured coordinates due to its sensitivity to the white noise on different scales. more precise coordinates of the cabin could be got after de - noise by wavelet
西安電子科技大學博士論文3 .由於立體視覺和激光全站儀測量得到的坐標均有誤差，採用小波去噪技術降低測量誤差，可更精確地確定饋源艙的位置及運行軌跡。 -
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。 -
In the experiment, we measured the frequency of the exhausted noise, and studied the muffler influence with the different rate of expansion
通過試驗測量了s195柴油機的排氣噪聲頻譜，並且對採用不同膨脹比消聲器的消聲效果進行了試驗研究。 -
The result showed that the maximum likelihood algorithm possesses higher stability and suitability on the random measured noise
結果表明極大似然演算法對隨機測量噪聲具有更高的穩定性和適應性。
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