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噪声概念
相关语句
  noise concept
     A New Noise Removed Method Based on Noise Concept
     一种基于噪声概念的新的去噪方法
短句来源
  noise concepts
     Some important noise concepts are introduced (in especial the noise reducing percentage), they both have practical value.
     引入了几个重要的噪声概念(特别是噪声降低百分率),它们都有实用价值。
短句来源
  “噪声概念”译为未确定词的双语例句
     This dissertation briefly introduces the statistical characteristics of stable distribution and proposes a new spectral density different from power spectrum density of second order processes.
     本论文在简要介绍稳定分布统计特性的基础上,讨论了一种不同于二阶过程功率谱密度的共变谱密度概念,建立了一种基于自共变序列与共变谱密度的非高斯稳定分布白噪声的概念及其判断标准,对传统意义上的白噪声概念进行了广义化。
短句来源
     According to parameter model of stable distribution, we discuss a new frequency domain whitening method based on alpha spectrum.
     本论文还依据已有的多项式自回归(PAR)模型,讨论了非线性稳定分布有色噪声概念并建立其非线性PAR模型,提出了EIRLP算法对非线性稳定有色噪声的模型参数进行估计。
短句来源
     At the same time, we name a kind of new noise for the optical gyroscope, the dynamic revolving noise, for the first time.
     同时,根据本文的理论分析,分析提出了陀螺动态旋转噪声概念
短句来源
     The concept of elliptical white noise is first proposed in this paper.
     本文首次提出椭球白噪声概念
短句来源
     This paper briefly proposes a new different spectral density from power spectrum density of the second order processes,thus we can get a new concept of stable white noise based on covariation spectrum,and a method of whitening in nonlinear system under alpha-stable conditions.
     本文提出了一种稳定分布白噪声的概念及其判断标准,对传统意义上的白噪声进行了广义化,提出了一种非线性系统中稳定有色的噪声概念并建立其非线性PAR模型,提出EIRLP算法对多项式自回归稳定有色噪声的模型参数进行估计,并探讨了其白化方法.
短句来源
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  相似匹配句对
     Noise is a concept opposite to information .
     噪声是与信息相对的概念
短句来源
     Some Important Concepts in Practical Noise Theory
     实用噪声理论中的几个重要概念
短句来源
     First, the concept of .
     NET概念、.
短句来源
     On"Concept"
     “概念”刍议
短句来源
     and noise group (N. G.)
     和噪声组(N.G.)
短句来源
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The effects of instability in repetitive signals acquired from rotatingmachines, can be critical in the extraction of Periodic signatures by cepstrum analysis for diagnostic applications. In this Paper, the rePetit-ive signal is decomposed into two components, i. e. waveform an'd rePeti-tive Pulse series. The effects of instability are represented by the levels of magnitude modulation, phase modulation, wave deformation and background noise. Based on the theory of deconvolution, a discussion on Perio dic signature...

The effects of instability in repetitive signals acquired from rotatingmachines, can be critical in the extraction of Periodic signatures by cepstrum analysis for diagnostic applications. In this Paper, the rePetit-ive signal is decomposed into two components, i. e. waveform an'd rePeti-tive Pulse series. The effects of instability are represented by the levels of magnitude modulation, phase modulation, wave deformation and background noise. Based on the theory of deconvolution, a discussion on Perio dic signature analysis through cePstrum is Presented, which shows that Periodic signatures can be represented by the harmonics in cepstrum which only have relationship with the level of instability. This results can be very helpful for practical applications.

本文把旋转机械故障产生的周期性激励—周期性特征信号分解成“波形”与“特征脉冲序列”的卷积,提出了有关周期性特征信号幅值调制、相位调制、波形畸变以及背景噪声四种类型噪声的概念。在此基础上,应用解卷积理论,对实倒谱分析识别周期性特征信号问题进行了研究。并在计算机上讨论了各种类型噪声对实倒谱分析的影响。研究表明,周期性特征信号在实倒谱上将形成依次递减的倒谐频结构,其大小仅与特征信号本身的稳定性有关,与信号的大小、形状无关,且最大值不超过1。分析结论较好地解释了文献以及作者的应用实例。

According to the results of the cutting noise experiments, a new discovery is put forward. The discovery can be briefly stated as this: in the time domain, the cutting noise and the cutting vibration in the main cutting direction have very close relativity; in the frequency domain,they have very great similarity in frequency structure.Based on the new discovery,a concept about static cutting noise and dynamic cutting noise is Presented. With this concept, the Physical mechanism of the cutting noise can be explained...

According to the results of the cutting noise experiments, a new discovery is put forward. The discovery can be briefly stated as this: in the time domain, the cutting noise and the cutting vibration in the main cutting direction have very close relativity; in the frequency domain,they have very great similarity in frequency structure.Based on the new discovery,a concept about static cutting noise and dynamic cutting noise is Presented. With this concept, the Physical mechanism of the cutting noise can be explained and the relationship between the influence of the cutting vibration on the cutting noise and the influence of the dynamic behavior of a machine tool on the cutting noise can be studied. In this paper,the echoes are deleted from the cutting noise signals by means of cepstrum analysis. The Purpose of deleting the echoes is to analysize the frequency structure of the pure cutting noise. With the help of 2-D ARMAV model the generating noise system in which the cutting vibration is taken as its main input and the cutting noise as its output can be identified.The identification states the transmision relationship of the generating noise system and the cutting vibration. It also gives a satisfactory explanation to the source and the transmision of the main frequencies of the pure cutting noise.

根据切削噪声试验结果,提出在强烈切削振动情况下,切削噪声与刀具主切削力方向的振动在时域中具有极强的相关性,在频域中具有极大的频率结构相似性,并进而提出了稳态切削噪声与动态切削噪声的概念,解释了切削噪声发声的物理机理。本文还采用倒谱剔除观测切削噪声信号中的回声信号,以分析原始切削噪声的频率结构;并将切削振动作为主要输入、切削噪声作为输出,采用二维ARMAV模型辨识切削噪声发声系统,辨识结果描述了发声系统对切削振动的传输关系,并能较好地解释原始切削噪声的主要频率成分的来源与传输。

The concept of controlling electrical machinery libration and noises in the process of electrical machinery maintenance is first presented in the paper.It is of great lignificance contralling and decreasing the pollution of the enuiroment. Diocussions about the maintenance of electrical machmary noises-noises suppression of the electrical machinery bearing has been sat off on the basis. The model,the maintenance method and points for attention...

The concept of controlling electrical machinery libration and noises in the process of electrical machinery maintenance is first presented in the paper.It is of great lignificance contralling and decreasing the pollution of the enuiroment. Diocussions about the maintenance of electrical machmary noises-noises suppression of the electrical machinery bearing has been sat off on the basis. The model,the maintenance method and points for attention of vibration and noises controlling had been put forward in the process of general small and medium-siged electrical machmary maintenance.

本文第一次提出了电机维修过程中也应控制电机振动及噪声的概念。这对控制或减少环境的污染有一定实际意义。在此基础上,仅对电机机械噪声的主源——电机轴承噪声控制展开讨论。提出了模型,给出了一般中小型电机维修过程中控制轴承振动及噪声的安装方法和注意事项。

 
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