噪声分析

• Practical modeling of circuits , in accordance to chip ' s range of operation , utilizes classical signal and noise analysis to explain and predict circuits ' performance and behaviors
  针对芯片的应用范围，建立实用的数学模型，应用经典信号和噪声分析方法解释和预测电路的性能和现象。
• On the basis of the hardware of the detect system which uses ~ ( 252 ) c _ f - source - driven neutron noise analysis method , i designed the emulation platform of the apsd estimate , as an important part of the whole detect system
  在~ ( 252 ) c _ f源驱动噪声分析法的测试系统硬件平台基础上,本文首先设计和实现了功率谱估计这一部分的仿真硬件平台。
• ~ ( 252 ) c _ f - source - driven neutron noise analysis method is a way of measuring and analyzing the reactivity of reactor or subcritical reactor , which detects subcritical neutron multiplication factor , prompt neutron decay constant , and so on
  ~ ( 252 ) c _ f源驱动噪声分析法是一种测量、分析反应堆和次临界系统的快速反应性的方法,可作为临界安全的瞬时检测方法。
• Compare the collecting and analysis techniques of the two forms of signal , it is shown that the vibration analysis method is more suitable and scientific in evaluating the assemble quality of final drive
  通过对噪声、振动信号的采集方法,以及噪声与振动信号的分析方法进行对比后,认为采用振动信号的分析方法比噪声分析方法能更科学地检测主减速器的装配质量。
• C ) the noise mode was established for a large - scale array of fiber - optic hydrophones using tdm and wdm , and the methods were presented that suppress noises and enlarge dynamic range . d ) a scheme was given of constituting the very large - scale array composed of 512
  3 、针对一个大规模光纤水听器时分波分复用系统,建立了噪声分析模型,为抑制系统噪声、扩大系统动态范围提供了科学的方法。
• The final work of the paper is evaluating image quality . as for images after radiometric calibration , 3 - dimention noise analyzing method is introduced . for image after geometric calibration , three performance parameter are used to evaluate the images , and algorithm of the paper is validated
  给出了常用的辐射质量评估方法；对辐射校t后的图像，引进了三维噪声分析方法，起到了对图像辐射质量和辐射校计方法的评估作用；对几何校正后的图像，采用并计算了三个性能参数，验证了论文采用的校正算法的有效性。
• On the basis of analyzing information intention in a general meaning , systematically defining the extension scope of quality ' s concept , and researching of the division as well as establishment of the whole process ' s quality ring , it delves into the formation of product quality , the dynamic characteristics of product quality information , and builds the framework of quality information , nine implementation links of quality information transfer , and three function modules . and in the end , taking the analysis of information channel ' s distortion and noises in the general mode of information transfer , it puts forward ways to solve the " blocking - noise problem " in the transfer process of quality information in the respects of origin , channel and destination of information
  以一股意义上的信息内涵分析和系统地对质量概念外延范围的界定和划分、建立全过程质量环的研究为基础，详细考察了产品质量的形成、产品质量信息的动态特征，构建了质量信息框架、质量信息传递的九个实施环节和三个功能模块，最后以一般性信息传递模式中信道失真与噪声分析为基础，提出从信源、信道、信宿三方面解决质量信息传递过程中“阻噪问题”的思路。
• This dissertation aims at the problem of the noise of over length truck falling short of the lately country standard , and makes research on the reason of the gear - box vibrating noise . by combine using finite element analysis and experimental analysis method , the dissertation directly researches the vibrating noise of the gear - box , and takes some availability measures to control vibrating noise from the box surface . by improving the box to reduce its noise , and validate the effect
  本文针对一汽超长载重汽车噪声指标不符合国家最新标准的实际问题,对其变速箱振动噪声的产生机理进行深入研究,应用有限元分析与实验分析相结合的方法直接对其进行振动和噪声分析,在此基础上提出控制其振动噪声的有效措施,并通过对其箱体的改进设计,最终达到减振降噪的目的。
• ( 3 ) study on the control mechanism of structure noise radiated from rotary machines , we build a common model of rotary machine structure noise analysis relied on the general characters of rotary machines . based on this model , we analyzed various influence factors to structure radiant noise using the union of revolution and numerical calculation method . we found that the joint stiffness between the rotor and the frame is the most sensitive parameter of structure radiant noise by calculating and analyzing
  在旋转机械结构噪声控制方面，根据旋转机械的基本特征，建立了旋转机械结构噪声分析的简化模型，基于该模型利用解析与数值计算相结合的方法对结构噪声的各种影响因素进行了分析，通过计算分析发现，转子与机体的连接刚度是机体结构声的最敏感参数，同时各参数对结构噪声的影响具有互补性。