谱相关密度,spectral correlation density
1)spectral correlation density谱相关密度
1.Considering the main character of the early gear fault is a frequency modulation whose envelope spectrum is unable to identify,this paper studied another demodulation method——thespectral correlation density(SCD).针对齿轮初期故障以调频形式表现且包络解调仅能够解调幅的现状,以一般调制信号为模型,引入解析思想,对各类型调制信号进行二阶循环平稳分析,理论推导了各自的分析结果,给出了调制信号谱相关密度分析的统一构架,证明了解析形式的谱相关密度同时提取调幅、调频特征的能力。
2.The new method employs spectral smoothing algorithm to evaluate character slices ofspectral correlation density.通过对滚动轴承点蚀故障模型的研究,得到其二阶循环平稳特征,指出利用谱相关密度函数在循环频率域的信息,能够有效识别加性噪声干扰的点蚀故障类型,以此为依据提出了针对轴承局部故障识别的组合切片分析方法。
英文短句/例句
1.INFLUENCE OF THE NOISE ON SPECTRAL CORRELATION DENSITY ANALYSIS OF AM SIGNAL调幅信号谱相关密度分析中白噪声影响的研究
2.The paper is dedicated to study the influence of the additive Gaussian White Noise on the Spectral Correlation Density (SCD) analysis of Amplitude Modulated (AM) signals.重点研究了加性高斯白噪声对调幅信号谱相关密度分析结果的影响。
3.density-dependent pressure gradient与密度相关的压力梯度
4.Taqman Low Density Array Expression Study and Methylation Study of Associated Genes in Glioma;胶质瘤相关基因Taqman低密度表达谱芯片及DNA甲基化研究
5.spectral density谱线[频谱，光谱]密度
6.Dunhuang Pipa Tablatures:The Decisive Influence of String Plucking Techniques on the Formation of the Rhythm敦煌琵琶谱的节奏与演奏手法密切相关
7.Density-Increasing of Genetic Map and QTL Mapping for Phosphorous Efficiency Associated Traits in Soybean [Glycine Max (L.) Merr.];大豆遗传图谱加密及磷效率相关性状基因定位
8.Correlation of Density of Monoethylene Glycol with Temperature under Normal Pressure常压下乙二醇密度—温度相关性的研究
9.correlation spectroscopy相关光谱学，相联能谱学
10.PRINCIPLE OF SPECTRUM OF SIGN BIT CORRELATIVE VELOCITY AND EFFECT OF PRACTICE符号位相关速度谱的原理与实践效果
11.The correlation between the output of different dimension stock and stand density was significant.不同规格材的出材量高低与林分密度相关密切。
12.The speed of approach of the long-jump is closely related to the achievement.跳远的助跑速度与跳远成绩密切相关。
13.The transparence of the glaze depends on whether there is a separated-crystal layer in the glaze.瓷片的透明度与釉中析晶层密切相关。
14.Correlation analysis between the landscape pattern and population density in Guiyang.;贵阳市景观类型与人口密度相关分析
15.double frequency spectral density functio双重频率谱密度函数
16.Conclusion BMDs of the bilateral hips and forearms are highly correlated at relevant measurement sites;结论髋部和前臂骨密度双侧呈高度正相关 ;
17.Measurements of the Density and Viscosity of Mixtures Related PTA Manufacture at Atmospheric and High Pressures;PTA相关体系常压及高压下密度和粘度的测定
18.A relationship exists between tree density and fruit yields.植株密度和果实产量之间存在一种相关关系。
相关短句/例句
spectral correlation density function谱相关密度函数
3)density dependent密度相关
1.Assuming■~+ interacts with nucleon or■~+ by exchanging isoscalar mesonsσandω,the equation of state of{p,n,■~+}and possible metastable state are studied in the framwork of thedensity dependent relativistic hadron field theory(DDRH).假定■~+通过交换有效的同位旋标量介子σ和ω与核子和它本身发生相互作用,在密度相关的相对论平均场理论基础上研究了{p,n,■~+}系统状态方程和可能形成的亚稳定态。
2.Thedensity dependent relativistic hadron field theory is extended to inclusions of pentaquark θ~+.在密度相关的相对论平均场理论基础上,假定~+通过交换有效的同位旋标量介子σ和ω与其他重子发生相互作用,研究了强子在包含~+的奇异核物质中的性质改变。
3.Thedensity dependent relativistic hadron field theory(DDRH) containing meson δ is applied to very asymmetric nuclear matter.运用密度相关的平均场理论 ,分析了耦合常数随密度的变化及其对核子有效质量的影响 。
4)cross spectral density相交谱密度
5)phase density spectrum相位密度谱
6)spectrum correlation degree频谱相关度
1.In this paper, distribute parameter model was used to express UHV transmission lines, the spectrum characteristic of high-frequency signals was analyzed firstly, then a protection scheme based onspectrum correlation degree and spectrum energy was proposed.通过多信号分类(multiple signal classification,MUSIC)算法分析故障后三相电流的频谱,计算线路一侧的电流频谱相关性和电流频谱能量,利用其进行故障识别和确定故障相,在此基础上,利用线路两侧故障相的电流频谱相关度判断区内、外故障。
延伸阅读
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