本文采用搜索模极大值的方法,进而实现故障的精确测距。
To find out the singularity of the high coefficients of fault signal, the paper adopts the method of searching modulus maxima and realizes the precise rangefinder fault.
为解决海空复杂背景下红外弱点目标的检测,提出了基于小波变换模极大的检测算法。
The new algorithm based on wavelet transform modulus maxima was presented to resolve the problem of weak infrared point targets detection under the complicated background of sea and sky.
因此文中采用了一种有噪声控制的模极大值的算法来进行消噪,取得了较好的处理结果。
Therefore, a modules maxima algorithm controlled by noise is adopted in the paper to remove noise and acquires prefer results.
传统的模极大值序列处理方法虽然可以保留信号特征,但降噪后的信号在奇异点有毛刺和轻微的振荡。
Although traditional processing method of modulus maximum array can retain characteristics of signal, the signal after de-noising exists thorns and slight oscillation at singularity point.
通过预处理滤除工频周期分量,消除了小波变换在信号峰值处的模极大值,从而避免了对故障的误判。
As wavelet module maxima occur at peaks of signal, the pretreatment removes power frequency periodic components from electric signal and thus avoids misjudgments of fault.
根据模极大值在特征提取中的应用,本文提出了一种基于模极大值的超声波回波探测沉积物分类方法。
A classification method was proposed based on the application of modulus maxima in feature extraction. Different echo is gained to detect different sediment.
基于信号的奇异性检测理论,利用小波分解的高频系数是否具有模极大值作为区分稳态和非稳态现象的判据。
Based on the theory of signal strangeness detect, the maxima modulus in high frequency of wavelet resolving can be used as a criterion to classify steady and non-steady state phenomena.
基于小波变换的各个尺度上模极大值,本文深入研究了异常心电信号尤其是梗死发生时S - T段的检测。
Based on the modulus maxima at each scale of wavelet transform, this paper does a research into the detection of S-T segment of abnormal ECG, especially that of myocardial infarction.
通过对信号与噪声奇异性的分析,得出信号与噪声的小波变换模极大值在各个尺度上的表现截然相反的结论。
The singularities of signals and noises are investigated. A conclusion is drawn that the wavelet modulus maxima of signals have contrary behaviors from that of noises.
通过对信号奇异性的检测和对信号的消噪,提取出了被检测信号的模极大值,进而实现了行波信号的故障测距。
By detecting signal strangeness and reducing signal noise, the paper arrives at the maximum value of the detected signal, thus the fault location of the traveling wave signal is achieved.
探讨了分形测度小波变换极大值线的拓扑分岔情况,并提出了一种基于小波变换模极大值的多重分形谱估算方法。
Topologic bifurcation situation of maxima lines is also discussed. In the end, an estimation for multifractal spectrum is proposed in terms of wavelet module maxima lines.
利用小波变换模极大值和小波熵测度分别对其进行检测,对比表明,小波熵测度能更准确、实时地检测到各种暂态信号。
The contrast between wavelet transform maximal modulus and wavelet entropy shows that the latter is a better approach to detect transient signal accurately and timely.
在论述了小波分析、信号奇异性与小波变换模极大值性质关系的基础上,本文给出了一种基于小波变换模极大值的信号去噪算法。
Based on the wavelet transform and the relation between signal singularity and wavelet transform modular maximum, a noise removal technique is discussed.
利用小波变换模极大值原理,提出了用小波变换尺度谱检测瞬态信号波至点的新方法,研究了其检测无噪声和有噪声条件下的瞬态信号的能力。
Based on the principle of modulus maximum, a new approach using scalogram of wavelet transform for transient signal, under noise free condition or noise condition separately, is described.
以二次光滑小波作为小波函数,对水果红外图像进行二维二进小波变换,计算了小波变换结果的局部模极大值点,从而得到了水果红外图像的轮廓。
A quadratic lubricity wavelet as wavelet function was defined to do the two dimensional dyadic wavelet transform on fruit infrared image, and to get local modulus maxima from the results.
其次使用小波变换模极大方法对上证指数、深证成指和三支股票青岛海信、青岛啤酒、青岛海尔五分钟高频数据进行了多重分形谱的分析,并与MFDFA法的计算结果进行比较。
Next. WTMM is used to analyze multifractal spectrums of three stocks 5-minute high-frequency data of Qingdao Hisense. Qingdao beer and Qingdao Haier, and WTMM's results is compared with MFDFA's.
压模,软件产品的主拷贝,需要极大的精度去生产,是工厂的一件弥足珍贵的物品。
A prized object in the factory is the stamper, the master copy of a software product that takes great precision to produce.
负弹模法可适用于多种情况,且精度高又省事,为结构应力分析带来极大方便。
The negative elastic modulus method, highly accurate, easy to use, is useful in many cases, and it brings great convenience to the stress analysis oJ structures.
在第四部分中,我们主要探讨了相对强局部模,这是与相对极大子模有直接联系的一类模。
In section four, we mainly discuss r-strongly local module which is a class of modules being directly connected with r-small submodules.
由此产生的近终型制模技术,可以极大的缩短制模周期、降低生产成本。
Rapid near net shape casting technology can reduce the period of making model and the cost.
近些年来盲信道均衡引起了人们极大的兴趣,其中应用最广泛的自适应均衡算法是盲信道均衡恒模算法。
In the last few years, blind equalization techniques have gained an increasing interest. The most popular blind adaptation algorithm is the constant modulus algorithm (CMA).
从 而极大地降低了车身广告的制作成本,缩短了制作周期,是对车身广告制作模 式的一种根本性改进。
So it will reduces the production cost of bodywork advertisement tremendously, shorten the production period, it is a basic improvement of the bodywork advertisement production pattern.
因受零件自身尺寸的限制,极大影响了凸模的强度和刚度。
It is restricted by limit of punching part, the strength and rigidity of punch is affected significantly.
以典型冲压件整修模的模具结构为例。因受零件自身尺寸的限制,极大影响了模具凹模的强度和刚度。
Taking the die structure of typical punching parts shaving die as an example, since restricted by the parts size itself, the intension and rigidness of concave die is seriously affected.
由带隙端点反射极大时共振场分布我们可以得到,此带隙是由于同时激发的两个泄露模之间的相互作用造成的。
Electric field distributions reveal that this high reflectivity gap is due to the coupling between these two coincidentally excited leaky modes.
共模扼流圈的高频特征极大地影响了电磁干扰(EMI)滤波器抑制传导EMI噪声的性能。
The high frequency parasitic parameters of common mode(CM) choke significantly influence the performance of electromagnetic interference(EMI) filter for conducted EMI suppression.
共模扼流圈的高频特征极大地影响了电磁干扰(EMI)滤波器抑制传导EMI噪声的性能。
The high frequency parasitic parameters of common mode(CM) choke significantly influence the performance of electromagnetic interference(EMI) filter for conducted EMI suppression.
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