The local wave decomposition method is a new method to analyse instability and nonlinearity.
而局域波分解法是一种新的分析非平稳、非线性的工具。
The blind source separation fault diagnosis method based on Local wave time-frequency images is developed.
提出了一种基于局域波时频图像的盲源分离故障诊断方法。
On the basis of the methods above, the method of time-frequency analysis: local wave method is introduced.
在时域、频域分析方法的基础上,论述了一种时频域分析方法这——局域波法。
The research is helpful to the improvement of local wave decomposition algorithm and the applications of local wave analysis.
对局域波分解算法的改进和局域波分析的应用具有参考价值。
Then, Local Wave method is introduced in consideration of the non-stationarity characteristic of the vibrating signals from NC machines.
针对数控机床机械系统的非线性和振动信号的非平稳特性,引入局域波分析方法。
Weak fault signal was divided into finite local wave components with different simple-intrinsic modes, so that signal was separated from noise.
利用局域波法将微弱的故障信号分解为有限的并且具有不同基本模式的分量,每个分量是单一成分信号,实现了信噪分离。
In the view of feature signal extraction, the local wave time-frequency analysis and information entropy were used to deal with fault diagnosis.
从特征信号提取的角度出发,采用局域波时频分析和信息熵结合的方法进行往复式压缩机故障诊断。
Because the Local wave T-F spectrum can be showed in the gray image, so we use the moment invariants of time-frequency image as the fault features.
由于局域波时频谱可以表示为灰度图像。因此,利用图像信息的不变矩进行故障特征提取。
After signal local wave decomposition, the information entropy according to time-frequency distribution was established, and it was used as characteristic parameter for fault recognition.
对信号进行局域波分解后,建立基于时频分布的信息熵,以此作为故障识别的参数。
The concept of local energy in time-frequency plane, based on local wave theory, is defined. Then a new feature extraction method based on the local energy in time-frequency plane is given.
在局域波理论的基础上,引入了时频局部能量的概念,进而提出了一种基于时频局部能量的特征提取方法。
The research work mentioned above enhances the local wave method. It also proved that the methods which are introduced in the paper can effectively identify the fault and solve practical problems.
以上研究工作在一定程度上丰富和完善了局域波分析方法,诊断应用表明本文中提出的方法能够有效的识别故障,解决实际问题。
"If any wave motor of which I have knowledge will be a success the Reynolds is the one," said a local engineer who also happened to be a director of the newly formed California wave motor Company.
在我所了解的波浪发电机当中如果有一个会成功的话那便是雷诺兄弟的了“,一名当地的工程师,同时碰巧也是刚成立不久的加州波浪发电机公司的执行董事如是说。”
There‘s a new wave art show currently on exhibit up at the local college dallery.
本地大学美术馆里正在举办一个新浪潮艺术作品展。
Chrysler escaped a wave of nationalisation in Peru because its local factory manufactured only half the components needed to assemble a car.
克莱斯勒就在秘鲁逃脱了一次国有化风潮,因为它在当地的制造工厂仅需一半的原料就可以组装一辆车。
New footage also emerged of the tsunami striking last Friday, filmed by a local reporter who fled to safety as the wave swept in.
有关上周五海啸袭击扫过时,一个逃到安全地带的当地记者拍摄到的新录像引起了注意。
The second wave could be companies with big and successful operations in China itself, where local consumers are witnessing the successful growth of many global companies themselves.
而第二批目标可能是在中国拥有大规模成功业务的企业。中国消费者正目睹许多全球性企业自身获得成功增长。
It's expensive to get wave-generated electricity ashore and add it to a local grid.
沿海地区通过海浪发电并且将电力传送至当地电网需要高昂的投入。
The number of people listening to short-wave radios has been dropping fast, while a growing number now listen online or via local FM re-transmissions.
收听短波电台的听众人数急剧下降,相反在线收听或者通过当地调频接受的用户不断增加。
The old international broadcasters have the resources to deal with censorship: the cocktail of satellite, short-wave, Internet and local FM broadcasts offers a powerful mix of solutions.
老牌国际电台有对付审核制度的办法:利用卫星,短波,网络和当地FM电台的组合拳,总能有效解决。
Teams have also had to increase their expenditure on security to ward off a wave of attempted armed robberies of their local academies.
许多球队也不得不增加安保方面的花销,以防止他们在委内瑞拉的棒球学校遭受武装抢劫企图的恶浪冲击。
Thus FM radio at relatively high frequencies is used for local stations but does not travel far, whereas short-wave radio, at low frequencies, can stretch around the world.
因此地方无线电台使用频率相对较高调频无线通讯,而低频短波无线电则可以遍及全球。
Boehlert and others say that even if wave energy has some local environmental impacts, it would likely be far less harmful than coal - and oil-fired power plants.
Boehlert和其他人认为,即使波浪能源对局部环境有影响,它应该比用煤、石油为燃料的电厂危害小很多。
There's a new wave art show currently on exhibit up at the local college gallery.
本地大学美术馆里正在举办一个新浪潮艺术作品展。
The features of local shock wave solution without gaseous self-gravitation are similar qualitatively but different quantitatively with the results of this paper.
与非自洽的局部激波解相比,两者的定性特征相似,但定量结果有较大差别。
A phase-space(local angle domain) marching algorithm of wave propagation is proposed in the general frame case, based on the wave equation for inhomogeneous media.
本文从非均匀介质中波动方程出发,提出了基于一般标架的相空间(局部角度域)波传播的步进算法。
To survey and Compare the effect of wave - plate and straight plate internal fixation on the blood supply of local cortical bone.
本研究旨在观察和比较波形与直形钢板内固定对局部皮质骨血供的影响。
Theres a new wave art show currently on exhibit up at the local college gallery.
本地大学美术馆正在举办一个新浪潮艺术作品展。
We also show how to get a local orientation and an approximate formula for geomagnetic declination. Our work clarifies the misconception about polarized wave of antenna.
给出当地方向的确定方法和地磁偏角的近似计算式,澄清了接收天线极化波容易造成的误解。
We also show how to get a local orientation and an approximate formula for geomagnetic declination. Our work clarifies the misconception about polarized wave of antenna.
给出当地方向的确定方法和地磁偏角的近似计算式,澄清了接收天线极化波容易造成的误解。
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