| 1. | In the course of filtration , interpolation is the essential step to produce the intrinsic mode functions , and the basis of the hilbert spectral analysis
在筛选过程中，插值是产生本征模函数关键的一步，是希尔伯特谱分析的基础。 |
| 2. | In addition , complicated tested data are decomposed into several intrinsic mode functions by this way . which low analyzing error , and predigest processing
另外，通过局域波法可把复杂的实测数据分解成有限个基本模式分量，从而简化了信号分析过程，降低了信号分析误差。 |
| 3. | The sliding mode function can be educed by constructing a lyapunov function . and the theory of fuzzy control is used to solve the sliding mode vibration problem
通过构造李亚普诺夫函数得出切变流形函数，得到一种开关控制，利用模糊控制克服了常规开关控制所固有的抖振现象。 |
| 4. | The main innovations embodied in this method are the introduction of the intrinsic mode functions based on local properties of signals , which make the instantaneous frequency meaningful
局域波分析方法的重大突破就是用基于信号局部特征的多个基本模式分量来描述信号的特征，并赋予了每个基本模式分量具有实际物理意义的瞬时频率。 |
| 5. | The application of multisensor information fusion of dempster - shafer evidential reasoning to sliding mode control with measuring noise was investigated , which helps to depress the uncertainty of the sliding mode function
摘要研究了d - s证据推理多传感器信息融合方法在存在量测噪声的滑模控制中的应用，它有助于削弱模函数的不确定性。 |
| 6. | Mode s is the next generation ssr ( secondary surveillance radar ) system . mode s provides enchanced surveillance and complete air - ground data link capability , as well as a / c mode function of traditional ssr
模式s是下一代地基雷达监视系统,除去传统二次监视雷达( ssr )的a / c模式功能外,模式s同时提供增强的监视能力和完全的地空数据链交互能力。 |
| 7. | The vibration signal is decomposed into several intrinsic mode functions ( imfs ) by emd , and the fault information is extracted from the imfs containing modulated signals , which then is effectively separated by emd , thereby the signal to noise ratio ( snr ) of diagnosis signal is improved obviously
首先，对复杂的振动信号进行经验模式分解，得到若干个基本模式分量，再对包含调制信号的基本式分量进行包络分析以提取故障信息。 |
| 8. | Therefore , research on improving the image resolution of sar and isar continuously has been a hot as well important topic . time series echo signal can be decomposed to imfs ( intrinsic mode function ) by emd ( empirical mode decomposition ) algorithm , which is distributed following frequency
经验模态分解( emd : empiricalmodedecomposition )方法能够把时间序列信号分解成有限数目的本征模态函数( imf : instrinsicmodefunction ) ,分解结果按频率高低分布。 |
| 9. | Application of emd and wavelet transform to diagnosis machine fault in this paper a signal singularity detection method is introduced , with which the signal is decomposed into imfs ( intrinsic mode function ) by the emd ( empirical mode decomposition ) and the singularity of the imfs is extracted by the wavelet transform
利用emd方法和小波变换进行机械故障诊断本文采用经验模式分解( emd )与小波变换相结合的方法分析非平稳机械故障信号的奇异性，进行机械故障诊断。 |
| 10. | In this article , considering the character of the one - dimensioned continuum and the cross - section , the varied quotiety of the strain can be presented as the mode function to identify the damage . and inversion of the elastic wave is presented to detect the injures when the area is the variable of the inversion , for the pip usually buried under the earth or enwrapped into the protection make the detection difficulty by the mode of vibrancy . the influence of the area must be considered if the exactness is the pre - requisition
在论文中，考虑到压力管道的一维性质，提出用应变模态改变变化率的方法对一维的结构进行损伤识别；同时考虑到在实际的工程和现场测试中，压力管道大多深埋在地下或者有外在的保护膜，不宜进行模态的检测，所以也考虑利用弹性波的方法对压力管道的性质参数和截面性质进行反演识别，从而得到我们感兴趣的东西，达到损伤识别；一般，在利用弹性波反射方法进行损伤检测中，不考虑截面效应对弹性波的衰减影响，这就对损伤检测造成一定的影响，本文考虑截面效应的影响，通过实验来确定截面效应系数。 |
