波脊 meaning in Chinese
ripple ridge
wave ridge
Examples
- In order to improve signal noise ratio ( snr ) , wavelet denoising is used , and the radar in - pulse characteristics is extracted by wavelet - ridge , radar emitter signal sorting is realized by neural networks
该方法首先对接收到的雷达信号进行小波去噪，达到提高信噪比的目的，然后利用小波脊线法准确提取其脉内特征参数，最后基于神经网络实现信号的分选。 - This dissertation contains the following parts : the extraction algorithm for instantaneous frequency of asymptotic signals based on wavelet ridge is proposed in this dissertation , and the asymptotic estimation method for wavelet transform of asymptotic signals is deeply studied
本论文主要做了以下工作：提出了基于小波脊线的渐近信号瞬时频率提取算法，并研究了渐近信号小波变换的渐近估计方法。 - Taking dc motor test as an example , a creative idea of applications of some advanced signal processing tools , such as time - frequency analysis , wavelet , and instantaneous frequency ( if ) evaluation , in motor testing field is presented . the paper systematically summarizes basic theories of time - frequency analysis and wavelet transform based on which an in - depth research of effective if evaluation based on wavelet ridge and wavelet curve is carried out . in the end a fast t - n characteristic testing system with neither torque nor speed sensor is successfully developed
本论文主要关注小波分析在电机性能自动测试系统中的应用，针对传统电机测试系统以及信号处理技术在电机测试领域中应用的不足，以直流电机为例，提出了将时频分析、小波包变换以及基于小波脊的瞬时频率提取方法应用到电机测试领域的新思路；较系统地总结了时频分析和小波变换的基本理论，深入探讨了基于小波脊线和小波曲线的瞬时频率提取，并成功开发了基于正交小波包分析和基于小波脊线的瞬时频率提取的无转矩转速传感器的直流电机快速测试系统。 - The paper also studies fast arithmetic and programming of discrete time quadrature wt and wpt and takes a deep look into their additional applications in motor testing , including denoising , filtering and so on . starting from basic theory of time - frequency analysis and wavelet analysis of asymptotic signals , this paper investigates several if law extraction methods and presents an especially effective one using wavelet ridge
论文从时频分析的基本理论出发，在渐进信号小波分析的基础上，研究了渐进信号小波变换的渐进估计方法，提出了利用小波脊线来提取信号频率随时间连续变化规律(即瞬时频率)的方法。 - The algorithm is also applied in the broken rotor bars detection in squirrel cage induction machines , which is dependent on detecting the twice slip frequency modulation due to the speed or torque in the stator current , and the rotor bar faults can be detected effectively without some preprocessing
指出可以利用信号的小波脊线来提取频率随时间连续变换的信号的瞬时频率，并将该瞬时频率提取算法成功地应用到异步电动机定子起动电流信号的分析中，有效地提取出了转子断条故障特征。