| 1. | Power spectrums analysis
能谱分析 |
| 2. | Power spectrum analysis and statistical moment function on a range of scales revealed scaling qualities of the date from stock market
摘要通过对幂谱和统计矩函数的分析，得出股票市场时间序列的无标度性。 |
| 3. | The functions of statistic analysis , data filtering , fft transition , power spectrum analysis , correlation analysis and etc are realized in the software
可以实现对数据的统计分析、滤波、 fft变换、功率谱分析、相关分析等。 |
| 4. | A power spectrum analysis method based on the phase of complex - wavelet - transform , which derives fault information from gear vibration signal by phase , is presented
提出了基于复小波变换相位功率谱的方法。该方法从复小波变换的相位的角度来提取齿轮振动信号中的故障信息。 |
| 5. | The power spectrum analysis can with accurate examine a rolling bearing ’ s structure and processing and assembling the error margin . time sequence analysis can pass to build up the time sequence model , we can see the peak of the spectrum of the fault ’ s clearly
功率谱分析可以精确诊断滚动轴承结构和加工装配误差类故障。时间序列分析能通过建立时序模型,从谱图上来更清晰的看出故障的谱峰。 |
| 6. | The main contents are as follows : by means of power spectrum analysis , coherence analysis , modal analysis and finite element method ( fem ) , the identification of noise sources of water supply system is successfully achieved
本文的主要工作和取得的成果如下：针对供水系统噪声污染严重的问题，进行了噪声源识别。运用功率谱分析、相干分析、模态分析技术、有限元法相结合的方法，找到了主要的噪声源。 |
| 7. | Mean shape factor and rms shape factor distributed on the roof of the structure with b exposure are measured . based on using of a multi - point high - speed pressure scanning system on rigid model , wind - induced dynamic responses are discussed by the method of power spectrum analysis
分析了在b类地貌类型下风荷载的分布特性，并根据刚性模型同步测压技术以及屋盖结构风致响应的谱分析方法，分析讨论了结构动态响应，并讨论了结构前几阶模态对系统响应贡献。 |
| 8. | Data acquisition , analysis and processing are integrated in structural vibration measurement and analysis system including frequency spectrum , correlation and power spectrum analysis of time signals of testing positions . the total structural behavior is constructed and structural mode shapes , whose natural mode is known , are decomposed and monitored
结构振动测试分析系统集数据采集、分析、处理为一体，其中包括对结构测点时域信号的频谱分析、相关分析、功率谱分析，同时还由结构测点处时域信号构建了结构的整体性态，在此基础上对固有振型已知的结构进行振型分解并监测。 |
| 9. | The noise suppression uses two methods ? mlms self - adaptive filter arithmetic and blind signal separation . the lung sounds data analysis uses time domain analysis , frequency domain analysis , power spectra analysis , time - varying spectra analysis and so on . healthy people and lung disease patients ’ lung sounds are collected by the system and the data affirms the reliability and practicability of the system
我们利用该系统对正常人和肺病患者的肺音进行了采集和分析,通过这些分析数据,既肯定了该系统的可靠性和实用性,又对各种肺音分析算法进行了对比和验证,对该系统的临床应用打下了良好的基础。 |
