1) auto-spectrum
自谱
1.
A method is set forth for the conversion between auto-spectrum and bi-spectrum.
阐述自谱与双谱相互转换的一种实现方法。
2) automatic spectra-stabilization
自动稳谱
1.
A new automatic spectra-stabilization method for natural gamma ray spectralog.;
一种用于自然伽马能谱测井仪器的自动稳谱技术
3) autocorrelation spectrum
自相关谱
1.
The three character parameters with perfect regulation have be surveyed in autocorrelation spectrum: autocorrelation spectrum amplitude (Amax), the first zero-cross .
在分析以往"计算薄互层砂岩厚度"技术基础上,通过大量的正演模型及提取多种特征参数等工作,优选出对薄互层砂岩厚度表征良好的一类特征参数———自相关谱。
4) auto-cross spectrum density method
自互谱法
5) self-spectral function
自谱函数
1.
Based on an ARMA(auto-regression moving average) model for turbine rotor vibration-fault series,the authors have calculated the self-spectral functional values through the use of ARMA model parameters and established a self-spectral function atlas for turbine rotor vibration-fault time series.
根据Bently实验台所采集的碰摩、松动、不对中、不平衡4种典型的汽轮机转子振动故障水平方向与垂直方向的数据所建立的汽轮机转子振动故障序列自回归滑移平均(ARMA)模型,由ARMA模型参数计算自谱函数值,建立汽轮机转子振动故障时间序列的自谱函数图谱。
2.
According to the characteristics of turbine rotor vibration, faults nonlinear characteristics are studied by the methods of fractal box counting dimension, ARMA self-spectral function, Euclidean space dual hidden layers neural network of ARMA model and wavelet packet analysis based on the four typical vibration faults data of turbine rotor collected from the Bently experiment set.
针对汽轮机转子振动故障的特点,根据Bently实验台所采集的4种典型汽轮机转子振动故障数据,运用分形盒维数、ARMA自谱函数、ARMA模型的二维双隐层神经网络和小波包分析方法研究了振动故障的非线性特征,进行故障诊断。
6) autoregresslve spectrum
自回归谱
1.
As a signal analysis method,both empirical mode decomposition and autoregresslve spectrum are introduced.
EMD是一种适用于非线性、非平稳信号的自适应分析方法,故障信号经EMD分解后,提取对故障敏感的分量作自回归谱分析,可以得到高信噪比的特征量。
补充资料：自调自净自度
【自调自净自度】
（术语）同自调项。
（术语）同自调项。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条