The theory that time domain energy spectrum function is same as frequency domain energy spectrum function is applied to search for the similar time subsequence the fast, in order to analyze the measuring and control system s regular pattern.
在分析测控系统实时数据库数据量和结构的基础上,提出了两次读取(粗读,细读)实时数据库的方法,提高了实时数据库在线分析的速度,并给出了程序流程图;采用时域能量与频域能量谱函数相同的理论在线快速查找相似的时间子序列,用以分析测控系统的规律性。
The exact expression of spectrum function of Laplician on special triangle is derived by theta function identities and Mellin transformation.
由theta函数的恒等式和Mellin变换,得到了特殊三角形上Laplican算子谱函数的严格表达式。
The wave envelopes of the continuous and discrete spectrum of the barotropic spherical Rossby wave are calculated using the method of spectrum function expanding.
利用按谱函数展开的方法,计算和分析了正压球面Rossby波的连续谱和离散谱的波包结构、演变和传播特征,发现无论是结构、演变还是传播,连续谱波包和离散谱波包都很不相同。
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。
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。
A method for calculating the wave-making resistance of a multi-hull ship is put forward based on the Michell linear wave resistance theory,which extends the wave spectrum function of mono-hull ship to the multi-hull ship.
利用Michell线性兴波理论,从单体船的波谱函数出发推广到多体船,推导了多体船兴波阻力计算公式,并将计算结果与试验结果进行了比较,计算兴波阻力结果可以反映试验趋势,有效马力比较接近于试验结果,可以为多体船的方案优选提供依据。
The paper presents a method for calculating the wave-making resistance of multi-hull ships, which is based on the Michell linear wave resistance theory and extends the wave spectrum function of mono-hull ship to the multi-hull ship.
该文利用Michell线性兴波理论,从单体船的波谱函数出发,依据波谱函数的可叠加性推广到多体船,推导了单体船、双体船、三体船、四体船以及五体船的兴波阻力计算公式,给出了各种多体船型兴波干扰成分的研究,并将相关船型的阻力计算结果与试验结果进行了对比,比较表明计算的兴波阻力结果可以反映试验趋势,有效功率比较接近于试验结果,可以为方案论证阶段多体船的方案选优提供依据。
A filter whose transfer function is matched with the frequency spectrum function of input signal.
其传递函数与输入信号的频谱函数相匹配的一种滤波器。
A Study on the wind load power spectrum function of complex shaped super-tall buildings
复杂体型超高层建筑层风力功率谱函数研究
The Analysis of Anti-noise Performance of Correcting Methods on Discrete Spectrum and Application
一种不依赖窗谱函数的校正方法及应用
double frequency spectral density functio
双重频率谱密度函数
The angular part of a continuum wave function is, of course, a spherical harmonic.
连续谱波函数的角度部分当然是球谐函数。
Spectroscopic parameters and potential energy function of the ground state of ArH~+
ArH~+基态的势能函数与光谱常数
Spectral transfer function of the Fourier transform spectral imager
傅里叶变换光谱成像仪光谱传递函数研究
Pseudospectral Method Using Generalized Laguerre Functions and Its Applications;
广义Laguerre函数的拟谱方法及其应用
Calculation of the Energy Levels andWavefunction for Four-well Potentialby Means of B-spline Technique;
一维四势阱能谱和波函数的B splines计算
The Research of Welch Method in Estimate of Power Spectram;
功率谱估计的Welch方法中的窗函数研究
Inequalities of the Spectral Radius of Kronecker Products for Random Matrix Functions
随机矩阵函数Kronecker积的谱半径的不等式
Influence of Window Function on The Estimation Precision of Traditional Power Spectrum
窗函数对传统功率谱估计精度的影响
The Analysis of the Sampling Modulation Transfer Function and the Influence on the Gaussian Spectra
色散型光谱仪采样调制传递函数及对高斯型光谱谱线的影响
Application of Correlation Function and its Spectra to Digital Signal Processing System;
相关函数及其谱在数字信号处理系统中的应用
Control Construction Functions of Digital-Control Fabrication for Multilayer Dielectric Thin Film Reflector for Spectral Reshaping
光谱调制反射镜的数控加工控制结构函数
THE ENERGY SPECTRUM AND THE WAVE FUNCTION OF BLOCH ELECTRON IN A UNIFORM MAGNETIC FIELD
布洛赫电子在均匀磁场中的能谱和波函数
The Study on the Modulation Transfer Function of Heperspectral Imager Imaging-Link;
超光谱成像仪成像链的调制传递函数研究
Spectral Methods Based on Prolate Spheroidal Wave Functions for Time-Dependent Problem
求解时间相关问题的基于长球波函数的谱方法