A new spectroscopic mode identification method

2007 ◽  
Vol 147 ◽  
pp. 56-60
Author(s):  
W. Zima
Keyword(s):  
Mode Identification ◽  
Identification Method

A Modal Parameter Identification Method Based on Improved Covariance-Driven Stochastic Subspace Identification

2020 ◽  
Vol 142 (6) ◽  
Author(s):  
Chen Wang ◽  
Minghui Hu ◽  
Zhinong Jiang ◽  
Yanfei Zuo ◽  
Zhenqiao Zhu
Keyword(s):  
Parameter Identification ◽  
Gas Turbines ◽  
Excitation Frequency ◽  
Modal Parameters ◽  
Subspace Identification ◽  
Modal Parameter ◽  
Modal Parameter Identification ◽  
Mode Identification ◽  
Stochastic Subspace Identification ◽  
Identification Method

Abstract For the quantitative dynamic analysis of aero gas turbines, accurate modal parameters must be identified. However, the complicated structure of thin-walled casings may cause false mode identification and mode absences if conventional methods are used, which makes it more difficult to identify the modal parameters. A modal parameter identification method based on improved covariance-driven stochastic subspace identification (covariance-driven SSI) is proposed. The ability to reduce the number of mode absences and the solving stability are improved by a covariance matrix dimension control method. Meanwhile, the number of false mode identification is reduced via a false mode elimination method. In addition, the real mode complementation and the excitation frequency mode screening can be realized by a multispeed excitation method. The numerical results of a typical rotor model and measured data of an aero gas turbine validated the proposed method.

scholarly journals A photometric mode identification method, including an improved non-adiabatic treatment of the atmosphere

2003 ◽  
Vol 398 (2) ◽  
pp. 677-685 ◽  
Author(s):  
M.-A. Dupret ◽  
J. De Ridder ◽  
P. De Cat ◽  
C. Aerts ◽  
R. Scuflaire ◽  
...  
Keyword(s):  
Mode Identification ◽  
Identification Method

scholarly journals Modeling non-radial oscillations on components of close binaries

2013 ◽  
Vol 9 (S301) ◽  
pp. 447-448
Author(s):  
Olivera Latković ◽  
Attila Cséki
Keyword(s):  
Rotation Axis ◽  
Synthetic Data ◽  
Light Curves ◽  
System Model ◽  
Close Binaries ◽  
Mode Identification ◽  
Stellar Oscillations ◽  
Identification Method ◽  
Proposed Model ◽  
Local Surface Temperature

AbstractWe developed an advanced binary system model that includes stellar oscillations on one or both stars, with the goal of mode identification by fitting of the photometric light curves. The oscillations are modeled as perturbations of the local surface temperature and the local gravitational potential. In the case of tidally distorted stars, it is assumed that the pulsation axis coincides with the direction connecting the centers of the components rather than with the rotation axis. The mode identification method, originally devised by B. Bíró, is similar to eclipse mapping in that it utilizes the amplitude, phase and frequency modulation of oscillations during the eclipse; but the identification is achieved by grid-fitting of the observed light curve rather than by image reconstruction. The proposed model and the mode identification method have so far been tested on synthetic data with encouraging results.

Study of Identification Method of Drunk Driving Based on Wavelet Analysis

ICCTP 2011 ◽  
2011 ◽  
Author(s):  
Xing-jian Zhang ◽  
Xiao-hua Zhao ◽  
Jian Rong ◽  
Shi-li Xu
Keyword(s):  
Wavelet Analysis ◽  
Drunk Driving ◽  
Identification Method

An Identification Method of Related Group of Threads for a Recent Bug Thread by Peak Characteristics of Similarities

2012 ◽  
Vol 132 (2) ◽  
pp. 231-237
Author(s):  
Yuuki Imanara ◽  
Kota Itakura ◽  
Masaki Samejima ◽  
Masanori Akiyoshi
Keyword(s):  
Identification Method ◽  
Related Group
Sign in / Sign up

Export Citation Format

Share Document