Results 241 to 250 of about 4,345,353 (297)

Modal parameter identification using Z‐transforms

International Journal for Numerical Methods in Engineering, 1989
AbstractA method for the time domain identification of modal parameters of a vibrating structure using Z‐transformation sequences is presented in this paper.This identification proceeds using the Z‐transfer function of a vibrating structure from which an auto‐regressive and moving‐average (ARMA) model of the vibrating structure is derived.
Mickleborough, Neil C., Pi, Y.L.
openaire   +2 more sources

Mode isolation: A new algorithm for modal parameter identification

The Journal of the Acoustical Society of America, 2001
Multiple degree of freedom (MDOF) algorithms are the dominant methods for extracting modal parameters from measured data. These methods are founded on the notion that because the response of a linear dynamic system is the sum of many modal contributions, the extraction technique must deal with all of the modal parameters in a simultaneous fashion.
M V, Drexel, J H, Ginsberg
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Identification of Modal Parameters with Unknown Input

2003
The techniques developed for structural identification are typically devoted to obtain a structural model on the base of information on the response and on the forcing action. In many situations, however, it can be necessary to refer only to the measured responses.
DE ANGELIS, Maurizio, SEPE V., CAPECCHI, Danilo   +2 more
openaire   +3 more sources

Theory and Application of Modal Parameter Identification in Civil Engineering

Proceedings of the 3rd International Conference on Information Technologies and Electrical Engineering, 2020
Civil engineering is an important part of China's infrastructure equipment, which directly affects the lives of our people. In the process of civil engineering construction, it is necessary to detect, evaluate and monitor the overall structure of the engineering, so as to give full play to the characteristics of civil engineering.
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Identification Technology of Modal Parameter of a Strap-on Launch Vehicle

International Journal of Computational Methods, 2016
It is generally needed to conduct ground modal tests over strap-on launch vehicle to provide modal parameters for the attitude control design and load calculating. These modal parameters can also provide basis of installing sense organs on the launch vehicle.
Liu, Pan, Xie, Yong, Guo, Shao-Jing, Cai, Guo-Ping   +3 more
openaire   +1 more source

Effects of measurement noise on modal parameter identification

Smart Materials and Structures, 2012
In the past decade, much research has been conducted on data-driven structural health monitoring (SHM) algorithms with use of sensor measurements. A fundamental step in this SHM application is to identify the dynamic characteristics of structures.
S Dorvash, S N Pakzad
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Modal identification of gyroscopic distributed-parameter systems

AIAA Journal, 1990
A new modal identification method for gyroscopic distributed-parameter systems is presented. The method represents an extension of previous work for the class of self-adjoint distributed-parameter systems. The modal identification method is formulated as a variational problem in which stationary values of a functional quotient are sought.
Mark A. Norris, Larry Silverberg
openaire   +1 more source

The Optimization and Autonomous Identification of Modal Parameters

2011
For modal analysis (including SISO, MIMO, OMA), the accuracy of modal parameters depends mainly on the estimators used. Different parameters will be extracted even by the same user with the same method at different time. Here a criterion is presented which can compare the accuracy of the identification results.
J. M. Liu, S. Shen, M. Ying, S. W. Dong
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Modal Parameter Identification Using Simulated Evolution

AIAA Journal, 1997
A global optimization algorithm based on the Darwinian evolutionary theory is implemented for the identification of modal parameters of linear vibrating structures. The capability of the evolutionary search method in locating the global minimum among numerous local minima is demonstrated.
Chiang, Dar-Yun, Huang, Si-Tsong
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On the Identification of the Modal Parameters for a Flexible Turbomachinery Foundation

Volume 7: Structures and Dynamics, Parts A and B, 2012
The evaluation of the vibration behaviour of turbomachinery installations, where the model of the rotor support structure (foundation or casing) is unknown and the foundation has natural frequencies in or near the operating speed range, is still problematic. An attractive approach for identifying the foundation uses motion measurements of the rotor and
Minli Yu, Ningsheng Feng, Eric J. Hahn
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