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ON THE UNIQUENESS OF MODAL PARAMETER ESTIMATION
Journal of Sound and Vibration, 1996We examine the question of uniqueness of solution to the modal parameter problem by applying a least-squares output error estimator to a six-degree-of-freedom shear building using both a two- and a six-parameter model. Multiple solutions are located by initiating the iterative parameter estimation algorithm from random starting points.
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Extraction of Normal Modes and Full Modal Damping from Complex Modal Parameters
AIAA Journal, 1997The objective is a general damping correction procedure for determining the undamped modal parameters from damped system realization parameters. A discrete-time state-space realization of model test data is obtained using the eigensystem realization algorithm and polyreference, resulting in a set of difference equations. The realization is converted to
Alvin, K. F. +2 more
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Modal Parameter Estimation on Automotive Development
SAE Technical Paper Series, 2012<div class="section abstract"><div class="htmlview paragraph">Modal parameter identification is used to identify those parameters of the model which describe the dynamic properties of a vibration system. Structural dynamic methods and technologies have been used with great success by the automotive industry.
Valdinei Sczibor +2 more
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Identification of Modal Parameters of Rotors
1984The occurence of instability in rotating machinery may be caused by different effects: oil film in journal bearings, sealings, internal damping etc.
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Parameter Identifiability Analysis by Modal Methods
IFAC Proceedings Volumes, 1982Abstract Several techniques are available for a priori existence and uniqueness analysis (testing system and parameter identiflability) in the identification of linear models of specified structure from experiments with restricted input and observations.
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Method for determining modal parameters
2019The present invention relates to a method for determining modal parameters of a system under test. The method comprises the steps of - taking a first set of values of output signals obtained under a first loading condition of the system, - determining for said first loading condition a parametric matrix model for the system, said parametric matrix ...
Guillaume, Patrick +3 more
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When CLIP meets cross-modal hashing retrieval: A new strong baseline
Information Fusion, 2023Xinyu Xia, Guohua Dong, Xiaomin Ying
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HCMSL: Hybrid Cross-modal Similarity Learning for Cross-modal Retrieval
ACM Transactions on Multimedia Computing, Communications and Applications, 2021Chengyuan Zhang +2 more
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A review of operational modal analysis techniques for in-service modal identification
Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2020Zhi Chao Ong +2 more
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