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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A tutorial on a multi-mode identification procedure based on the complex-curve fitting method

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Author(s):
Noppeney, Victor T. [1] ; Boaventura, Thiago [1] ; Medeiros, Klaus [1] ; Varoto, Paulo [1]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Sao Carlos Sch Engn, Av Trab Sao Carlense 400, BR-13566590 Sao Carlos, SP - Brazil
Total Affiliations: 1
Document type: Review article
Source: JOURNAL OF VIBRATION AND CONTROL; JAN 2022.
Web of Science Citations: 0
Abstract

Modal identification is a key step in modal analysis. It enables the researcher to extract modal parameters, such as natural frequency, amplitude, and damping from a given structure. There are a considerable number of techniques in the state of the art aiming to address this problem, where multi-mode approaches arise as an appealing choice due to their ability to deal with mode coupling. This tutorial paper focuses on the complex-curve fitting technique, originally conceived for an application distinct from modal analysis. It aims at guiding other researchers by providing a tutorial-like and in-depth analysis of this important method, associated with a nonlinear weighting procedure for improved precision. Additionally, this paper fills a gap on the original technique, which is limited to the ratio of two polynomials, by proposing an automatic parameter extraction technique. The original and improved methods are applied on both simulated and experimental data, highlighting the effectiveness of the proposed changes. The proposed procedure is also compared with the rational fraction polynomial method. (AU)

FAPESP's process: 18/15472-9 - Hydraulic actuation impedance control for robots with legs and arms
Grantee:Thiago Boaventura Cunha
Support type: Research Grants - Young Investigators Grants
FAPESP's process: 19/10773-3 - Transparency control of exoskeleton robots
Grantee:Victor Tamassia Noppeney
Support type: Scholarships in Brazil - Master