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Flexible Multibody System Linear Modeling for Control Using Component Modes Synthesis and Double-Port Approach

Perez Gonzalez, José Alvaro and Alazard, Daniel and Loquen, Thomas and Pittet, Christelle and Cumer, Christelle Flexible Multibody System Linear Modeling for Control Using Component Modes Synthesis and Double-Port Approach. (2016) Journal of Dynamic Systems, Measurement, and Control, 138 (12). 121004. ISSN 0022-0434

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Official URL: http://dx.doi.org/10.1115/1.4034149

Abstract

The main objective of this study is to propose a methodology for building a parametric linear model of flexible multibody systems (FMS) for control design. This new method uses a combined finite element (FE)–state-space approach based on component mode synthesis and a double-port approach. The proposed scheme offers the advantage of an automatic assembly of substructures, preserving the elastic dynamic behavior of the whole system. Substructures are connected following the double-port approach for considering the dynamic coupling among them, i.e., dynamic coupling is expressed through the transfer of accelerations and loads at the connection points. The proposed model allows the evaluation of arbitrary boundary conditions among substructures. In addition, parametric variations can be included in the model for integrated control/structure design purposes. The method can be applied to combinations of chainlike or/and starlike flexible systems, and it has been validated through its comparison with the assumed modes method (AMM) in the case of a rotatory spacecraft and with a nonlinear model of a two-link flexible arm.

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National d'Études Spatiales - CNES (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
French research institutions > Office National d'Etudes et Recherches Aérospatiales - ONERA (FRANCE)
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Deposited By: Daniel Alazard
Deposited On:09 Dec 2016 13:13

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