• Controlled friction damping us...

Result: Controlled friction damping using optimally located structural joints

Title:
Controlled friction damping using optimally located structural joints
Authors:
GAUL, Lothar, HURLEBAUS, Stefan, ALBRECHT, Hans, WIRNITZER, Jan
Source:
Control and observer design for nonlinear finite and infinite dimensional systemsLecture notes in control and information sciences. :335-350
Publisher Information:
Berlin; New York: Springer, 2006.
Publication Year:
2006
Physical Description:
print, 24 ref 1
Original Material:
INIST-CNRS
Subject Terms:
Control theory, operational research, Automatique, recherche opérationnelle, Documentation, Computer science, Informatique, Sciences exactes et technologie, Exact sciences and technology, Physique, Physics, Domaines classiques de la physique (y compris les applications), Fundamental areas of phenomenology (including applications), Mécanique des solides, Solid mechanics, Mécanique des structures et des milieux continus, Structural and continuum mechanics, Vibration, onde mécanique, stabilité dynamique (aéroélasticité, contrôle vibration...), Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...), Sciences appliquees, Applied sciences, Informatique; automatique theorique; systemes, Computer science; control theory; systems, Automatique théorique. Systèmes, Control theory. Systems, Synthèse des systèmes de commande, Control system synthesis, Commande optimale, Optimal control, Actionneur, Actuator, Accionador, Algorithme recherche, Search algorithm, Algoritmo búsqueda, Analyse multicritère, Multicriteria analysis, Análisis multicriterio, Approche probabiliste, Probabilistic approach, Enfoque probabilista, Commande force, Force control, Control fuerza, Commande optimale, Optimal control, Control óptimo, Contrôle vibration, Vibration control, Control vibración, Dissipation énergie, Energy dissipation, Disipación energía, Frottement, Friction, Frotamiento, Grammien contrôlabilité, Controllability grammian, Grammiano contrabilidad, Grammien observabilité, Observability grammian, Grammiano observabilidad, Interface solide solide, Solid solid interface, Interfase sólido sólido, Optimisation, Optimization, Optimización, Position transducteur, Transducer position, Posición transductor, Positionnement, Positioning, Posicionamiento, Problème valeur propre, Eigenvalue problem, Problema valor propio, Programmation discrète, Discrete programming, Programación discreta, Programmation non linéaire, Non linear programming, Programación no lineal, Rétroaction, Feedback regulation, Retroacción, Structure en treillis, Truss structure, Estructura celosia, Synthèse commande, Control synthesis, Síntesis control, Système actif, Active system, Sistema activo, Système contrôle commande, Monitoring control system, Sistema control mando, Système passif, Passive system, Sistema pasivo
Document Type:
Conference Conference Paper
File Description:
text
Language:
English
Author Affiliations:
Institute A of Mechanics, University of Stuttgart, Pfaffenwaldring 9, 70550 Stuttgart, Germany
Department of Civil Engineering, Texas A&M University, 3136 TAMU, College Station, TX, 77843-3136, United States
ISSN:
0170-8643
Access URL:
http://pascal-francis.inist.fr/vibad/index.php?action=search&terms=18376197
Rights:
Copyright 2007 INIST-CNRS
CC BY 4.0
Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS
Notes:
Computer science; theoretical automation; systems

Physics: solid mechanics
Accession Number:
edscal.18376197
Database:
PASCAL Archive

Further Information

Lightweight structures typically have low inherent structural damping. Effective vibration suppression is required, for example, in certain applications involving precision positioning. The present approach is based on friction damping in semi-active joints which allow relative sliding between the connected parts. The energy dissipation due to interfacial slip in the friction joints can be controlled by varying the normal pressure in the contact area using a piezo-stack actuator. This paper focuses on the optimal placement of semi-active joints for vibration suppression. The proposed method uses optimality criteria for actuator and sensor locations based on eigenvalues of the controllability and observability gramians. Optimal sensor/actuator placement is stated as a nonlinear multicriteria optimization problem with discrete variables and is solved by a stochastic search algorithm. At optimal locations, conventional rigid connections of a large truss structure are replaced by semi-active friction joints. Two different concepts for the control of the normal forces in the friction interfaces are implemented. In the first approach, each semi-active joint has its own local feedback controller, whereas the second concept uses a global, clipped-optimal controller. Simulation results for a 10-bay truss structure show the potential of the proposed semi-active concept.