Robust control of an intelligent truss structure


Abreu, G.L.C.M., Lopes Jr, V. and Brennan, M.J. (2010) Robust control of an intelligent truss structure. In, Brennan, M.J., Kovacic, Ivana, Lopes, V., Murphy, K., Petersson, B., Rizzi, S. and Yang, T. (eds.) Recent Advances Structural Dynamics: Proceedings of the X International Conference. Southampton, GB, University of Southampton, 12pp.

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Description/Abstract

This paper presents an active damping control of an intelligent truss structure using pair of piezoelectric stack actuators collinear with force transducers and a H¥ robust control strategy. A finite element model of the structure is constructed using the three-dimensional frame elements considering electro-mechanical coupling between the host structure and piezoelectric stack actuator.

In this paper, the active member placement is determined by using the fraction of modal strain energy as an optimal index. The performance objectives and robustness to high frequency unmodeled dynamics are considered in the controller design. The purpose of the controller is to minimize the effect of disturbances on the entire structure. The numerical simulation results demonstrate that the active members of the structure and the robust control strategy can effectively reduce truss vibrations.

Item Type: Book Section
Additional Information: Paper No. 050 (Format - USB Pen Drive)
ISBNs: 0854329102 (paperback)
9780854329106 (paperback)
Keywords: active damping control, h¥ robust control, truss structure, piezoceramic stack actuators, finite element method
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Q Science > QC Physics
Divisions: University Structure - Pre August 2011 > Institute of Sound and Vibration Research > Dynamics
ePrint ID: 160679
Date Deposited: 21 Jul 2010 08:05
Last Modified: 27 Mar 2014 19:16
URI: http://eprints.soton.ac.uk/id/eprint/160679

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