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Proceedings Paper

Improved bang-bang control for a new type of piezoelectric friction damper
Author(s): Hong-Nan Li; Jun Li; Gangbing Song
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Paper Abstract

This paper presents a new design of piezoelectric friction damper, which consists of tube piezoceramic stack actuators, load cells, preload bolts, brass sheets, spring washers and slotted bolted connection. A semi-active control strategy for variable friction dampers based on an improved suboptimal Bang-Bang control algorithm presented in this paper is also developed. By using genetic algorithm, the amplitudes of the control and preloading friction forces in the control system are obtained for enhancing the seismic performance of the controlled structures. The proposed approach is applied to a three-story building with a variable friction damper installed in the first story. The numerical results indicate that more reduction of the peak accelerations under seismic excitations and a better adaptability can be achieved than those of the unmodified controller.

Paper Details

Date Published: 16 May 2005
PDF: 11 pages
Proc. SPIE 5760, Smart Structures and Materials 2005: Damping and Isolation, (16 May 2005); doi: 10.1117/12.597016
Show Author Affiliations
Hong-Nan Li, Dalian Univ. of Technology (China)
Jun Li, Dalian Univ. of Technology (China)
Gangbing Song, Univ. of Houston (United States)

Published in SPIE Proceedings Vol. 5760:
Smart Structures and Materials 2005: Damping and Isolation
Kon-Well Wang, Editor(s)

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