Title:
|
A mixed H2/H∞-based semiactive control for vibration mitigation in flexible structures
|
Author:
|
Zapateiro de la Hoz, Mauricio Fabián; Karimi, Hamid Reza; Luo, Ningsu; Phillips, Brian M.; Spencer, Billie F.
|
Abstract:
|
In this paper, we address this problem through the design of a semiactive controller based on the mixed H2/H∞ control theory. The vibrations caused by the seismic motions are mitigated by a semiactive damper installed in the bottom of the structure. It is meant by semiactive damper, a device that absorbs but cannot inject energy into the system. Sufficient conditions for the design of a desired control are given in terms of linear matrix inequalities (LMIs). A controller that guarantees asymptotic stability and a mixed H2/H∞ performance is then developed. An algorithm is proposed to handle the semiactive nature of the actuator. The performance of the controller is experimentally evaluated in a real-time hybrid testing facility that consists of a physical specimen (a small-scale magnetorheological damper) and a numerical model (a large-scale three-story building) |
Publication date:
|
2010-06-23 |
Subject(s):
|
-Control automàtic -Enginyeria d'estructures -- Efectes sísmics -Enginyeria d'estructures -- Vibració -Sincronització -Lyapunov, Funcions de -Automatic control -Lyapunov functions -Structural engineering -- Earthquake effects -Structural engineering -- Vibration -Synchronization |
Rights:
|
Tots els drets reservats |
Document type:
|
Article |
Published by:
|
IEEE
|
Share:
|
|