Structural control has been a major research area i
n aerospace engineering aimed at solving
very complex problems related with analysis and des
ign of flexible structures. The efficiency
of these strategies to improve the performance of s
everal structural systems suggests its
potential to reduce damage and control earthquake4i
nduced response in civil structures.
Therefore, this technology has been well accepted b
y structural engineers as a feasible
approach to design improved earthquake resistant st
ructures. The present paper provide a brief
description of each control scheme describing the m
ain properties of different anti4seismic
solutions and presenting the most relevant developm
ents in this area. Control methodologies
and devices are highlighted identifying their advan
tages and limitations. The main focus of
this paper is to present a comprehensive state4of4t
he4art of passive control system. Different
passive techniques are described and the effectiven
ess in mitigating seismic hazard for
structures is addressed.The authors gratefully acknowledge the funding by Ministério da Ciência, Tecnologia e Ensino Superior, FCT, Portugal, under grant SFRH/BD/49094/2008