||Semi-active viscous damper for controlling civil engineering structures subjected to earthquakes
Afzal Suleman , Fernando Oliveira , Miguel Botto , Paulo Morais
||This paper presents the results of a study to evaluate the performance of several
control algorithms for a semi-active fluid damper aiming to reduce earthquake induced
vibrations. The performance of each algorithm is compared considering a single degree of
freedom dynamical model subjected to three alternative input actions: two time series of
filtered white noise and a synthesized seismic action. The performance of the system is
evaluated by measuring the reduction in relative displacement and acceleration.
Comparisons are also made with the passive and active systems. The results demonstrate
that semi-active devices can be an option for structural vibration mitigation.
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