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http://dx.doi.org/10.11112/jksmi.2011.15.1.235

Seismic Control of Tuned Mass Damper System with MDOF Sliding Mode Control Accounting for the Uncertainties  

Lee, Jin Ho (동의대학교 건축공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.15, no.1, 2011 , pp. 235-242 More about this Journal
Abstract
The control performance in active structural control system can be drastically deteriorated when the modeling errors and the uncertainties existing in the disturbances are disregarded in the designing stage. It can even throw the control system into an unstable phase, resulting in out of control against the seismic excitations. The purpose of the study is to investigate the control effectiveness of a non-linear control system called sliding mode controller(SMC) in cooperation with a Tuned Mass Damper subjected to the three seismic excitations selected from the FFT analysis. Even though the transient performance such as settling time and overshoot were deteriorated, the robustness against the system stability was appeared from SMC when the structural masses and stiffness perturbed within the range of ${\pm}30%$. SMC is a feasible technique for active structural control in cooperation with TMD against seismic disturbances, exhibiting robustness in perturbation of system stiffness and mass as well as uncertainties of the disturbances.
Keywords
Sliding mode control; Tuned mass damper; Non-linear control; Uncertainty;
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