A new semi-active control based on nonlinear inhomogeneous optimal control for mixed base isolation

Duc Chuan Vu Ioannis Politopoulos 1 Sette Diop 2
2 Division Systèmes - L2S
L2S - Laboratoire des signaux et systèmes : 1289
Abstract : This paper presents a control algorithm for seismic mixed base isolation, combining passive isolators and semi-active viscous dampers. The objective is to limit base displacement while avoiding undesirable amplification of the response of the non-isolated modes. To this end, the proposed algorithm takes into account the constraints on the damping coefficient of the semi-active damper and information on the excitation. It is based on the approximate iterative solution, at each control time step, of a nonlinear inhomogeneous constrained optimal control problem. An autoregressive model is used to obtain, at each control time step, a prediction of the upcoming excitation in a short time interval ahead. Numerical simulation results demonstrate the efficacy of the above method, especially in improving floor response spectra, and its superiority with respect to clipped-optimal algorithms.
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Article dans une revue
Structural Control and Health Monitoring, Wiley-Blackwell, 2017, pp. e2032. 〈10.1002/stc.2032〉
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Soumis le : mardi 21 novembre 2017 - 14:49:37
Dernière modification le : jeudi 5 avril 2018 - 12:30:23

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Duc Chuan Vu, Ioannis Politopoulos, Sette Diop. A new semi-active control based on nonlinear inhomogeneous optimal control for mixed base isolation. Structural Control and Health Monitoring, Wiley-Blackwell, 2017, pp. e2032. 〈10.1002/stc.2032〉. 〈hal-01643533〉

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