1. Technical Papers: Optimal Bounded Semi-Active Control of Hysteretic Systems with MR Damper.
- Author
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Huan, R. H., Li, X. P., Wu, Y. J., and Zhu, W. Q.
- Subjects
- *
STRUCTURAL analysis (Engineering) , *STRUCTURAL engineering , *STOCHASTIC analysis , *STOCHASTIC processes , *STOCHASTIC systems , *NUMERICAL analysis - Abstract
A bounded stochastic optimal semi-active control strategy for random excited hysteretic systems by using MR damper is proposed and illustrated by an example of a single degree-of-freedom hysteretic system. First, the dynamics of MR damper and the hysteretic force are expressed by using the Bouc-Wen model. Then, the system is converted into an equivalent nonlinear non-hysteretic stochastic system, from which the optimal bounded semi-active control law consisting of optimal unbounded control and bang-bang control is derived by using stochastic averaging method and stochastic dynamical programming principle. Finally, the response of optimally controlled system is predicted from solving the Fokker-Planck-Kolmogorov (FPK) equation associated with the fully averaged Itô equation. Numerical results show that the proposed control strategy has high control effectiveness and efficiency. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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