Optimal bounded control for maximizing reliability of Duhem hysteretic systems

doi:10.1007/s10483-015-1986-9

Abstract

Abstract: The optimal bounded control of stochastic-excited systems with Duhem hysteretic components for maximizing system reliability is investigated. The Duhem hysteretic force is transformed to energy-depending damping and stiffness by the energy dissipation balance technique. The controlled system is transformed to the equivalent nonhysteretic system. Stochastic averaging is then implemented to obtain the Itô stochastic equation associated with the total energy of the vibrating system, appropriate for evaluating system responses. Dynamical programming equations for maximizing system reliability are formulated by the dynamical programming principle. The optimal bounded control is derived from the maximization condition in the dynamical programming equation. Finally, the conditional reliability function and mean time of first-passage failure of the optimal Duhem systems are numerically solved from the Kolmogorov equations. The proposed procedure is illustrated with a representative example.

Key words: reliability, Duhem hysteretic system, optimal bounded control, stochastic dynamical programming principle

2010 MSC Number:

O327

Ming XU, Xiaoling JIN, Yong WANG, Zhilong HUANG. Optimal bounded control for maximizing reliability of Duhem hysteretic systems. Applied Mathematics and Mechanics (English Edition), 2015, 36(10): 1337-1346.

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