GDEE-BASED STOCHASTIC OPTIMAL CONTROL OF HYSTERETIC STRUCTURES

摘要：

The physical stochastic optimal control strategy is extended, and a novel nonlinear stochastic optimal control method of hysteretic structures is developed, referring to the optimal polynomial control scheme. For an illustrative purpose, the nonlinear stochastic optimal control of an earthquake-excited multidegree-of-freedom hysteretic structure described by Bouc-Wen differential model is carried out. Numerical results reveal that the linear control with the 1storder controller suffices even for the hysteretic systems when the newly developed exceedance probability based control criterion for designing the optimal weighting matrices is employed. This is practically meaningful since it bypasses the need to utilize nonlinear controllers which may be associated with dynamical instabilities due to time delay and computational dynamics. It is remarkable, meanwhile, that the response performance and energy-dissipation behavior of the controlled hysteretic structures can be improved to a certain extent.

关键词： generalized density evolution equation physical stochastic optimal control polynomial controllers ezceedance probability Bouc-Wen model

作者: Jie LI Yongbo PENG Jianbing CHEN

作者单位: State Key Laboratory on Disaster Reduction in Civil Engineering, School of Civil Engineering, Tongji University, China

会议类型: 国际会议

会议名称: The Second Asia-Pacific Young Researchers and Graduates Symposium(第二届亚太地区结构青年专家研讨会)

会议地点: 杭州

会议语种:英文

页码: 113-122

在线出版日期: 2010-03-27（万方平台首次上网日期，不代表论文的发表时间）