摘要
基于瞬时最优控制方法和能量法的基本原理研究,推导出瞬时最优控制算法的能量平衡等式.进行基于能量法的瞬时最优控制算法的参数分析,考察时间间隔对结构动力反应以及结构能量分配的影响.结果表明:时间间隔增大会使结构的位移和速度响应减小,对加速度反应的影响还与结构自振周期相关;对能量分配的影响也随之减小;控制力和控制能与时间间隔和位移或速度的综合作用相关,时间间隔越大,输入地震动能量受结构周期影响越小.
Based on theoretical analysis of the instantaneous optimal control（IOC） algorithm and energy method,energy equilibrium equation of IOC algorithm was formulated.Effects on the parameters of the IOC algorithm are calculated,which may strongly affect on structural responses.Simulation analysis of single degree-of-freedom（SDOF） controlled structure is employed for analyzing the effects of time interval.The results show that the time interval in IOC algorithm affects on the structural displacement,velocity and energy contribution.With the time interval increasing,the responses of velocity and displacement of structure decrease.Acceleration results are related to time interval and structural period.Control force and control energy are related to time interval and the relationship of displacement and velocity.Time interval is larger,the effect of structural period on earthquake energy is smaller.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2011年第9期1356-1359,共4页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金重点资助项目(50338010)
关键词
瞬时最优算法
时间间隔
能量法
参数影响
动力反应
能量分配
instantaneous optimal control（IOC）
time interval
energy method
parameter effect
controlled responses
energy contribution
