作　　者： ; ;

机构地区： 兰州理工大学土木工程学院防震减灾研究所

出　　处： 《世界地震工程》 2005年第3期57-63,共7页

摘　　要： 模拟地震激励输入结构的过程,将控制目标函数化解到每个时间步长上。用激励所产生的脉冲响应重新构造控制目标函数,直接从泛函变分出发,推导出了一种改进的最优控制算法,并用状态转移的数值方法加以实现。从概念上讲,本算法是一种更为合理的结构最优控制算法。算例表明,在相同控制能量下,本算法能更有效地削减响应峰值,且稳定性良好。 In this paper several models of optimal control algorithms for dynamical response of structures subjected to earthquake excitation are compared, and a new optimal control algorithm is proposed. The performance index is expressed by using impulse response at each time step, for simulating an earthquake wave which is input to a strucutre. An improved optimal control algorithm is derived by directly performing functional analysis, and it is realized by using the numerical method of state transition. The proposed algorithm is more reasonable in terms of concept for structural vibration control. The numerical example shows that the proposed method is more efficient for cutting off the peak response and has good stability under the same comtrol energy.

关 键 词： 结构动力反应 控制算法 智能隔震 最优控制 地震工程

领　　域： [建筑科学] [建筑科学]