TIOC半主动控制算法在相邻结构地震响应控制上的应用

林 伟;陈尚鸿;祁 皑;张根明

振动与冲击 ›› 2011, Vol. 30 ›› Issue (12) : 141-146.

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振动与冲击 ›› 2011, Vol. 30 ›› Issue (12) : 141-146.
论文

TIOC半主动控制算法在相邻结构地震响应控制上的应用

  • 林 伟;陈尚鸿;祁 皑;张根明
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Trust-region based instantaneous optimal semi-active control on earthquake excited adjacent structures

  • LIN Wei; CHEN Shang-hong; Qi Ai; ZHANG Gen-ming
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摘要

在相邻结构间连接磁流变(MR)阻尼器可以有效减小两边建筑物的地震响应,同时也能通过控制建筑物之间的相对位移来防止碰撞。本文将基于信赖域的瞬时最优半主动控制算法(TIOC)应用于MR阻尼器连接的相邻结构振动控制问题中,首先由相邻结构动力方程出发建立了半主动控制问题的最优化方程组,进而得到TIOC半主动控制算法相应的带有限界约束的最小值问题在每个时间步求解TIOC最优半主动控制力。最后通过一安装有MR阻尼器的相邻建筑物的数值仿真分析对算法进行了验证。结果表明:TIOC半主动控制算法可以有效减小结构的地震响应;与Clipped-optimal控制算法相比在多阻尼器工况可以更好地控制相邻结构之间的相对位移;TIOC控制算法具有很好的适应性,可以通过改变算法中的控制目标函数使相应的控制效果发生明显改变,因此在实际应用中应该谨慎选取目标函数。

Abstract

It is an effective solution to install MR damper on adjacent structure to mitigate seismic responses and prevent pounding during earthquake. In this paper, trust-region based instantaneous optimal semi-active control algorithm (TIOC) is introduced to earthquake excited adjacent structure installed with MR damper. Based on the equation of motion, the optimization equations of the semi-active control problem are first proposed. And then TIOC optimization problem subjected to a bound constraint is deduced, and optimal semi-active control forces are calculated at every time step. Finally, simulation is carried on adjacent structures installed with MR dampers applying TIOC algorithm. The results show that the seismic responses of adjacent structures can be reduced effectively; compared with Clipped-optimal control algorithm, TIOC algorithm is more capable of controlling the relative displacement between the structures; it is found that TIOC algorithm has great adaptability, the controller’s behavior can be significantly changed with the objective function and thus should be decided carefully.

关键词

相邻结构 / 基于信赖域的瞬时最优半主动控制算法(TIOC) / MR阻尼器 / 地震响应 / 半主动控制

Key words

adjacent structures / trust-region based instantaneous optimal semi-active control algorithm (TIOC) / magnetorheological (MR) damper / seismic response / semi-active control

引用本文

导出引用
林 伟;陈尚鸿;祁 皑;张根明. TIOC半主动控制算法在相邻结构地震响应控制上的应用[J]. 振动与冲击, 2011, 30(12): 141-146
LIN Wei;CHEN Shang-hong;Qi Ai;ZHANG Gen-ming. Trust-region based instantaneous optimal semi-active control on earthquake excited adjacent structures[J]. Journal of Vibration and Shock, 2011, 30(12): 141-146

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