基于极点配置算法的黏滞阻尼器优化设计

为克服常用极点配置算法的局限性,提出基于实模态空间解耦的极点配置算法,该算法求得的反馈增益矩阵中位移反馈增益始终为零,符合黏滞阻尼器特性。基于该反馈增益矩阵采用等效最优控制法进行参数优化设计,并提出基于阻尼器耗散能量的位置优化设计方法。在上述研究的基础上给出了黏滞阻尼器优化设计流程,并以某20层实际结构进行数值模拟,分析结果表明,被动控制系统性能与对应主动控制系统的性能相近,达到预期效果,验证该设计流程的有效性与正确性。

Optimal design of viscous dampers based on the pole assignment method

After analyzing the limitations of the commonly used pole assignment method,the pole assignment method based on decoupled real modal is proposed in this paper.The displacement vectors in the feedback gain matrix obtained by the given pole assignment method keeps in zero for the characteristics of viscous dampers.Based on the feedback gain,the equivalent optimal control method is applied in optimal design for parameters of viscous dampers.The method based on the damper’s dissipated energy that was used in optimal design for location was proposed.The process of optimal design for viscous dampers is conducted.The numerical simulation of a 20-story steel frame structure installed with viscous dampers is used to verified the similarity of the performances and the effectively of the passive-control system and corresponding active-control system.It proves that the process of design is effective and rational.