Real-time Substructure Testing with Equivalent Force Control Method and its Application to Smart Damping

摘要：

The equivalent force control(EFC)method replaces the numerical iteration with a force feedback control loop for solving the nonlinear equation of motion in a real-time substructure test(RST)using implicit time integration algorithm.In this paper the actual tests with the spring element as the physical substructure are performed to further validate the EFC method.The numerical and experimental results show that the EFC method is very effective if the controller is properly designed.Then,RSTing with EFC was applied to evaluate the performance of JZ20-2NW offshore platform with semi-active magnetorheological(MR)fluid dampers.For comparison,the central difference method with conventional displacement control was also considered in the test.The simulation results validate the stability and accuracy of the EFC method.The results also show that the seismic and ice induced vibration of the offshore platform is effectively controlled with MR dampers.

关键词： Real-time substructure tests equivalent force control smart damping implicit integration pseudodynamic test

作者: G. Xu B. Wu

作者单位: School of Civil Engineering,Harbin Institute of Technology,Harbin,150090,China

会议类型: 国际会议

会议名称: The World Forum on Smart Materials and Smart Structures Technology(SMSST07)(2007年世界智能材料与智能结构技术论坛)

会议地点: 重庆·南京

会议语种:英文

在线出版日期: 2007-05-01（万方平台首次上网日期，不代表论文的发表时间）