An improved equivalent force control algorithm for hybrid seismic testing of nonlinear systems

被引：8
|
作者：
Wang, Zhen [1 ,2 ,3 ]
Wu, Bin [1 ,2 ,3 ]
Xu, Guoshan [1 ,2 ,3 ]
Bursi, Oreste S. [4 ]
机构：
[1] Harbin Inst Technol, Minist Educ, Key Lab Struct Dynam Behav & Control, Harbin 150090, Heilongjiang, Peoples R China
[2] Harbin Inst Technol, Key Lab Prevent & Mitigat Civil Engn Disasters, Minist Ind & Informat Technol, Harbin 150090, Heilongjiang, Peoples R China
[3] Harbin Inst Technol, Sch Civil Engn, Harbin 150001, Heilongjiang, Peoples R China
[4] Univ Trento, Dept Civil Environm & Mech Engn, Via Mesiano 77, I-38123 Trento, Italy
来源：
STRUCTURAL CONTROL & HEALTH MONITORING | 2018年 / 25卷 / 02期
基金：
中国博士后科学基金; 黑龙江省自然科学基金; 中国国家自然科学基金;
关键词：
equivalent force control method; implicit integration algorithm; iteration; pseudodynamic testing; slippage; varying sampling number; IMPLICIT TIME INTEGRATION; PSEUDODYNAMIC TEST; COMPENSATION; PERFORMANCE; DISSIPATION; SIMULATION; DYNAMICS;
D O I：
10.1002/stc.2076
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The equivalent force control (EFC) algorithm is a hybrid seismic testing method based on both an implicit integration algorithm and force feedback control. As it performs the computation of the numerical substructure with a fixed sampling number and some evaluations are not necessary, the EFC method is believed to be time-consuming for seismic testing of nonlinear systems with complicated numerical substructure model. In order to tackle this problem, the EFC method with varying sampling number (vEFC) has been conceived. The analysis of the vEFC method has shown that 2 traditional pseudodynamic testing (PDT) variants on the basis of implicit time integration schemes and numerical iteration, that is, the IPDT1 method and the IPDT2 method, can be recovered from the vEFC method. Moreover, the advantages of the vEFC method, such as fast response rate and compensation for control errors and possible slippage, are demonstrated.
引用
收藏
页数：19
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