Adaptive time delay compensation method for real-time hybrid test based on additive error model

被引：0
|
作者：
Huang W. [1 ]
Ning X. [1 ,2 ,3 ]
Wang Z. [4 ]
Xu X. [5 ]
机构：
[1] College of Civil Engineering, Huaqiao University, Xiamen
[2] Fujian Provincial Key Lab for Intelligent Infrastructure and Monitoring, Huaqiao University, Xiamen
[3] CEA Key Lab of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration ( CEA), Harbin
[4] School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan
[5] Hubei Branch, China Construction Second Engineering Bureau Co.,Ltd.,, Wuhan
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2023年 / 42卷 / 07期
关键词：
additive error model; feedforward control; real-time hybrid test(RTHT); time-delay compensation;
D O I：
10.13465/j.cnki.jvs.2023.07.007
中图分类号：
学科分类号：
摘要：
Real time hybrid test is an effective method to evaluate dynamic performance of structures, but its accuracy and stability are seriously affected by time-varying delay caused by dynamic characteristics of transmission system and those of physical specimens as well as their interaction. Here, aiming at this problem, an adaptive time delay compensation method based on the additive error model was proposed. With this method, a system composed of transfer system and physical specimens could be decomposed into a nominal model and an additive error model. The inverse of nominal model was taken as a feedforward controller to eliminate most of the system' s time delays,and an adaptive compensator was designed based on the additive error model to further eliminate residual time delays. The study showed that the proposed method can effectively improve the analog accuracy of real-time hybrid test, significantly reduce the dependence of time delay compensator on adaptive law, and reveal stronger robustness. © 2023 Chinese Vibration Engineering Society. All rights reserved.
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页码：46 / 53
页数：7
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