Model reference adaptive hierarchical control framework for shake table tests

The structural response under earthquake excitation can be simulated by shake table tests. However, the performance of the shake table is affected by the Control‐Structure Interaction (CSI) effect. In recent years, nonlinear control algorithms were developed to compensate for the CSI effect. In this...

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Veröffentlicht in:Earthquake engineering & structural dynamics Jg. 54; H. 1; S. 346 - 362
Hauptverfasser: Chen, Zhongwei, Yang, T. Y., Xiao, Yifei, Pan, Xiao, Yang, Wanyan
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Bognor Regis Wiley Subscription Services, Inc 01.01.2025
Schlagworte:
Adaptive algorithms
Adaptive systems
Algorithms
Control algorithms
Control methods
Control theory
Controllers
control‐structure interaction (CSI) effect
Earthquakes
Hydraulic equipment
Hydraulic systems
mass quantification
Model reference adaptive control
model reference adaptive hierarchical control (MRAHC) framework
Nonlinear control
nonlinear control algorithm
Nonlinear systems
Nonlinearity
Performance evaluation
Proportional integral derivative
Reference signals
Seismic activity
Seismic response
shake table test
Shake table tests
Structural response
ISSN:0098-8847, 1096-9845
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Zusammenfassung:The structural response under earthquake excitation can be simulated by shake table tests. However, the performance of the shake table is affected by the Control‐Structure Interaction (CSI) effect. In recent years, nonlinear control algorithms were developed to compensate for the CSI effect. In this study, a model reference adaptive control algorithm, named model reference adaptive hierarchical control (MRAHC) framework, is presented. MRAHC consists of a high (adaptive) and low (loop‐shaping) level controller. The high‐level (adaptive) controller develops the control algorithm on the system level, which directedly considers the inherent nonlinearity of the test specimen and the CSI effect. While the low‐level (loop‐shaping) controller develops the control algorithm to regulate the hydraulic system and make sure it can follow the reference signal generated by the high‐level (adaptive) controller. MRAHC offers many advantages including direct compensation to the structural nonlinearity and the ability to handle the CSI effect. In addition, it allows users to quantify the mass of the test specimens without measurement. To evaluate the performance of the MRAHC method, shake table tests with different upper structure masses were carried out. The performance of the MRAHC was compared with the direct loop‐shaping control method (LC) and the Proportional‐Integral‐Differentiation control method (PID). The results show that the MRAHC can achieve better acceleration tracking compared to the LC and PID control methods. Hence, the MRAHC can be used as an effective nonlinear controller for shake table tests.
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ISSN:0098-8847
1096-9845
DOI:10.1002/eqe.4256