Study on the interaction between shaking table and eccentric load

Autor: Juke Wang, Xiaojun Li, Aiwen Liu, Su Chen, Lei Fu, Liguo Jin
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Journal of Low Frequency Noise, Vibration and Active Control, Vol 43 (2024)
Druh dokumentu: article
ISSN: 1461-3484
2048-4046
14613484
DOI: 10.1177/14613484231202813
Popis: The control-structure interaction (CSI) between shaking table and eccentric load is one of the most important reasons causing the accuracy degradation of shaking table test. At present, the eccentric ratio (ER) of load and the coupling between actuators pose challenges to study the CSI. Thus, this paper establishes an analytical transfer function matrix of a shaking table and eccentric load. Based on the transfer function matrix, a comprehensive study is conducted to analyse the CSI effect under different eccentric ratio conditions. The analysis proves the influence of the CSI, and the CSI amplifies the actuator coupling more than 22 times at 20.00 Hz. Furthermore, a real-time CSI compensation strategy considering the actuator coupling is proposed. With the adopting of the proposed strategy, the coupling between two actuators is fully eliminated, and the correlation coefficients of ground motion records of two actuators are improved by 14.75% and 5.48%, respectively.
Databáze: Directory of Open Access Journals
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