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Proceedings Paper

Simultaneous vibration control and energy harvesting using actor-critic based reinforcement learning
Author(s): Cheng Ning Loong; C. C. Chang; Elias G. Dimitrakopoulos
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Paper Abstract

Mitigating excessive vibration of civil engineering structures using various types of devices has been a conspicuous research topic in the past few decades. Some devices, such as electromagnetic transducers, which have a capability of exerting control forces while simultaneously harvesting energy, have been proposed recently. These devices make possible a self-regenerative system that can semi-actively mitigate structural vibration without the need of external energy. Integrating mechanical, electrical components, and control algorithms, these devices open up a new research domain that needs to be addressed. In this study, the feasibility of using an actor-critic based reinforcement learning control algorithm for simultaneous vibration control and energy harvesting for a civil engineering structure is investigated. The actor-critic based reinforcement learning control algorithm is a real-time, model-free adaptive technique that can adjust the controller parameters based on observations and reward signals without knowing the system characteristics. It is suitable for the control of a partially known nonlinear system with uncertain parameters. The feasibility of implementing this algorithm on a building structure equipped with an electromagnetic damper will be investigated in this study. Issues related to the modelling of learning algorithm, initialization and convergence will be presented and discussed.

Paper Details

Date Published: 15 March 2018
PDF: 10 pages
Proc. SPIE 10595, Active and Passive Smart Structures and Integrated Systems XII, 105952Q (15 March 2018); doi: 10.1117/12.2295304
Show Author Affiliations
Cheng Ning Loong, Hong Kong Univ. of Science and Technology (Hong Kong, China)
C. C. Chang, Hong Kong Univ. of Science and Technology (Hong Kong, China)
Elias G. Dimitrakopoulos, Hong Kong Univ. of Science and Technology (Hong Kong, China)


Published in SPIE Proceedings Vol. 10595:
Active and Passive Smart Structures and Integrated Systems XII
Alper Erturk, Editor(s)

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