Please use this identifier to cite or link to this item: http://dx.doi.org/10.25673/35018
Title: Optimal control of vibration-based micro-energy harvesters
Author(s): Le, Thuy Thi-Thien
Jost, FelixLook up in the Integrated Authority File of the German National Library
Sager, SebastianLook up in the Integrated Authority File of the German National Library
Issue Date: 2020
Extent: 1 Online-Ressource (18 Seiten, 1,1 MB)
Type: Article
Language: English
Publisher: Springer, Dordrecht
URN: urn:nbn:de:gbv:ma9:1-1981185920-352204
Subjects: Optimal control
Pontryagin’s maximum principle
Switching function
Energy harvesting
Power optimization
Abstract: We analyze the maximal output power that can be obtained from a vibration energy harvester. While recent work focused on the use of mechanical nonlinearities and on determining the optimal resistive load at steady-state operation of the transducers to increase extractable power, we propose an optimal control approach. We consider the open-circuit stiffness and the electrical time constant as control functions of linear two-port harvesters. We provide an analysis of optimal controls by means of Pontryagin’s maximum principle. By making use of geometric methods from optimal control theory, we are able to prove the bang–bang property of optimal controls. Numerical results illustrate our theoretical analysis and show potential for more than 200% improvement of harvested power compared to that of fixed controls.
URI: https://opendata.uni-halle.de//handle/1981185920/35220
http://dx.doi.org/10.25673/35018
Open Access: Open access publication
License: (CC BY 4.0) Creative Commons Attribution 4.0(CC BY 4.0) Creative Commons Attribution 4.0
Journal Title: Journal of optimization theory and applications
Publisher: Springer
Publisher Place: Dordrecht
Volume: 179
Issue: 2018
Original Publication: 10.1007/s10957-018-1250-4
Page Start: 1025
Page End: 1042
Appears in Collections:Fakultät für Mathematik (OA)

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