Dynamically synergistic regulation mechanism for rotation energy harvesting

• Published in: Mechanical systems and signal processing 2022-04, Vol.169, p.108637, Article 108637
• Main Authors: Zhao, Lin-Chuan, Zou, Hong-Xiang, Wu, Zhi-Yuan, Gao, Qiu-Hua, Yan, Ge, Liu, Feng-Rui, Wei, Ke-Xiang, Zhang, Wen-Ming
• Format: Article
• Language: English
• Subjects: Adaptive-anastomotic barricade; Centrifugal force; Dynamic characteristics; Dynamic models; Dynamic regulation evolution; Dynamically synergistic regulation mechanism; Energy; Energy harvesting; Energy methods; Magnetic fields; Nanogenerators; Piezoelectric-triboelectric; Piezoelectricity; Rotation; Rotation energy harvesting; Stiffening; Stiffness; Wireless sensor networks
• ISSN: 0888-3270; 1096-1216
• DOI: 10.1016/j.ymssp.2021.108637

[Display omitted] •A dynamically synergistic regulation mechanism for rotation energy harvesting is proposed.•The adaptive-anastomotic barricades can both regulate the dynamic behavior and generate electricity.•The electromechanical coupling dynamic model of the proposed system is established.•The results show that the proposed harvester can harvest energy effectively in a wide speed range. To realize the sustainable energy supply of wireless sensor networks, a novel dynamically synergistic regulation mechanism is proposed for rotation energy harvesting under the guidance of the dynamic regulation evolution. The connotation of synergyincludes: (1) Nonlinear magnetic force and variable stiffness (centrifugal stiffening effect and penalty stiffness of adaptive-anastomotic barricades) synergistically regulate the dynamic behavior of the system; (2) The adaptive-anastomotic barricadesalso convertmechanical energy into electrical energy when regulating the dynamic behavior of the system, i.e., the triboelectric nanogeneratorsynergistically generateselectricity with piezoelectric energy harvesterin different states (collision and vibration) of the system, respectively.Based on the energy method of Hamiltonian principle, the electromechanical coupling dynamic model of the system is developed. The parameters analysis is performed for the discussion of dynamic characteristics and electrical performance of the system in a wide rotation speed range. The prototype is fabricated and the experiments under different conditions are carried out. The experimental data are in good agreement with the simulation results, which verifies the effectiveness of the theoretical model. The experimental results show that the proposed harvester can harvest energy effectively in a wide speed range of 0–1000 r/min. The peak-peak voltage and the average power for PEH and TENG can reach 122.1 V, 1600 μW; 774.3 V, 205.1 μW, respectively. The proposed dynamically synergistic regulation mechanism provides a new perspective to improve the comprehensive performance of the rotation energy harvester, which exhibits a promising application prospect in the self-powered IoT applications.