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Broadband energy harvesting based on one-to-one internal resonance

Chinese Physics B 2020年第10期29卷 195-201页

作者：姜文安马新东韩修静陈立群毕勤胜 Faculty of Civil Engineering and Mechanics Jiangsu UniversityZhenjiang 212013China School of Science Harbin Institute of TechnologyShenzhen 518055China Department of Mechanics Shanghai UniversityShanghai 200072China

We design an electromechanical transducer harvesting system with one-to-one internal resonance that can emerge a broader spectrum vibrations. The novel harvester is composed of a Duffing electrical circuit coupled to a mobile rod, and the coupling between both components is realized via the electromagnetic force. Approximate analytical solutions of the electromechanical system are carried out by introducing the multiple scales analysis, also the nonlinear modulation equation for one-to-one internal resonance is obtained. The character of broadband harvesting performance are analyzed, the two peaks and one jump phenomenon bending to the right for variation of control parameters are observed. It is shown that an advanced bandwidth over a corresponding linear model that does not possess a modal energy interchange.

关键词： energy harvesting internal resonance broadband nonlinear modal interactions

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Improving energy harvesting by internal resonance in a spring-pendulum system

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Acta Mechanica Sinica 2020年第3期36卷 618-623页

作者： Wenan Jiang Xiujing Han Liqun Chen Qinsheng Bi Faculty of Civil Engineering and Mechanics Jiangsu UniversityZhenjiang 212013China School of Science Harbin Institute of TechnologyShenzhen 518055China Department of Mechanics Shanghai UniversityShanghai 200072China

This paper proposes a two-to-one internal resonance to widen the bandwidth of vibratory energy *** describe the improved characteristic,an electromagnetic spring-pendulum harvester is *** analytical solutions of the electromechanical coupled system are carried out by introducing the method of multiple scales,and the frequency response relationships of the displacement and the current are *** character of broadband harvesting performance is examined,the two peaks and double jump phenomena for variation of design parameters were *** effect of key control parameters on the harvesters bandwidth is considered,and the nonlinear behaviors of the harvester are validated via numerical results.

关键词： Energy harvesting Internal resonance Broadband nonlinear modal interactions

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