Energy harvesting using semi-active control
Energy harvesting using semi-active control
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DOI：
10.1016/j.jsv.2013.06.005
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发表时间：
2013-11
影响因子：
4.7
通讯作者：
F. Monaco;M. G. Tehrani;S. Elliott;E. Bonisoli;S. Tornincasa
中科院分区：
文献类型：
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作者：
F. Monaco;M. G. Tehrani;S. Elliott;E. Bonisoli;S. Tornincasa
本文介绍了半主动控制的应用优化收获的电力机电能量收割机。一个时间周期阻尼器，定义的傅立叶级数，引入能量收集，以提高设备的性能。基于谐波平衡法，推导了系统的传输率和平均吸收功率的解析解。半主动模型的系数被优化以最大化所收获的功率。从最佳的周期性时变阻尼器在一个特定的频率的收获功率进行比较，并示出大于从一个最佳的被动阻尼器和半主动开关阻尼器不仅在该特定的频率，但也在其他频率。此外，优化的周期性时变阻尼器的性能也比较了与任意半主动时变阻尼器，它具有相同的传递率在共振。进行优化，以最大限度地提高在频率范围内的功率和最佳阻尼器作为激励频率的函数导出。数值结果与解析方法进行了验证。
This paper presents the application of semi-active control for optimising the power harvested by an electro-mechanical energy harvester. A time-periodic damper, defined by a Fourier series, is introduced for energy harvesting in order to increase the performance of the device. An analytical solution for the transmissibility and the average absorbed power is derived based on the method of harmonic balance. The coefficients of the semi-active model are optimised to maximise the harvested power. The harvested power from the optimum periodic time-varying damper at a particular frequency is compared and is shown to be greater than that from an optimum passive damper and a semi-active on–off damper not only at that particular frequency but also at other frequencies. In addition, the performance of the optimised periodic time-varying damper is also compared with an arbitrary semi-active time-periodic damper, which has the same transmissibility at resonance. An optimisation is carried out to maximise the power in a frequency range and the optimum damper is derived as a function of the excitation frequency. The numerical results are validated with the analytical approach.