機械共振式の圧電振動発電に関する基礎研究(機械力学,計測,自動制御)

概要

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Rotating machinery is widely used in the industrial plant, for example, power plant, chemical plant, mass-production plant and so on. In order to ensure safety operation of the rotating machinery, vibration condition monitoring of the machinery can play a crucial role. In this study, the vibration power generator of the piezoelectric bimorph cantilever beam was proposed for vibration condition monitoring applications of rotating machinery. Proposed piezoelectric vibration power generator consisted of Macro-Fiber Composite(MFC) actuator which is flexible and durable piezocomposite type actuator. The mechanical resonant frequency of the cantilever beam was tuned to the rotating speed of a typical 4-pole induction motor driven rotating machine. This study evaluates the power generation performance of the proposed power generator through mumerical simulations as well as experiment when subjected to vibration source input magnitude of 0.71mm/s(RMS value of velocity) at the resonant frequency of the cantilever beam by using the electrodynamic shaker. The experimental results of the vibration power generator were good agreement with the numerical simulation results using 2-dof model of the vibration power generator.
2010-01-25