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本研究では片持ち梁型の磁歪式振動発電デバイスを用いて海洋域での波浪エネルギー利用に関する室内実験を行った前報に続き海岸・港湾構造物前面での重複波による波力利用を目的に室内発電実験を行ったその際振動発電デバイスには片持ち梁型を改良した字型振動発電デバイスを利用し外力の受動部を予め永久磁石で吸着しているデバイスから急速に脱着させることでデバイスに自由振動を励起させる方式さらに永久磁石を用いないでバネによって自由振動を励起させる方式の場合を検討を行った　実験の結果U字型振動発電デバイスでは従来の片持ち梁型発電デバイスに比べ共振振動時間が格段に長く永久磁石での脱着を利用した場合従来値の20倍を超える発電を実現できる事が明らかになった  In this study, laboratory experiment carried out to measure electric power generated by new vibrational power generator using piezoelectric materials. U-type shaping device is adopted in this new power generator, and two types of wave receiving, plate-type and buoy-type, in front of coastal and harbor structures are tested. As a result, it is possible to continue 10 times vibrational time compared to the time by previous power generator that adopted cantilever-type shaping devise. And it is also possible to generate 20 times electric power compared to the power by previous cantilever-type shaping devise

UTILIZATION OF WAVE ENERGY AT COASTAL AND HARBOR STRUTURES FRONT USING MAGNETOSTRIVTIVE VIBRATIONAL POWER GENERATOR