The charactcristics of wind power generatien by the flexible sheet tlutter were investigated . In the present experiment . the effects of sheet length and wind velocity are examined . The sheet displacement , Ihe angular f掩 quency and the generated power were measured tempora 】 】 y to investigate the characteristics of power generation. In addition , the high − speed camera was used to obtain the sheet behavior , especially medes and mode change . Power generation efficiency was reugh ] y as a

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... atio of the measured electric power to the rotational kinetic energy calculated based on the moment of inertia , the rotational angu 藍 ar amplitude and the angular frequency . The results show that the retational angular amplitude has the largest effect on the generated power . Key " ' ords ; Flu帆er , Wind − power generation , Flexlble sheel