압전 진동 에너지 수확 장치의 전기 유발 감쇠 특성 및 최대 전력 발생 조건
기관명 | NDSL |
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저널명 | 한국소음진동공학회논문집 = Transactions of the Korean society for noise and vibration engineering |
ISSN | 1598-2785,2287-5476 |
ISBN |
저자(한글) | |
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저자(영문) | |
소속기관 | |
소속기관(영문) | |
출판인 | |
간행물 번호 | |
발행연도 | 2015-01-01 |
초록 | The piezoelectric coupling in piezoelectric vibration energy harvesters with load resistance induces electrical damping as well as increase in the system stiffness. Starting from analytically deriving the explicit relations through governing equations in the frequency domain, this work identifies the characteristics of the electrically induced damping mechanism and shows that the electrically induced damping serves as a structural hysteretic damping on condition that a piezoelectric vibration energy harvester is excited at its short-circuit resonant frequency and its load resistor is optimally impedance- matched at the same time. Finally, it is analytically verified that the equivalence of a mechanical and an electrically induced damping ratio is required for the maximum power generation at a load resistor, which was claimed in some literature. |
원문URL | http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=03553784&target=NART&cn=JAKO201525961565841 |
첨부파일 |
과학기술표준분류 | |
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ICT 기술분류 | |
DDC 분류 | |
주제어 (키워드) | 진동 에너지 수확,압전,전기 유발 감쇠,최대 전력,구조 이력 감쇠,Vibration Energy Harvesting,Piezoelectricity,Electrically Induced Damping,Maximum Power,Structural Hysteretic Damping |