Study on Structure Property of Cantilever Piezoelectric Vibration Generator

• Main Authors: Yan Zhen, He Qing, Liu Junfeng
• Format: Article
• Language: English
• Published: IFSA Publishing, S.L. 2014-08-01
• Series: Sensors & Transducers
• Subjects: Wireless sensor network; Micro power; Piezoelectric vibration generator; Generating capacity.
• Online Access: http://www.sensorsportal.com/HTML/DIGEST/august_2014/Vol_177/P_2341.pdf

For increasing generating capacity of cantilever piezoelectric vibration generator with limited volume, influence rule of structure parameter to generating capacity of unimorph, bimorph in series type and bimorph in parallel type piezoelectric vibration generator are analyzed by finite element modeling and experiment. The results indicate that in low frequency work environment, bimorph in series type beam with small thickness ratio should be firstly chosen for getting larger output voltage; bimorph beam should be preferred at the same material and structural parameter for getting larger output power.