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Recurve piezoelectric-strain-amplifying actuator architecture

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2 Author(s)
J. D. Ervin ; Dept. of Mech. Eng. & Appl. Mech., Michigan Univ., Ann Arbor, MI, USA ; D. Brei

Various external and internal leverage devices have been developed to amplify strain; however, these devices are commonly inefficient due to transmission losses and can be difficult to pack into constrained application volumes. A Recurve actuator architecture has been designed which amplifies direct material strains and allows for construction of highly compact, high-energy-density actuator arrays. The Recurve architecture enables arrays that can be tailored to produce specific force and displacement output and can be configured in a variety of ways to make efficient use of available design space. This paper describes a Recurve actuator architecture and presents a quasi-static model relating voltage, force, and deflection along with experimental results for fundamental Recurve actuator elements

Published in:

IEEE/ASME Transactions on Mechatronics  (Volume:3 ,  Issue: 4 )