Browsing by Subject "circular flexural-mode piezoelectric actuator"

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    Analysis of a discrete-layout bimorph disk elements piezoelectric deformable mirror
    (SPIE, 2018-04) Wang, Hairen; Chen, Ziguang; Yang, Shengfeng; Hu, Lin; Hu, Ming; Mechanical and Energy Engineering, School of Engineering and Technology
    We introduce a discrete-layout bimorph disk elements piezoelectric deformable mirror (DBDEPDM), driven by the circular flexural-mode piezoelectric actuators. We formulated an electromechanical model for analyzing the performance of the new deformable mirror. As a numerical example, a 21-actuators DBDEPDM with an aperture of 165 mm was modeled. The presented results demonstrate that the DBDEPDM has a stroke larger than 10  μm and the resonance frequency is 4.456 kHz. Compared with the conventional piezoelectric deformable mirrors, the DBDEPDM has a larger stroke, higher resonance frequency, and provides higher spatial resolution due to the circular shape of its actuators. Moreover, numerical simulations of influence functions on the model are provided.