Wang, HairenChen, ZiguangYang, ShengfengHu, LinHu, Ming2019-02-222019-02-222018-04Wang, H., Chen, Z., Yang, S., Hu, L., & Hu, M. (2018). Analysis of a discrete-layout bimorph disk elements piezoelectric deformable mirror. Journal of Astronomical Telescopes, Instruments, and Systems, 4(2), 029001. https://doi.org/10.1117/1.JATIS.4.2.029001https://hdl.handle.net/1805/18446We 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.enPublisher Policydeformable mirrorcircular flexural-mode piezoelectric actuatorelectromechanical modelArticle