Nano Archive

Hybrid linear microactuators and their control models for mirror shape correction

Shcheglov, Kirill and Jiang, Xiaoning and Toda, Risaku and Chang, Zensheu and Yang, Eui-Hyeok (2009) Hybrid linear microactuators and their control models for mirror shape correction. Journal of Micro-Nano Mechatronics, 4 (4). pp. 159-167. ISSN 1865-3928 (Print) 1865-3936 (Online)

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Official URL: http://www.springerlink.com/content/e53225u78l67rt...

Abstract

Future space-based imaging systems demand ultra-lightweight mirrors, which would involve a large number of actuators to provide the needed surface correction. These lightweight actuators are required to be integrated with the mirrors to avoid a significant increase in overall areal mass density. This paper presents the fabrication and testing of a linear microactuator and the modeling of an actuated mirror composed of such lightweight actuators. The linear microactuator is driven by a combination of a piezoelectric actuator block and electrostatic comb drive units. A full nonlinear optimization model of a mirror lattice was developed to simulate a lightweight primary with embedded microactuators, which allows for an arbitrarily connected lattice with connector elements having an arbitrary stiffness and actuation response. The modeling yielded a high precision estimation of the mirror shape correction.

Item Type:Article
Subjects:Engineering > Nanotechnology applications in mechanical engineering
ID Code:7833
Deposited By:M T V
Deposited On:30 Nov 2009 12:24
Last Modified:30 Nov 2009 12:24

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