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16 January 2003 Design and fabrication of a large vertical travel silicon inchworm microactuator for the Advanced Segmented Silicon Space Telescope
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Abstract
Future concepts for ultra-large lightweight space telescopes include the telescopes with segmented silicon mirrors. This paper describes a proof-of-concept inchworm actuator designed to provide nanometer resolution, high stiffness, large output force, long travel range, and compactness for ultraprecision positioning applications in space. A vertically actuating inchworm microactuator is proposed to achieve large actuation travel by incorporating compliant beam structures within a silicon wafer. An inchworm actuator unit consists of a piezoelectric stack actuator, a driver, a pair of holders, a slider, and a pair of polymer beams connected to a centrally clamped flexure beam. Deep reactive ion etch experiments have been performed for constructing the actuator.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Eui-Hyeok Yang, Richard G. Dekany, and Stephen Padin "Design and fabrication of a large vertical travel silicon inchworm microactuator for the Advanced Segmented Silicon Space Telescope", Proc. SPIE 4981, MEMS Components and Applications for Industry, Automobiles, Aerospace, and Communication II, (16 January 2003); https://doi.org/10.1117/12.476282
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