Title :
A camera positioner driven by muscle-like actuation
Author :
Schultz, Joshua ; Ueda, Jun
Author_Institution :
Woodruff Sch. of Mech. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
Numerous camera positioning mechanisms exist, but their actuation has little in common with the human eye whose motion they are meant to replicate. Piezoelectric cellular actuators, a novel biologically inspired technology, have much more in common with the recti muscles that position the human eye than traditional actuators have. This work explains how to select multi-layer nested compliant strain amplification mechanisms that can scale up the displacement of piezoelectric stacks to the range of the ocular positioning system. The resulting actuators are deployed on a working single degree-of-freedom device.
Keywords :
cameras; piezoelectric actuators; position control; biologically inspired technology; camera positioning mechanisms; human eye; multilayer nested compliant strain amplification mechanisms; muscle-like actuation; ocular positioning system; piezoelectric cellular actuators; piezoelectric stacks; recti muscles; Actuators; Cameras; Force; Geometry; Humans; Muscles; Strain;
Conference_Titel :
Biomedical Robotics and Biomechatronics (BioRob), 2012 4th IEEE RAS & EMBS International Conference on
Conference_Location :
Rome
Print_ISBN :
978-1-4577-1199-2
DOI :
10.1109/BioRob.2012.6290308