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Planar rotary motor using ultrasonic horns

Show simple item record Sherrit, Stewart Bao, Xiaoqi Badescu, Mircea Chang, Zensheu Geiyer, Daniel Allen, Phillip Ostlund, Patrick Bar-Cohen, Yoseph 2012-03-12T17:25:02Z 2012-03-12T17:25:02Z 2011-03-06
dc.identifier.citation 18th Annual Symposium on Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring, San Diego, CA, March 6-10, 2011. en_US
dc.identifier.clearanceno 11-0771
dc.description.abstract One of the first piezoelectric motor designs with significant rotational speeds was outlined by Barth. This device used extensional piezoelectric elements to produce a time varying force at a distance r from the center of a centrally supported disk. These extensional actuators produced micro-steps at a high frequency with the end result being macroscopic rotation of the disk and high torque. The rotation direction is controlled by the choice of the actuators and the direction of the extension about the rotor center. A recent advancement in producing pre-stressed power ultrasonic horns using flexures allows for the development of high torque ultrasonic motors based on the Barth’s idea that can be fabricated in a 2D plate or in more complicated 3D structures. In addition to the pre-stress flexures the design also allows for the use of flexures to produce the rotor/horn normal force. The torque can be controlled by the number of actuators in the plane and the amplitude of the normal force. This paper will present analytical and experimental results obtained from testing prototype planar motors. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2011. en_US
dc.subject Piezoelectric en_US
dc.subject planar structures en_US
dc.subject rotary motion en_US
dc.subject ultrasonic impacts. en_US
dc.title Planar rotary motor using ultrasonic horns en_US
dc.type Preprint en_US
dc.subject.NASATaxonomy Electronics and Electrical Engineering en_US

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