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Actuation Using Piezoelectric Materials: Application in Augmenters, Energy Harvesters, and MotorsPiezoelectric actuators are used in many manipulation, movement, and mobility applications as well as transducers and sensors. When used at the resonance frequencies of the piezoelectric stack, the actuator performs at its maximum actuation capability. In this Space Grant internship, three applications of piezoelectric actuators were investigated including hammering augmenters of rotary drills, energy harvesters, and piezo-motors. The augmenter shows improved drill performance over rotation only. The energy harvesters rely on moving fluid to convert mechanical energy into electrical power. Specific designs allow the harvesters more freedom to move, which creates more power. The motor uses the linear movement of the actuator with a horn applied to the side of a rotor to create rotational motion. Friction inhibits this motion and is to be minimized for best performance. Tests and measurements were made during this internship to determine the requirements for optimal performance of the studied mechanisms and devices.
Document ID
20150004592
Document Type
Other
External Source(s)
Authors
Hasenoehrl, Jennifer (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
April 8, 2015
Publication Date
August 1, 2012
Subject Category
Mechanical Engineering
Solid-State Physics
Distribution Limits
Public
Copyright
Other
Keywords
drills
piezo-motors
augmenter of drills
actuators