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Keywords = linear oscillatory actuator

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8 pages, 3200 KiB  
Article
A New Linear Oscillatory Actuator with Variable Characteristics Using Two Sets of Coils
by Fumiya Kitayama, Katsuhiro Hirata, Noboru Niguchi and Masashi Kobayashi
Sensors 2016, 16(3), 377; https://doi.org/10.3390/s16030377 - 15 Mar 2016
Cited by 13 | Viewed by 4852
Abstract
Nowadays, electromagnetic linear oscillatory actuators are used as vibration control devices because of their high controllability. However, there is a problem that thrust and vibration are small at a wide drive frequency range. In order to improve this problem, we propose a new [...] Read more.
Nowadays, electromagnetic linear oscillatory actuators are used as vibration control devices because of their high controllability. However, there is a problem that thrust and vibration are small at a wide drive frequency range. In order to improve this problem, we propose a new linear oscillatory actuator that can easily change its own characteristics by using two sets of coils. Through finite element analysis, large vibration was observed at 100 Hz in a series connection, and large vibration and high thrust were observed at 70 Hz and 140 Hz in a parallel connection. From these results, we verified that the actuator had two different characteristics due to switchable connections, and could generate high thrust and large vibration by smaller currents at a wide drive frequency range. Full article
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18 pages, 6296 KiB  
Review
Piezoelectric Motors, an Overview
by Karl Spanner and Burhanettin Koc
Actuators 2016, 5(1), 6; https://doi.org/10.3390/act5010006 - 26 Feb 2016
Cited by 124 | Viewed by 19741
Abstract
Piezoelectric motors are used in many industrial and commercial applications. Various piezoelectric motors are available in the market. All of the piezoelectric motors use the inverse piezoelectric effect, where microscopically small oscillatory motions are converted into continuous or stepping rotary or linear motions. [...] Read more.
Piezoelectric motors are used in many industrial and commercial applications. Various piezoelectric motors are available in the market. All of the piezoelectric motors use the inverse piezoelectric effect, where microscopically small oscillatory motions are converted into continuous or stepping rotary or linear motions. Methods of obtaining long moving distance have various drive and functional principles that make these motors categorized into three groups: resonance-drive (piezoelectric ultrasonic motors), inertia-drive, and piezo-walk-drive. In this review, a comprehensive summary of piezoelectric motors, with their classification from initial idea to recent progress, is presented. This review also includes some of the industrial and commercial applications of piezoelectric motors that are presently available in the market as actuators. Full article
(This article belongs to the Special Issue Piezoelectric Actuators)
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