A piezoelectric motor using two orthogonal bending modes of a hollow cylinder

Koç, Burhanettin; Cagatay, Serra; Uchino, Kenji

doi:10.1109/58.996568

Cited by 151 publications

(74 citation statements)

References 11 publications

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“…The resulting motion is nothing but a travelling wave on this circular stator element. Ultrasonic motors using circular stator elements and operate the abovementioned principle found the first commercial applications in 80 s An ultrasonic motor developed at the Penn-State University is another example for the multi-mode excitation type rotary motors [34]. The two orthogonal modes in this motor are the two bending modes of a metal cylinder.…”

Section: One Driving Source (Driven Part Controls the Direction)mentioning

confidence: 99%

Piezoelectric Motors, an Overview

2016

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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.

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Section: One Driving Source (Driven Part Controls the Direction)mentioning

confidence: 99%

Piezoelectric Motors, an Overview

2016

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“…A small version of the tube motor has been tested [13] and the results are summarized in the next section. The optimization work is currently in progress and addresses a variety of other structures.…”

Section: Finite Element Analysis and Optimizationmentioning

confidence: 99%

Finite element modeling and optimization of tube-shaped ultrasonic motors

Bouchilloux¹,

Cagatay

Uchino

et al. 2003

SPIE Proceedings

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Recent developments in ultrasonic motor design have demonstrated that small size tube-shaped motors could be fabricated at low cost. Motors with diameters between 15 and 2.5mm have been fabricated and tested. The performance evaluation of these motors is still in progress, but have already shown promising results: the smallest ones exhibit noload speeds in the range of 70rad/s and blocked torques close to 0.9mN·m.In this paper, we review the operating principle of these devices and several implementation examples. Then, we show how the finite element method (ATILA) can be used, in combination with genetic optimization procedures, to design tube-shaped motors in various dimensions and for different performance objectives. Several design examples are presented and discussed.

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“…Examples of stators with coupled bending vibration include Cagatay, et al's brass cylinder (1.6 mm in diameter, 6 mm in length) with PZT plates glued to two flattened sides [38,42]. Each PZT excites the stator tip to rotate in a fixed orientation, thus two inputs are needed for the reverse rotor motion.…”

Section: Motor Designsmentioning

confidence: 99%

A brief review of actuation at the micro-scale using electrostatics, electromagnetics and piezoelectric ultrasonics

Liu

Friend

Yeo

2010

Acoust. Sci. & Tech.

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Though miniaturization and mass production via integrated circuit fabrication techniques have transformed our society, the methods have yet to be successfully applied to the generation of motion, and as a consequence the many potential benefits of microrobotics has yet to be realized. The characteristics of electrostatic, electromagnetic and piezoelectric transduction for generating motion at the micro scale is considered, employing scaling laws and a reasoned consideration of the difficulties in motor fabrication and design using each method. The scaling analyses show that electrostatic, electromagnetic and piezoelectric actuators all have comparable force scaling characteristics of F / L 2 ; if one employs permanent magnets, electromagnetic forces do not scale as F / L 4 . Though the torque, (, of piezoelectric ultrasonic motors scale rather poorly with ( / L 4 , they have the clear advantage of possessing torque amplitudes some two orders of magnitude larger than motors employing the other transduction schemes at the micro scale.

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A piezoelectric motor using two orthogonal bending modes of a hollow cylinder

Cited by 151 publications

References 11 publications

Piezoelectric Motors, an Overview

Piezoelectric Motors, an Overview

Finite element modeling and optimization of tube-shaped ultrasonic motors

A brief review of actuation at the micro-scale using electrostatics, electromagnetics and piezoelectric ultrasonics

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