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Piezoelectric Ultrasonic Motors
Journal of Intelligent Material Systems and Structures, 1995Piezoelectric ultrasonic motors are a new type of actuator. They are characterized by high torque at low rotational speed, simple mechanical design and good controllability. They also provide a high holding torque even if no power is applied. Compared to electromagnetic actuators the torque per volume ratio of piezoelectric ultrasonic motors can be ...
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Ultrasonic motors with polymer-based vibrators
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2015With their characteristics of low density and elastic moduli, polymers are promising materials for making ultrasonic motors (USMs) with high energy density. Although it has been believed for a long time that polymers are too lossy to be applied to high-amplitude vibrators, there are several new polymers that exhibit excellent vibration characteristics.
Jiang Wu +3 more
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Design and implementation of spherical ultrasonic motor
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2009We present a mechanical design and implementation of spherical ultrasonic motor (SUSM) that is an actuator with multiple rotational degrees of freedom (multi-DOF). The motor is constructed of 3 annular stators and a spherical rotor and is much smaller and simpler than conventional multi-DOF mechanisms such as gimbals using servomotors.
Tomoaki, Mashimo +2 more
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Novel method for driving the ultrasonic motor
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2002This paper reports a novel driving method for an annular plate-type ultrasonic motor. Instead of the direct current/alternating current (DC/AC) converter type driver using conventional electromagnetic transformer, a compact disc-type piezoelectric transformer is used to obtain high voltage output for driving the ultrasonic motor.
Hyeoung woo, Kim +4 more
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An Introduction to Ultrasonic Motors
1993Abstract The ultrasonic motor, invented in 1980, utilizes the piezoelectric effect in the ultrasonic frequency range to provide the motive force. (In conventional electric motors the motive force is electromagnetic). The result is a motor with unusually good low-speed high-torque and power-to-weight characteristics.
Toshiiku Sashida, Takashi Kenjo
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Development and applications of linear ultrasonic motors
2016 13th International Conference on Ubiquitous Robots and Ambient Intelligence (URAI), 2016This paper proposed structural design methods for the development of high-efficiency linear ultrasonic motors (LUMs) that can be applied in robotic fields. A continuous variable cross-section Langevin vibrator was adopted for higher vibration efficiency of the stator.
Zhiyuan Yao +4 more
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Prototyping of a Rotary/Linear Ultrasonic Motor
2005 IEEE Conference on Emerging Technologies and Factory Automation, 2006The object of this research is to design and prototype a linear/rotary ultrasonic motor based upon multi-mode resonance behaviors for a piezoelectrically excited driver structure system. The whole ultrasonic motor system includes a pair of piezoactuator-equipped driver rods, a linear/rotary driven shaft, and a set of high-voltage power stages for ...
Fu-Shin Lee +2 more
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New type of piezoelectric ultrasonic motor
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1989The authors describe a newly developed motor concept which allows a bidirectional piezoelectric ultrasonic motor to be operated with only a single voltage feed and thus only one power amplifier. The motor concept is based on the superposition of a longitudinal and a flexural oscillation of a rod-shaped resonator. In a way analogous to the generation of
M, Fleischer, D, Stein, H, Meixner
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A vibrators alternation stepping ultrasonic motor
Ultrasonics, 2006A new concept of a vibrators alternation stepping ultrasonic motor, based on longitudinal vibrations of rectangular Langevin resonators, is presented. The new motor fed by a single-phase resource without feedback is capable of bi-directions step displacements without accumulative displacement error.
Jiamei, Jin, Chunsheng, Zhao
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2011
There are many types of motors based on the piezoelectric effect (also called piezoelectric motors). Besides those discussed in previous chapters, there are many other new types being studied, including a non-contact type ultrasonic motor, a piezoelectric motor using clutch, a linear surface acoustic wave motor, a vacuum type ultrasonic motor, an ...
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There are many types of motors based on the piezoelectric effect (also called piezoelectric motors). Besides those discussed in previous chapters, there are many other new types being studied, including a non-contact type ultrasonic motor, a piezoelectric motor using clutch, a linear surface acoustic wave motor, a vacuum type ultrasonic motor, an ...
openaire +1 more source