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A Traveling Wave Ultrasonic Motor Based on Piezoelectric Stack Drive

A piezoelectric stack, ultrasonic motor technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the lack of traveling wave ultrasonic motor design solutions, limitations Ultrasonic motor application range and other issues, to achieve the effect of simple and compact motor structure, widening application scope and fast response speed

Active Publication Date: 2019-01-29
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, in the current design, the piezoelectric stack of the motor is generally applied to the non-common type piezoelectric actuator, and the resonant traveling wave ultrasonic motor driven by the piezoelectric stack is rarely used, so there is a lack of application for the traveling wave ultrasonic motor. The design of the motor limits the application range of the current ultrasonic motor

Method used

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  • A Traveling Wave Ultrasonic Motor Based on Piezoelectric Stack Drive
  • A Traveling Wave Ultrasonic Motor Based on Piezoelectric Stack Drive
  • A Traveling Wave Ultrasonic Motor Based on Piezoelectric Stack Drive

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Embodiment Construction

[0016] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Hereinafter, embodiments of the present invention will be described in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention. Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refe...

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Abstract

An embodiment of the invention discloses a traveling-wave ultrasonic motor based on a piezoelectric stack driving mode and relates to the technical field of piezoelectric precise actuation. The traveling-wave ultrasonic motor is ensured to be simple and compact in structure, high in response speed and easy to realize, and application range of the traveling-wave ultrasonic motor in the field of precise control. The traveling-wave ultrasonic motor is driven by piezoelectric stacks 5, the inner side face of a stator 2 is a driving face of a taper face, the side face of a rotor is a taper face tangential with the stator 2, inclined grooves which are mutually staggered are uniformly distributed in the taper face of the stator 2, and the inclined grooves are identical in depth; an annular groove is formed in the bottom of the stator 2, the piezoelectric stack 5 is arranged in the annular groove, one side of the piezoelectric stack 5 is bonded on the stator 2, a bonding face of each piezoelectric stack 5 and the stator 2 is processed into a plane, and the piezoelectric stacks 5 are uniformly embedded inside the stator 2.

Description

technical field [0001] The invention relates to the technical field of piezoelectric precision actuation, in particular to a traveling wave ultrasonic motor based on a piezoelectric stack drive mode. Background technique [0002] Ultrasonic motors use the inverse piezoelectric effect of piezoelectric materials to convert electrical energy into mechanical energy. Compared with traditional electromagnetic motors, ultrasonic motors have many advantages such as compact structure, high energy density, easy miniaturization, and fast motor response speed. They are called the current mainstream. Developed motor form. [0003] In the current common scheme, the stator of the motor is an elastic composite body of a specific shape composed of piezoelectric ceramics and metal elastomers. Among them, piezoelectric ceramics are excited by AC signals of ultrasonic frequency, and then mechanical vibrations of the same frequency are excited in the stator elastic body. The amplitude of the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/08H02N2/04
CPCH02N2/04H02N2/08
Inventor 杨颖邱建敏金家楣王一平
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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