Thin reverse type ultrasonic motor

An ultrasonic motor and sheet technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve the problem of non-adjustable rotation direction, heating of ceramic stack, and easy damage cost and other problems, to achieve the effect of low space occupancy, high output speed and compact structure

Active Publication Date: 2016-10-26
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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AI Technical Summary

Problems solved by technology

Torsional motors can be divided into two categories, modal conversion type and non-modal conversion type; among them, the piezoelectric ceramic sheet structure of the non-modal conversion longitudinal torsion motor is complex, easily damaged and the cost is too high
Howe

Method used

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  • Thin reverse type ultrasonic motor
  • Thin reverse type ultrasonic motor
  • Thin reverse type ultrasonic motor

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Embodiment Construction

[0021] 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.

[0022] The embodiment of the present invention provides a torsional superspeed motor. Based on the principle of waveguide conversion, a waveguide structure is designed inside the motor stator, which can efficiently convert the longitudinal and radial vibrations generated ...

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Abstract

The invention discloses a thin reverse type ultrasonic motor. Vertical and radial vibration generated by piezoelectric ceramic sheets can be converted into torsional oscillation modal of a waveguide structure in a stator, and a rotor can be made to realize a high rotation speed through the torsional oscillation modal. The thin reverse type ultrasonic motor comprises a rotation shaft (1), wherein the rotation shaft (1) penetrates through a slot pad (2), a spring (3), the rotor (5) and the stator (6), the slot pad (2) is fastened on the rotation shaft (1) through a key slot on the rotation shaft (1), the piezoelectric ceramic sheets are attached to upper and lower surfaces of the stator (6), the rotor (5) is driven to rotate by the stator (6) through friction, the stator (6) is internally connected with the waveguide structure, and the waveguide structure comprises uniformly-distributed spoked beams in a tangent relationship with a center cylinder. The thin reverse type ultrasonic motor is suitable for the precise driving and transmission technology field.

Description

technical field [0001] The invention relates to the technical field of precision drive and transmission, in particular to a sheet-type torsional ultrasonic motor. Background technique [0002] The ultrasonic motor is a piezoelectric motor, which uses the inverse piezoelectric effect of the material to convert electrical energy into the vibration energy of the stator of the ultrasonic motor, and then converts the vibration into the planar or spatial motion of the mover through friction. In micro-flying robots, DC motors are mainly used as drive motors. Studies have shown that with the size of miniaturized DC motors, the Joule heat loss increases sharply, and the contradiction between the performance and quality of DC motors makes it no longer suitable for more applications. Tiny aircraft. Compared with the traditional electromagnetic motor, the ultrasonic motor has a compact structure, high energy density, and is easy to miniaturize; the motor has fast response speed, good p...

Claims

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Application Information

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IPC IPC(8): H02N2/00
CPCH02N2/001H02N2/0045
Inventor 杨颖皮奥特尔·瓦西尔耶夫邱建敏谢尔盖·鲍罗廷达柳斯·马泽卡金家楣王一平
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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