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Piezoelectric motor

A piezoelectric motor and motor shaft technology, which is applied to piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc. The electric motor control strategy is complex and other problems, so as to achieve the effect of simple control strategy, low failure rate and stable equipment operation.

Active Publication Date: 2020-06-05
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a piezoelectric motor, which aims to solve the problem that the control strategy of the multi-degree-of-freedom piezoelectric motor in the prior art is complex, and it is easy to cause shutdown due to control strategy failure and affect the stable operation of the equipment.

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  • Piezoelectric motor
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Embodiment Construction

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0024] Please also refer to figure 1 , figure 2 and Figure 4 , a piezoelectric motor provided by the present invention will now be described. The piezoelectric motor includes a housing 1, a stator 2, a rotor 3 and a plurality of piezoelectric drivers 4; wherein, the top of the housing 1 is provided with a first avoidance hole 100 communicating with its inner cavity; the bottom of the stator 2 The end is fixed to the bottom of the housing 1, and the top end is provided with a roller assembly 20; the rotor 3 is hollow spherical and located inside the housing 1, ...

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Abstract

The invention provides a piezoelectric motor, which belongs to the technical field of piezoelectric driving, and comprises a shell, a stator, a rotor and a plurality of piezoelectric drivers, a firstreceding hole communicating with an inner cavity of the shell is formed in the top of the shell. The bottom end of the stator is fixedly connected to the bottom of the shell; the rotor is in a hollowspherical shape and located in the shell, a motor shaft is arranged at the top, a second receding hole communicated with an inner cavity of the rotor is formed in the bottom, the motor shaft upwards penetrates through the receding hole and extends out of the shell, the rotor covers the roller assembly, and the inner wall of the rotor makes rolling contact with the roller assembly; the multiple piezoelectric drivers are arranged on the inner wall of the shell at intervals and are symmetrical in pairs with the vertical axis of the rotor as the center, the driving foot of each piezoelectric driver abuts against the outer wall of the rotor, and the driving feet are used for driving the rotor to rotate around the horizontal axis of the rotor so as to drive the motor shaft to swing with the horizontal axis of the rotor as the axis. The piezoelectric motor provided by the invention is simple in control strategy and low in failure rate.

Description

technical field [0001] The invention belongs to the field of piezoelectric drive technology, and more specifically relates to a piezoelectric motor. Background technique [0002] Piezoelectric drive technology is based on the inverse piezoelectric effect of piezoelectric ceramic materials, and realizes linear or rotary motion by controlling its mechanical deformation. Piezoelectric motors use piezoelectric drive technology to convert the mechanical deformation of piezoelectric ceramic materials into macroscopic motion of the motor shaft through mechanical resonance amplification and friction coupling. In piezoelectric motors, piezoelectric ceramic materials replace complex copper coils and iron cores. Now piezoelectric motors have been widely used in medical equipment, aerospace, precision instruments, robots and many other fields. At present, commonly used piezoelectric motors include single-degree-of-freedom motors and multi-degree-of-freedom motors. In modern intelligent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/00H02N2/12H02N2/14
CPCH02N2/0075H02N2/12H02N2/14
Inventor 李争赵亮
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY