Birotor rotary piezoelectric motor

A rotary pressure, electric motor technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc. The realization of dual-rotor drive, affecting the application range of rotary piezoelectric motors, etc., achieves the effects of good speed and position control performance, light weight and simple structure

Pending Publication Date: 2020-09-15
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the current rotary piezoelectric motors use piezoelectric ceramics pasted on the surface of the rigid stator to excite the natural vibration mode of the stator, thereby driving the rotor to rotate. The piezoelectric stator designed based on this method is difficult to drive the dual rotors, or even The driving of the dual rotors is realized, but the independent control of the speed and torque of the two rotors cannot be realized, which greatly affects the application range of the rotary piezoelectric motor. The demand for motors is particularly urgent

Method used

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  • Birotor rotary piezoelectric motor
  • Birotor rotary piezoelectric motor
  • Birotor rotary piezoelectric motor

Examples

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Embodiment Construction

[0018] The present invention is described in detail below in conjunction with accompanying drawing and specific embodiment:

[0019] Such as figure 1 As shown, a dual-rotor rotary piezoelectric motor, the piezoelectric motor is a dual-rotor rotary piezoelectric motor driven by a flexible beam, specifically including: a base part, a stator part and a rotating part; as figure 2 and image 3 As shown, the base part includes a base 3, the base 3 is a square structure, including four stator installation slots 301, four slideways 302, four elastic plug installation surfaces 303, eight threaded holes 304, Eight mounting holes 305 for the rotating shaft at the hinged end, two bosses 306, two internal pressure screw mounting surfaces 307, two bearing inner ring mounting surfaces 308, and four stator mounting grooves 301 are square groove structures and are evenly distributed on the base On the seat 3, four slideways 302 are evenly distributed on the base and located inside the stato...

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Abstract

The invention discloses a birotor rotating piezoelectric motor, and belongs to the field of piezoelectric actuators. The motor drives rotors to rotate by controlling a flexible beam to generate different deformation modes, so that the independent control on the speed and the output torque of the two rotors of the motor is realized respectively. According to the invention, a piezoelectric ceramic is pasted on the surface of a flexible beam with driving feet to form a piezoelectric stator; alternating-current voltages with different phases and frequencies are respectively applied to the plurality of piezoelectric ceramics; the inverse piezoelectric effect of the piezoelectric ceramic is utilized to excite the stator to generate different deformations; therefore, the ends of the driving feeton the surface of the flexible beam generate elliptical motion trails to drive the two coaxial rotors to rotate, four sets of stators are evenly distributed and installed on the base, and the independent control over the rotating speed and the output torque of the two rotors is achieved through different the driving modes of the four sets of stators.

Description

technical field [0001] The invention belongs to the field of piezoelectric actuators, in particular to a double-rotor rotary piezoelectric motor. Background technique [0002] As a new type of motor, the rotary piezoelectric motor has broad application prospects in the fields of car appliances, office automation equipment, precision instruments, computers, industrial control systems, aerospace, and intelligent robots. According to the research results of piezoelectric motors, it has been successfully used in the fields of automatic focus devices, transmission devices, automatic lifting devices, precision plotters, micro-mechanical drives and other fields of cameras abroad. At the same time, in some fields, for dual-rotor output The demand for piezoelectric motors is also increasing day by day. Most of the current rotary piezoelectric motors use piezoelectric ceramics pasted on the surface of the rigid stator to excite the natural vibration mode of the stator, thereby drivin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/12
CPCH02N2/12
Inventor 陈肇麟
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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