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Working method of plate-type linear piezoelectric motor based on in-plane modes

A technology of piezoelectric motors and working methods, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problem of shortened life of piezoelectric actuators and wear of driving feet , serious problems

Active Publication Date: 2017-05-17
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, the wear of the driving foot is relatively serious, which shortens the life of the piezoelectric actuator

Method used

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  • Working method of plate-type linear piezoelectric motor based on in-plane modes
  • Working method of plate-type linear piezoelectric motor based on in-plane modes
  • Working method of plate-type linear piezoelectric motor based on in-plane modes

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Experimental program
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Effect test

Embodiment Construction

[0017] The structure of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0018] Such as figure 1 As shown, the present invention provides a plate-type linear piezoelectric motor based on in-plane modes, including a stator and a mover, and the stator is composed of a rectangular metal sheet 1 and two or four unidirectionally polarized piezoelectric ceramic sheets 2; The movable subassembly adopts a slide bar 6, and a friction strip 5 is pasted on the slide bar. The required preload between the stator and the mover is provided by the spring element 4 . Two or four piezoelectric ceramic sheets are respectively driven to make the driving foot of the stator generate an elliptical motion, and under the action of a certain preload, the slide bar is driven to move in a straight line. By switching the drive signal, this motor can achieve reverse linear motion.

[0019] figure 2 It is the working mode diagram of the stator. ...

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Abstract

The invention discloses a working mode of a plate type linear piezoelectric motor based on an in-plane mode, and belongs to the technical field of piezoelectric motors. The plate type linear piezoelectric motor comprises a stator component and a rotor component, and the stator component is composed of a square metal sheet and two or four one-way polarization square piezoelectric ceramic pieces; or the stator component is a single one-way polarization two-partition square piezoelectric ceramic block; a sliding strip is adopted by the rotor component, and a friction strip is pasted on the sliding strip. Prepressure between a stator and a rotor is provided through a spring element, and the two or four piezoelectric ceramic pieces or two partitions of the one-way polarization two-partition square piezoelectric ceramic block are driven; an oval motion is generated on a driving foot of the stator; under the effect of a certain prepressure, the sliding strip is driven to move in a linear manner; a driving signal is switched, the motor can achieve reverse linear motion. The motor is simple in structure, small in size, light, high in precision, high in response speed and capable of being applied to precise electromechanical devices, laser tuning equipment and optical instrument equipment.

Description

technical field [0001] The invention relates to a working mode of a plate-type linear piezoelectric motor based on an in-plane mode, and belongs to the technical field of piezoelectric actuators. Background technique [0002] A piezoelectric actuator is an actuator that uses the inverse piezoelectric effect of piezoelectric ceramics to convert a voltage signal into a strain signal, thereby outputting a driving force. This kind of actuator has the characteristics of small size, light weight, compact structure, fast response, low noise, no electromagnetic interference, good position and speed control, etc. It is widely used in industrial automation control, optical precision instruments, biomedical, aerospace, automotive It has broad application prospects in special electrical appliances, intelligent robots and other fields. [0003] Patent Document 1 "PIEZOELECTRIC ACTUATOR FOR AN ULTRASONIC MOTOR" (piezoelectric actuator applied to piezoelectric motor), patent number: US201...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/02H02N2/04
Inventor 时运来彭瀚旻
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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