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Piezoelectric ceramic composite driving actuator with two fixedly installed ends

A piezoelectric ceramic and piezoelectric composite technology, which is applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problems of high cost, complex drive structure, and positioning accuracy and other problems, to achieve the effect of ensuring the positioning accuracy, facilitating the promotion and application, and increasing the driving stiffness

Pending Publication Date: 2020-04-17
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The rigidity of the flexible clamping method is insufficient, and it is difficult to use during fast positioning. The positioning accuracy will also be affected by the flexible parts. The installation structure is complicated and the cost is high. Another serious problem is that the clamping itself will seriously affect the vibration efficiency of the vibrating body
[0004] Some commercial piezoelectric actuators / motors can only use flexible clamping methods, which seriously affects the vibration efficiency of the vibrating body and is not suitable for places that require rigidity
Bionic inchworm walking is suitable for linear drive along the guide rod, but there are problems such as complex drive structure, low drive efficiency, difficult installation, etc., and its applicability is not strong

Method used

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  • Piezoelectric ceramic composite driving actuator with two fixedly installed ends
  • Piezoelectric ceramic composite driving actuator with two fixedly installed ends
  • Piezoelectric ceramic composite driving actuator with two fixedly installed ends

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] like figure 1 As shown, the double-ended piezoelectric ceramic composite drive actuator / motor includes two composite deformation laminated piezoelectric ceramic elements, left and right. The left piezoelectric ceramic element is installed on the metal mounting base (15), and the other end is equipped with a contact head (11). Similarly, the right piezoelectric ceramic element is also installed on the metal mounting base (15), and the other end is installed with a contact Head (18), drive head (14) is installed on base (15) top, constitutes a compound vibration body.

[0043] The left piezoelectric ceramic element includes two deformation sections (12) and (13), the deformation section (12) is a shear deformation section, and the deformation section (13) is a longitudinal deformation section. The same symmetrical right piezoelectric ceramic element also includes two deformation segments (12) and (13), the deformation segment (12) is a shear deformation segment, and the ...

Embodiment 2

[0051] image 3 The construction method of the longitudinal and transverse compound deformation piezoelectric ceramic actuators fixedly installed at both ends is described. like image 3 As shown, three transverse laminated piezoelectric ceramic elements (32), (33) and (36) are installed on the middle metal body (35), and the left end of the left end piezoelectric ceramic element (32) is equipped with a contact head (31) , the right end of the right end piezoelectric ceramic element (36) is equipped with a contact head (37), and the driving head (34) is installed on the upper end of the longitudinal piezoelectric ceramic (33).

[0052] Figure 4 The installation and deformation of the longitudinal and transverse compound deformation piezoelectric ceramic actuators fixedly installed at both ends are described. like Figure 4 As shown, the contact head (31) at the left end of the actuator and the contact head (37) at the right end are respectively embedded in the fixed base ...

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Abstract

The invention discloses a piezoelectric ceramic composite driving actuator with two fixedly installed ends and relates to the field of piezoelectric materials and application thereof. The actuator comprises a piezoelectric composite vibration unit, installation end contact heads, a spring, a driving head and a metal mounting base, the piezoelectric composite vibration unit comprises two compositedeformation laminated piezoelectric ceramic elements which are transversely and symmetrically mounted, each composite deformation laminated piezoelectric ceramic element comprises a shear deformationsection and a longitudinal deformation section, and a contact head is mounted at an end part of each composite deformation laminated piezoelectric ceramic element; the driving head is mounted above the metal mounting base; one end of the spring is mounted on a spring base, and the other end of the spring is mounted on the metal mounting base; and the piezoelectric ceramic composite driving actuator is fixed in a double-end rigid clamping mode. According to the piezoelectric ceramic composite driving actuator, the double-end rigid clamping mode is adopted, the problem that a conventional piezoelectric vibration actuator is difficult to clamp is solved, the positioning precision can be guaranteed during work, and large driving force and driving rigidity are provided.

Description

technical field [0001] The invention belongs to the field of piezoelectric materials and applications thereof, and relates to the positioning of piezoelectric actuators and motors, in particular to a piezoelectric ceramic composite drive actuator with double ends fixedly installed. Background technique [0002] Piezoelectric actuator / motor refers to a type of piezoelectric device that utilizes the inverse piezoelectric effect of piezoelectric materials, that is, applying a specific excitation signal to the piezoelectric element to deform the piezoelectric element and output a specified displacement. Or the law of action, such piezoelectric elements are called piezoelectric actuators, also known as piezoelectric actuators, piezoelectric actuators, piezoelectric drivers, etc., if the regular vibration of such piezoelectric elements (such as elliptical Vibration) is used for continuous output, then such elements can constitute a piezoelectric motor, or called a piezoelectric mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/04H02N2/00
CPCH02N2/04H02N2/0055H02N2/006H02N2/009
Inventor 鹿存跃易超方成权令伟
Owner SHANGHAI JIAO TONG UNIV
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