Friction force controllable type linear piezoelectric actuator and control method thereof

A piezoelectric actuator, controllable technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, generators/motors, etc., can solve the problem of small thrust, weakened performance, preload Insufficient and other problems, to achieve the effect of large thrust

Pending Publication Date: 2019-09-10
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inchworm precision drive can provide greater precision and thrust, but due to its complex structure, the drive frequency is small, resulting in low drive speed, and the complex structure also makes control more difficult, and the installation accuracy is difficult to control; The matching wear of the type precision drive is serious, which eventually leads to poor contact, which makes the drive of piezoelectric ceramics produce errors and weakens the performance
The structure of the inertial friction piezoelectric drive device is relatively simple, the control is easier, and the driving speed is relatively high.

Method used

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  • Friction force controllable type linear piezoelectric actuator and control method thereof
  • Friction force controllable type linear piezoelectric actuator and control method thereof

Examples

Experimental program
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Embodiment Construction

[0027] Please check figure 1 , a friction-controllable linear piezoelectric actuator, including a rotating block 10, a contact head 20, a fixed block 30, a mover 40, a laminated piezoelectric ceramic 50, a mass block 60 and a spring 70, wherein the mass block 60 has a square structure structure, the laminated piezoelectric ceramic 50 has a square cross section.

[0028] The mover 40 can move horizontally, and the specific structure is as follows: two lower rollers and an upper roller are additionally provided, the bottom surface of the mover 40 is supported and connected on the two lower rollers, and the upper roller is connected to the top surface of the mover 40 , the movement of the mover 40 is turned into rolling by the rollers. The lower roller and the upper roller are all rotatably arranged on a fixed object, such as a frame or a casing.

[0029] The fixing block 30 is fixed on the mover 40 , and the specific structure is such as fixing the fixing block 30 on the top s...

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PUM

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Abstract

The invention discloses a friction force controllable type linear piezoelectric actuator and a control method thereof. The friction force controllable type linear piezoelectric actuator comprises a rotating block, a contact head, a fixed block, a rotor, a laminated piezoelectric ceramic, a mass block and an elastic element; the rotor can move in a first direction; the fixed block is fixedly arranged on the rotor; one end of the laminated piezoelectric ceramic is fixedly arranged on a side wall of the fixed block, and the other end of the laminated piezoelectric ceramic is fixedly connected with the mass block; the fixed block, the laminated piezoelectric ceramic and the mass block are arranged in sequence in the first direction; the second end of the rotating block can swing around the first end; the second end of the rotating block is fixedly provided with the contact head; and the elastic element is connected with the rotating block to enable the contact head to press against the rotor.

Description

technical field [0001] The invention relates to the technical field of piezoelectric precision braking, in particular to a friction-controllable linear piezoelectric actuator and a control method thereof. Background technique [0002] The inverse piezoelectric effect of piezoelectric ceramics can convert electrical energy into mechanical energy. In recent years, the optimization of the manufacturing process has enabled large-scale production of piezoelectric ceramics, and laminated piezoelectric ceramics are increasingly used in precision drives. . The piezoelectric linear motor made of the inverse piezoelectric effect of laminated piezoelectric ceramics has many advantages, such as high displacement resolution, large bearing capacity, high output rigidity, good output displacement repeatability, simple and easy control, and ability to overcome electromagnetic waves. Interference, high temperature, low temperature and other issues. [0003] At present, there are mainly two...

Claims

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Application Information

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IPC IPC(8): H02N2/02H02N2/06
CPCH02N2/025H02N2/062
Inventor 王寅杨成陈紫嫣崔长彩范伟余卿
Owner HUAQIAO UNIVERSITY
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