Unlock instant, AI-driven research and patent intelligence for your innovation.

U-shaped precision linear piezoelectric driver and its excitation method

A piezoelectric driver, linear technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problems of fast moving speed and low displacement resolution of the driver, Achieve the effect of large output force, high output speed and large working stroke

Inactive Publication Date: 2018-11-02
HARBIN INST OF TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The piezoelectric material of the resonant piezoelectric actuator is excited by a high-frequency AC voltage, at this time, the actuator moves at a fast speed and has a low displacement resolution

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • U-shaped precision linear piezoelectric driver and its excitation method
  • U-shaped precision linear piezoelectric driver and its excitation method
  • U-shaped precision linear piezoelectric driver and its excitation method

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0028] Specific implementation mode one: combine figure 1 and figure 2 Describe this embodiment, the U-shaped precision linear piezoelectric driver described in this embodiment includes a linear mover 1 and four transducers;

[0029] The four transducers are respectively: a first transducer 2-1, a second transducer 2-2, a third transducer 2-3 and a fourth transducer 2-4;

[0030] The first transducer 2-1 and the fourth transducer 2-4 are arranged horizontally, and the axis of the first transducer 2-1 and the axis of the fourth transducer 2-4 are parallel to each other;

[0031] The second transducer 2-2 is arranged symmetrically with the third transducer 2-3, and the axis of the second transducer 2-2 is simultaneously aligned with the axis of the first transducer 2-1 and the fourth transducer. The axis space of the energy device 2-4 is orthogonal;

[0032] Each of the four transducers includes a housing 2-11, a piezoelectric stack 2-12, a pretension block 2-13, a positioni...

specific Embodiment approach 2

[0042] Embodiment 2: The excitation method of the U-shaped precision linear piezoelectric driver described in this embodiment, the excitation method is realized by the U-shaped precision linear piezoelectric driver described in Embodiment 1, and the excitation method includes U-shaped precision The step motion excitation method of the linear piezoelectric driver, the fast motion excitation method of the U-shaped precision linear piezoelectric driver and the motion excitation method of the U-shaped precision linear piezoelectric driver;

[0043] The stepping motion excitation method of the U-shaped precision linear piezoelectric driver is to drive the linear mover 1 to realize stepping motion in both upward and downward directions;

[0044] The fast motion excitation method of the U-shaped precision linear piezoelectric driver is to drive the linear mover 1 to realize fast motion in both upward and downward directions;

[0045] The motion excitation method of the U-shaped preci...

specific Embodiment approach 3

[0046] Specific implementation mode three: combination image 3 and Figure 4Describe this embodiment. This embodiment is to further limit the excitation method of the U-shaped precision linear piezoelectric actuator described in the second specific embodiment. In this embodiment, the linear mover 1 is driven to achieve upward and downward directions. The stepping motion method includes an excitation method for the linear mover 1 to realize an upward stepping motion and an excitation method for the linear mover 1 to realize a downward stepping motion;

[0047] The excitation method for the linear mover 1 to realize upward stepping motion includes the following steps:

[0048] Step 11, in the initial state, under the action of the pre-tightening force, the end of the output shaft 2-16 of the first transducer 2-1 and the end of the output shaft 2-16 of the fourth transducer 2-4 are in contact with the linear motion The mover 1 is in contact with each other, and the mover 1 is ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a U-shaped precision linear piezoelectric driver and a method for driving the same, and belongs to the technical field of precision piezoelectric driving. The U-shaped precision linear piezoelectric driver is used to meet the requirements of large travel range, high speed, intense loading and high precision performance, presented in the technical fields of microelectronic manufacture, nano-manufacture, aeronautics and astronautics and the like to precision driving. According to the U-shaped precision linear piezoelectric driver, two horizontally-arranged transducers are parallel to each other and two vertically-arranged transducers are symmetric with each other, and the axis of the vertically-arranged transducers is spatially orthogonal to the axes of the horizontally-arranged transducers. The transducers each comprise a housing, a piezo stack, a pre-loading block, locating pins, an end cap and an output shaft, and such a transducer can effectively reduce the bending moment acting directly upon the piezo stack by load, thus serving to augment the output force of the linear mover. According to the invention, a fairly high positioning accuracy is achieved while large-scale and high-speed movement is realized, and advantages are exhibited, such as high positioning accuracy, large travel range, adjustable output speed, adjustable output force, large output force and so on.

Description

technical field [0001] The invention belongs to the technical field of piezoelectric precision driving. Background technique [0002] A piezoelectric actuator is a device that uses the inverse piezoelectric effect to convert input electrical energy into mechanical energy and output it. Piezoelectric actuators have the characteristics of fast response speed, strong anti-electromagnetic interference ability, self-locking when power off, and high torque density. They have been widely used in precision instruments, high-end equipment manufacturing, aerospace and other fields. [0003] At present, common piezoelectric drivers can be divided into resonant piezoelectric drivers and non-resonant piezoelectric drivers according to the driving principle. The resonant piezoelectric actuator utilizes the elliptical trajectory generated by the driving foot on the surface of the elastic body when the elastomer composite vibrator resonates, and drives the mover to move through the frictio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/02H02N2/04
CPCH02N2/02H02N2/021H02N2/026H02N2/04
Inventor 刘英想田鑫琦石胜君陈维山冯培连
Owner HARBIN INST OF TECH