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J-type structure precise piezoelectric stick-slip linear motor and drive method thereof

A linear motor, piezoelectric technology, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc. Difficulty, limited output mechanical performance, etc., to achieve the effect of improving mechanical output characteristics, reducing displacement back-off rate, and improving output efficiency

Active Publication Date: 2016-09-07
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the technical problems of the existing piezoelectric stick-slip linear motors, such as the difficulty in comprehensive regulation of the friction force between the stator and the mover, the limited output mechanical performance, the generation of sawtooth-like unstable motion output, and the degradation of output performance, the present invention discloses A J-shaped structure precision piezoelectric stick-slip linear motor and its driving method

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  • J-type structure precise piezoelectric stick-slip linear motor and drive method thereof
  • J-type structure precise piezoelectric stick-slip linear motor and drive method thereof
  • J-type structure precise piezoelectric stick-slip linear motor and drive method thereof

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specific Embodiment approach 1

[0024] Specific implementation mode one: combine Figure 1~Figure 9 This embodiment will be described. This implementation mode provides a specific implementation scheme of a J-shaped structure precision piezoelectric stick-slip linear motor. The J-shaped structure precision piezoelectric stick-slip linear motor is composed of a fixed base 1 , a preloading mechanism 2 , a J-shaped structure stator 3 and a mover 4 .

[0025] The fixed base 1 adopts an "L"-shaped structure, and the fixed base 1 can be made of high magnetic permeability stainless steel. The fixed base 1 includes a fixed base mounting hole 1-1, a pre-pressure loading mechanism threaded mounting hole 1-2, a guide rail mounting plane 1-3 and a guide rail threaded mounting hole 1-4. The mounting hole 1-1 of the fixed base can be fixed with other peripheral devices, the threaded mounting hole 1-2 of the pre-pressure loading mechanism is used for fixing the pre-pressure loading mechanism 2, the mounting plane 1-3 of ...

specific Embodiment approach 2

[0029] Specific implementation mode two: combination Figure 10 The figures illustrate the present embodiment. This implementation mode provides a specific implementation scheme of a J-shaped structure precision piezoelectric stick-slip linear motor driving method. The driving method of the J-shaped precision piezoelectric stick-slip linear motor is as follows.

[0030] The composite excitation electric signal used in the driving method is compositely superimposed on the sawtooth driving wave in the rapid deformation stage of the stator by the friction regulation wave, the driving wave is a sawtooth wave, and the friction regulation wave can be a sine wave. Among them, the period of the sawtooth driving wave is T 1 , the excitation voltage amplitude is V 1 , the symmetry is D, and the period of the slight friction sinusoidal control wave is T 2 , the excitation voltage amplitude is V 2 , the period ratio of the sawtooth drive wave to the slight friction sinusoidal control...

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Abstract

The invention discloses a J-type structure precise piezoelectric stick-slip linear motor and a drive method thereof. The problem that the output mechanical property is limited since the current piezoelectric stick-slip linear motor is difficult in friction force comprehensive regulation is solved. The motor is composed of four parts: a fixed base, a pre-pressure loading mechanism, a J-type structure stator and a rotor; the stator adopts a J-type hinge mechanism so that the axial rigidity distribution of the stator is non-uniform, the stator drive end is excited to produce the lateral displacement so as to increase the friction drive force and reduce the friction resistance; and meanwhile, the friction regulation wave is coupled and overlapped to the sawtooth drive wave of the slanted-slot type stator at the fast deformation stage, thereby reducing the friction resistance between the stator and the rotor at the fast deformation stage, implementing the comprehensive regulation on the friction force, and obviously promoting the mechanical output feature of the piezoelectric stick-slip linear motor. The motor disclosed by the invention has the features of being simple in structure, high in precision and large in travel, and has good application prospect in the aerospace aviation, optical precision instrument, semiconductor processing and like micro-nano precise driving and positioning field.

Description

technical field [0001] The invention relates to a J-shaped structure precision piezoelectric stick-slip linear motor and a driving method thereof, belonging to the technical field of micro-nano precision driving and positioning. Background technique [0002] Piezoelectric stick-slip linear motor is a kind of piezoelectric stick-slip linear motor that uses the inverse piezoelectric effect of piezoelectric elements to excite the vibrator (or stator) to generate micro-vibration under the excitation of an asymmetric electrical signal, and realizes mechanical energy output through the frictional coupling between the vibrator and the mover. precision micro-nano actuators. According to different driving working principles, piezoelectric stick-slip linear motors are mainly divided into two categories: resonant piezoelectric motors (also called ultrasonic motors) and non-resonant piezoelectric motors (also called piezoelectric stick-slip motors). Compared with the resonant piezoelec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/04H02N2/06
CPCH02N2/04H02N2/06
Inventor 程廷海刘文博张邦成柳虹亮李博文高琪
Owner CHANGCHUN UNIV OF TECH
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