Piezoelectric stick-slip linear motor with single hook displacement conversion mechanism and its excitation method

A displacement conversion, linear motor technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc. Limitation, difficulty in comprehensive control of friction, etc., to achieve the effect of compact structure, improved mechanical output characteristics, and convenient control

Active Publication Date: 2017-10-03
CHANGCHUN UNIV OF TECH
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Problems solved by technology

[0004] In order to solve the technical problems of the existing piezoelectric stick-slip linear motors due to the difficulty in comprehensive regulation of the friction between the stator and the mover, the mechanical output characteristics are limited, the sawtooth-like uneven motion output is generated, and the output performance is deteriorated, etc., the present invention discloses a Piezoelectric stick-slip linear motor with single-hook displacement conversion mechanism and excitation method thereof

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  • Piezoelectric stick-slip linear motor with single hook displacement conversion mechanism and its excitation method
  • Piezoelectric stick-slip linear motor with single hook displacement conversion mechanism and its excitation method
  • Piezoelectric stick-slip linear motor with single hook displacement conversion mechanism and its excitation method

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specific Embodiment approach 1

[0024] Specific implementation mode one: combine Figure 1~Figure 10 This embodiment will be described. This implementation mode provides a specific implementation scheme of a piezoelectric stick-slip linear motor with a single-hook displacement conversion mechanism. The single-hook displacement conversion mechanism piezoelectric stick-slip linear motor includes a loading mechanism 1 , a single-hook stator 2 and a mover 3 .

[0025]The loading mechanism 1 is composed of a lower slide 1-1, an upper slide 1-2 and a manual adjustment screw 1-3, wherein the lower slide 1-1 and the upper slide 1-2 of the loading mechanism 1 are made of high carbon steel . The sliding table 1-1 is provided with a fixing screw 1-1-1, a locking cage 1-1-2 and a locking bolt 1-1-3, which are used to connect and fix the upper sliding table 1-2 to prevent The upper slide table 1-2 loaded during the motor operation moves; the slide table 1-1 is provided with a manual adjustment screw mounting hole 1-1-...

specific Embodiment approach 2

[0028] Specific implementation mode two: combination Figure 11 This embodiment will be described. This implementation mode provides a specific implementation scheme of an excitation method for a piezoelectric stick-slip linear motor of a single-hook displacement conversion mechanism. The excitation method of the piezoelectric stick-slip linear motor of the single-hook displacement conversion mechanism is as follows.

[0029] The composite excitation electric signal used in the excitation method is compounded and superimposed on the sawtooth drive wave in the rapid deformation stage of the stator by the friction regulation 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 fri...

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Abstract

The invention discloses a single hook type displacement transfer mechanism piezoelectric stick-slip linear motor and a motivation method thereof, for solving the problem that mechanical output performance of a current piezoelectric stick-slip linear motor is limited as a friction force is difficult to adjust synthetically. The motor is composed of a loading mechanism, a single hook type stator and a rotor, wherein a single hook type diamond displacement amplification and transfer mechanism of the stator has a micrometric displacement amplification function, due to non-uniform axial rigidity distribution of the single hook type stator, lateral displacement is generated, while a friction driving force is increased, and a friction resistance is reduced; meanwhile, friction control waves are coupled and superposed into saw-toothed drive waves of the single hook type stator in a rapid deformation stage, so that the friction resistance between the stator and the rotor in the rapid reformation stage is reduced, synthetic control on the friction force is achieved, and the mechanical output performance of the piezoelectric stick-slip linear motor is obviously enhanced. Due to the advantages of being simple and compact in structure, convenient to assemble, high in positioning accuracy and not limited in stroke, the single hook type displacement transfer mechanism piezoelectric stick-slip linear motor can be widely applied to the field of micro / nano precision driving and positioning technologies such as semiconductor processing.

Description

technical field [0001] The invention relates to a piezoelectric stick-slip linear motor of a single-hook type displacement conversion mechanism and an excitation 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 inverse piezoelectric effect based on piezoelectric elements. The stator (or vibrator) is excited by an asymmetrical electric signal to generate a small amplitude high-frequency vibration, which is realized by friction coupling between the stator and the mover. A micro-nano precision piezoelectric stick-slip linear motor with mechanical energy output. According to different driving 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 resona...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/02H02N2/06
CPCH02N2/02H02N2/065
Inventor 卢晓晖程廷海陈栋李哲田丽雅王拓
Owner CHANGCHUN UNIV OF TECH
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