Piezoelectric stick-slip linear motor with cable-pull diamond-shaped amplifying mechanism and its excitation method

An amplifying mechanism, linear motor technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc. problems such as the limitation of friction, the difficulty of comprehensive control of friction, etc., to achieve the effect of compact structure, improved mechanical output characteristics, and convenient control.

Active Publication Date: 2017-12-19
CHANGCHUN UNIV OF TECH
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  • 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 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 cable-pulled rhombic amplifying mechanism and excitation method thereof

Method used

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  • Piezoelectric stick-slip linear motor with cable-pull diamond-shaped amplifying mechanism and its excitation method
  • Piezoelectric stick-slip linear motor with cable-pull diamond-shaped amplifying mechanism and its excitation method
  • Piezoelectric stick-slip linear motor with cable-pull diamond-shaped amplifying 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 cable-pull diamond-shaped amplifying mechanism. The piezoelectric stick-slip linear motor with a cable-stayed rhombic amplifying mechanism is composed of a pre-pressure device 1 , a cable-stayed stator 2 and a mover 3 .

[0025]The preloading device 1 is composed of a lower slide 1-1, an upper slide 1-2 and a manual adjustment screw 1-3. The slide table 1-1 is provided with a mover installation hole 1-1-1 and a mover installation base surface 1-1-12 for installing the fixed mover 3; the bottom of the slide table 1-1 is provided with a countersunk head Holes 1-1-2 are used for fixed connection with peripheral devices. The inside of the sliding platform 1-1 is provided with an inner fixed guide rail 1-1-11, which is used to assist the upper sliding platform 1...

specific Embodiment approach 2

[0028] Specific implementation mode two: combination Figure 11 The figures illustrate the present embodiment. This implementation mode provides a specific implementation scheme of an excitation method for a piezoelectric stick-slip linear motor of a cable-pull diamond-shaped amplifying mechanism. The excitation method of the piezoelectric stick-slip linear motor of the cable-pull rhombic amplifying 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 inclined-stayed 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...

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Abstract

The invention provides an oblique-pulling rhombic amplification piezoelectric stick-slip linear motor and an excitation method thereof, and aims to solve the problem of an existing piezoelectric stick-slip linear motor that the output mechanism performance is limited by difficult comprehensive regulation and control of frictional forces. The oblique-pulling rhombic amplification piezoelectric stick-slip linear motor is composed of a pre-compression device, an oblique-pulling stator and a mover. An oblique-pulling rhombic movement conversion mechanism of the stator has a micro-displacement amplification function, and the distribution of the axial rigidity is uneven and a lateral displacement is generated, so that the friction driving force is increased, and the friction resistance is reduced; in addition, friction regulation and control waves are superposed to sawtooth driving waves in a coupled manner in a rapid deformation driving phase of the oblique-pulling stator, so that the friction resistance between the stator and the mover in the rapid deformation driving phase is reduced, the comprehensive regulation and control of the frictional forces is realized, and the mechanical output characteristic of the piezoelectric stick-slip linear motor is improved. According to the invention, the oblique-pulling rhombic amplification piezoelectric stick-slip linear motor has the advantages that the structure is compact, the assembling is convenient, the positioning precision is high, and the stroke is not limited, so that the oblique-pulling rhombic amplification piezoelectric stick-slip linear motor can be widely applied to the technical field of micro-nano precise driving and positioning such as precise optical instruments.

Description

technical field [0001] The invention relates to a piezoelectric stick-slip linear motor with a cable-pull diamond-shaped amplifying 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 resonant pie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/04H02N2/06
CPCH02N2/04H02N2/06
Inventor 程廷海赵宏伟张邦成柳虹亮宋兆阳秦峰
Owner CHANGCHUN UNIV OF TECH
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