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Asymmetric rhombic hinge orthogonal drive type piezoelectric stick-slip linear motor and its compound excitation method

A linear motor, asymmetric technology, used in piezoelectric/electrostrictive or magnetostrictive motors, electrical components, generators/motors, etc., can solve the problem of zigzag-like uneven motion output and deteriorate the drive output performance , limited mechanical output characteristics, etc., to achieve the effect of improving mechanical output characteristics, output efficiency, and output force

Active Publication Date: 2017-11-10
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, such as the difficulty in comprehensive control of the friction between the stator and the mover, the limited mechanical output characteristics, the generation of sawtooth-like unstable motion output, and the degradation of the output performance of the driver, the present invention discloses An asymmetric diamond hinge orthogonal drive piezoelectric stick-slip linear motor and its compound excitation method

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  • Asymmetric rhombic hinge orthogonal drive type piezoelectric stick-slip linear motor and its compound excitation method
  • Asymmetric rhombic hinge orthogonal drive type piezoelectric stick-slip linear motor and its compound excitation method
  • Asymmetric rhombic hinge orthogonal drive type piezoelectric stick-slip linear motor and its compound excitation method

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specific Embodiment approach 1

[0021] Specific implementation mode one: combine Figure 1~Figure 9 This embodiment will be described. This embodiment provides a specific implementation of an asymmetric rhombic hinge orthogonally driven piezoelectric stick-slip linear motor. The asymmetric rhombic hinge orthogonal drive piezoelectric stick-slip linear motor consists of a loading platform 1 , a stator 2 and a mover 3 .

[0022]The loading platform 1 is an asymmetric rhombic hinge orthogonal drive type piezoelectric stick-slip linear motor preload adjustment device, the loading platform 1 is composed of a base 1-1, an upper slide 1-2 and a manual adjustment screw 1 -3 composition. The base 1-1 can be made of stainless steel. The base 1-1 is provided with a mover installation hole 1-1-1 and a mover installation plane 1-1-8 for installing the mover 3; the bottom of the base 1-1 is provided with a base installation hole 1 -1-2, fixed installation with peripheral devices can be realized through threaded connec...

specific Embodiment approach 2

[0025] Specific implementation mode two: combination Figure 10 This embodiment will be described. This embodiment provides a specific implementation of a compound excitation method for an asymmetric rhombic hinge orthogonally driven piezoelectric stick-slip linear motor. The composite excitation method of the asymmetric rhombic hinge orthogonal drive type piezoelectric stick-slip linear motor is as follows.

[0026] The composite excitation electric signal used in the driving method is compositely superimposed on the driving wave in the rapid deformation stage of the stator by the friction regulation wave, the friction regulation wave is a sine wave, and the driving wave is a sawtooth 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...

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Abstract

The invention relates to an asymmetrical diamond-shaped hinge quadratured driving type piezoelectric stick-slip linear motor and a recombination excitation method thereof, and aims to solve the problem that the output mechanical property of the current piezoelectric stick-slip linear motor is limited caused by difficulty in comprehensive control on a friction force. The piezoelectric stick-slip linear motor comprises a loading platform, a stator and a rotor, wherein the stator generates lateral displacement by an asymmetrical diamond-shaped movement converter, the friction driving force is increased, the friction resistance is reduced, and the generated lateral movement is used for driving the rotor to move through a stator driving leg; and meanwhile, a friction control wave is coupled and superposed to a sawtooth driving wave in a rapid deformation stage of the stator, the friction resistance between the stator and the rotor in the rapid deformation stage is reduced, the displacement returning rate is reduced, and the mechanical output property of the piezoelectric stick-slip linear motor is remarkably improved. The piezoelectric stick-slip linear motor has the advantages of compact structure, high positioning precision and the like, and thus, the piezoelectric stick-slip linear motor has favorable application prospect in the fields with miniature structures, high positioning accuracy requirements and the like such as micro-nano operation, semiconductor processing and precision optical instruments.

Description

technical field [0001] The invention relates to an asymmetric rhombic hinge orthogonally driven piezoelectric stick-slip linear motor and an excitation method thereof, belonging to the advanced technical fields of semiconductor processing and optical precision instruments. 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 m...

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 程廷海张邦成柳虹亮李恒禹宋兆阳秦峰
Owner CHANGCHUN UNIV OF TECH
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