Piezoelectric stick-slip linear motor with inclined wedge type rhombus 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. It can improve the mechanical output characteristics, output efficiency and output force by improving the mechanical output characteristics, output efficiency and output force.

Active Publication Date: 2017-12-01
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 motor due to the difficulty in comprehensive regulation of the friction between the stator and the mover, the mechanical output characteristics are limited, the serrated-like uneven motion output is generated, and the output performance is deteriorated, etc., the present invention discloses a Piezoelectric stick-slip linear motor with oblique wedge rhombic amplifying mechanism and excitation method thereof

Method used

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  • Piezoelectric stick-slip linear motor with inclined wedge type rhombus amplifying mechanism and its excitation method
  • Piezoelectric stick-slip linear motor with inclined wedge type rhombus amplifying mechanism and its excitation method
  • Piezoelectric stick-slip linear motor with inclined wedge type rhombus 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 wedge-shaped rhombic amplifying mechanism. The piezoelectric stick-slip linear motor using a wedge-shaped diamond-shaped amplifying mechanism is composed of a pre-pressure adjustment mechanism 1 , a wedge-type stator 2 and a mover 3 .

[0025]The pre-pressure adjustment mechanism 1 is composed of a fixed platform 1-1, a loading platform 1-2 and a manual adjustment bolt 1-3, wherein the fixed platform 1-1 and the loading platform 1-2 of the pre-pressure adjustment mechanism 1 are made of stainless steel Material. The fixed stand 1-1 is provided with a mover installation hole 1-1-1 and a mover installation base surface 1-1-12, and the mover 3 is fixed on the mover installation hole 1-1-1. On the base surface 1-1-12; the bottom of the fixed stand 1-1 is provid...

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 with a wedge-type rhombic amplifying mechanism. The excitation method of the piezoelectric stick-slip linear motor with a wedge type rhombic amplifying mechanism is as follows.

[0029] The composite excitation electrical signal used in the excitation method is compounded and superimposed on the sawtooth driving wave in the rapid deformation driving stage of the wedge-type 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 t...

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Abstract

The invention relates to a wedge type diamond-shaped amplification mechanism piezoelectric stick-slip linear motor and excitation method thereof, 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 pre-stress adjustment device, a wedge type stator and a rotor, wherein a wedge-type diamond-shaped movement conversion mechanism of the stator has a function of micro-movement amplification, the axial rigidity of the wedge-type diamond-shaped movement conversion mechanism is not uniform in distribution, lateral displacement is generated, the friction driving force also can be increased, and the friction resistance is reduced; and meanwhile, a friction control wave is coupled and superposed to a sawtooth driving wave in a rapid deformation driving stage of the wedge-shaped stator, the friction resistance between the stator and the rotor in the rapid deformation stage is reduced, the comprehensive control on the friction force is achieved, and the mechanical output property of the piezoelectric stick-slip linear motor is improved. The piezoelectric stick-slip linear motor has the advantages of simple and compact structure, high positioning precision, large stroke and the like, is easy to assemble and convenient to control, and can be widely applied to the technical field of micro-nano precision driving and positioning such as semiconductor processing.

Description

technical field [0001] The invention relates to a piezoelectric stick-slip linear motor with an oblique wedge type 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 res...

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 程廷海李恒禹张邦成卢晓晖何璞殷梦飞
Owner CHANGCHUN UNIV OF TECH
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