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Piezoelectric stick-slip linear motor with chute-type diamond-shaped amplifying mechanism and its excitation method

A technology of amplifying mechanism and linear motor, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motor, generator/motor, electrical components, etc. Limitation, difficulty in comprehensive regulation of friction, etc., to achieve the effect of compact structure, improved mechanical output characteristics, and convenient control

Active Publication Date: 2017-11-10
CHANGCHUN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 chute-type rhombic amplifying mechanism and excitation method thereof

Method used

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  • Piezoelectric stick-slip linear motor with chute-type diamond-shaped amplifying mechanism and its excitation method
  • Piezoelectric stick-slip linear motor with chute-type diamond-shaped amplifying mechanism and its excitation method
  • Piezoelectric stick-slip linear motor with chute-type 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 chute-type diamond-shaped amplifying mechanism. The piezoelectric stick-slip linear motor with a chute-type diamond-shaped amplifying mechanism includes a preload mechanism 1 , a chute-type stator 2 and a mover 3 .

[0025]The preloading mechanism 1 is composed of a fixed base 1-1, an upper moving plate 1-2 and a manual adjustment screw 1-3, wherein the fixed base 1-1 and the upper moving plate 1-2 are made of No. 45 steel material. The fixed base 1-1 is provided with a mover installation base surface 1-1-1 and a mover threaded mounting hole 1-1-2, and the mover 3 is fixed on the mover through the mover threaded mounting hole 1-1-2. On the installation base surface 1-1-1; the bottom of the fixed base 1-1 is provided with a tapered hole 1-1-3 for connecting a...

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 with a chute-type diamond-shaped amplifying mechanism. The excitation method of the piezoelectric stick-slip linear motor with a chute-type 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 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 s...

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Abstract

The invention discloses a slanted-slot type diamond amplification mechanism piezoelectric stick-slip linear motor and an excitation 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 comprises a pre-loading mechanism, a slanted-slot type stator and a rotor; the slanted-slot type diamond movement conversion mechanism set by the slanted-slot type stator can realize the displacement amplification, and is capable of increasing the friction drive force and reducing the friction resistance since the non-uniform axial rigidity distribution thereof produces the lateral displacement; 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 drive stage, thereby reducing the friction resistance between the stator and the rotor at the fast deformation drive 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 advantages of being compact in structure, convenient for controlling, high in positioning precision and unlimited in travel, so that the motor can be well applied to the precise optical instruments and like micro-nano precise drive and positioning technical field.

Description

technical field [0001] The invention relates to a piezoelectric stick-slip linear motor with a chute-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 the resonant...

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柳虹亮殷梦飞何璞
Owner CHANGCHUN UNIV OF TECH
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