Piezoelectric stick-slip linear motor equipped with inclined-ladder-shaped amplitude amplifying mechanism, and excitation method for piezoelectric stick-slip linear motor

A technology of amplitude amplification and linear motors, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problem of sawtooth-like uneven motion output and mechanical output characteristics 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: 2016-10-26
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

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  • Piezoelectric stick-slip linear motor equipped with inclined-ladder-shaped amplitude amplifying mechanism, and excitation method for piezoelectric stick-slip linear motor
  • Piezoelectric stick-slip linear motor equipped with inclined-ladder-shaped amplitude amplifying mechanism, and excitation method for piezoelectric stick-slip linear motor
  • Piezoelectric stick-slip linear motor equipped with inclined-ladder-shaped amplitude amplifying mechanism, and excitation method for piezoelectric stick-slip linear motor

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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 an inclined ladder type amplitude amplification mechanism. The piezoelectric stick-slip linear motor with an inclined ladder type amplitude amplification mechanism includes a base 1 , a preload assembly 2 , an inclined ladder type stator 3 and a mover 4 .

[0025] The base 1 is made of stainless steel, and its structure is designed in an "L" shape. The base 1 includes a base installation hole 1-1, a preload assembly installation hole 1-2, a mover installation base surface 1-3 and a mover installation threaded hole 1-4. The base installation hole 1-1 is fixedly connected with the peripheral platform through bolts; the preload assembly installation hole 1-2 is used to fix the preload assembly 2 on the base 1; the mover installation base surface 1-3 and the move...

specific Embodiment approach 2

[0029] 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 an inclined ladder type amplitude amplification mechanism. The excitation method of the piezoelectric stick-slip linear motor of the inclined ladder type amplitude amplification mechanism is as follows.

[0030] The composite excitation electric signal used in the excitation method is coupled and superimposed on the sawtooth drive wave in the stator rapid deformation driving stage by friction regulation wave coupling, 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 discloses a piezoelectric stick-slip linear motor equipped with an inclined-ladder-shaped amplitude amplifying mechanism, and an excitation method for the piezoelectric stick-slip linear motor, and solves the problem that the output mechanical performance of the current piezoelectric stick-slip linear motor is limited caused by difficulty in comprehensive regulation and control on the friction force, and the like. The piezoelectric stick-slip linear motor comprises a base, a pre-loading assembly, an inclined-ladder-shaped stator and a mover, wherein the inclined-ladder-shaped amplitude amplifying switching mechanism of the stator has a micro-displacement amplifying function, and lateral displacement can be generated due to the axial uneven rigidity distribution; meanwhile, the friction driving force is increased while the friction resistance is decreased; the friction regulation and control wave is coupled and overlapped to the sawtooth driving wave in the rapid deformation driving stage of the inclined-ladder-shaped stator so as to reduce the friction resistance between the stator and the mover in the rapid deformation driving stage; and therefore, the comprehensive regulation and control on the friction force is realized, and the mechanical output characteristic of the piezoelectric stick-slip linear motor is improved. The piezoelectric stick-slip linear motor has the characteristics of compact structure, convenience in assembling, high positioning precision, long journey and the like, and can be widely applied to semiconductor processing, and other micro-nano precision driving and positioning technical fields.

Description

technical field [0001] The invention relates to a piezoelectric stick-slip linear motor with an inclined ladder type amplitude amplification 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...

Claims

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Application Information

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IPC IPC(8): H02N2/02H02N2/06
CPCH02N2/02H02N2/065
Inventor 程廷海赵宏伟张邦成柳虹亮秦峰宋兆阳
Owner CHANGCHUN UNIV OF TECH
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