Differential linear piezoelectric motor and working method thereof

A piezoelectric motor, differential technology, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motor, generator/motor, electrical components, etc., can solve the problem of low positioning accuracy and achieve low production cost , Life self-locking when power off, long life effect

Active Publication Date: 2017-08-01
东台城东科技创业园管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to address the defects in the prior art and provide a solution to the contradiction between travel and precision in the field of piezoelectric precision actuation, that is, the position

Method used

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  • Differential linear piezoelectric motor and working method thereof
  • Differential linear piezoelectric motor and working method thereof
  • Differential linear piezoelectric motor and working method thereof

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Experimental program
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Embodiment Construction

[0044] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0045] like figure 1 The structure of the differential linear piezoelectric motor shown includes a mover 1, a stator 2 and a base 3; the mover 1 is fixed on the side plate of the base by bolts; the stator 2 is fixed on the bottom plate of the base by bolts; by controlling the stator 2. The front and rear positions of the base can control the initial pressure between the stator 2 and the mover 1.

[0046] like figure 2 The elastic clamping mechanism shown is two symmetrically arranged pre-compressed leaf springs.

[0047] like Image 6 As shown, the preloaded leaf spring includes a ring frame structure, a flexible hinge and a square plate; the short side of the ring frame structure and the square plate are connected by a flexible hinge; the ring frame is provided with threaded holes, which can be fixedly connected with the support 6; the square ...

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Abstract

The invention discloses a differential linear piezoelectric motor and a working method thereof. A driving foot on a motor stator comprises two groups of symmetric piezoelectric stacking layers parallel with a guide rail, and one group of piezoelectric stacking layers vertical to the guide rail, so as to respectively provide slight vibration in parallel with and vertical to the guide rail direction for the stator driving foot. The differential linear piezoelectric motor has the advantages that by utilizing symmetric periodic signals to excite piezoelectric stacking layer parallel with the guide rail direction, and rectangular wave signals to excite the piezoelectric stacking layer vertical to the guide rail direction, the friction driving characteristic between the motor stator and a rotor has obvious difference between the driving phase and the return phase, so that the movement distance of the motor in the driving phase is greater than the movement distance in the return phase; because the motor has obvious different differential friction characteristic in the frequency range of 0 to 1KHz, when the driving frequency is changed from low frequency to high frequency, the positioning accuracy of the motor is gradually changed from nanometer level to micrometer level, and the macro-micro combined positioning platform with complicated structure may be replaced.

Description

technical field [0001] The invention relates to a differential linear piezoelectric motor, which belongs to the technical field of piezoelectric actuators. Background technique [0002] With the development of micro / nano technology, research in many fields of engineering technology urgently needs sub-micron and micro / nano precision actuators. However, because the traditional electromagnetic motor needs a reduction device, it is difficult to break through in the development direction of miniaturization and high power-to-weight ratio. With the development of materials science, new functional materials have proposed new solutions for these applications. Among them, the discovery of the inverse piezoelectric effect and the emergence of piezoelectric ceramic (PZT) materials with superior properties have made piezoelectric precision actuators more suitable. The research has received extensive attention and has shown broad application prospects in the field of precision actuation....

Claims

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Application Information

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IPC IPC(8): H02N2/04H02N2/06
CPCH02N2/04H02N2/06
Inventor 陈西府李明卢倩王正刚周海
Owner 东台城东科技创业园管理有限公司
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