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Low-speed high-precision rotation driving device based on piezoelectric actuation principle

A rotary drive device and piezoelectric actuation technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc. problem, to achieve the effect of good low-speed performance, high rotation accuracy and high versatility

Inactive Publication Date: 2021-03-26
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the defects of the existing technical solutions, the present invention proposes a low-speed and high-precision rotary drive device based on the principle of piezoelectric actuation, which has the advantages of high rotation precision and good low-speed performance, and solves the problem of poor low-speed rotation stability of the existing rotary drive device. Technical problems of ensuring rotation accuracy and large volume and weight

Method used

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  • Low-speed high-precision rotation driving device based on piezoelectric actuation principle

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Embodiment Construction

[0020] The specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, the low-speed high-precision rotary drive device based on the principle of piezoelectric actuation in this embodiment includes at least one drive unit: a driving piezoelectric stack 4 and a clamping piezoelectric stack 6, both of which are arranged in a cross shape, preferably , the driving piezoelectric stack 4 and the clamping piezoelectric stack 6 are respectively arranged along the X direction and the Y direction;

[0022] The driving piezoelectric stack 4 can realize the X-direction elongation movement after being powered on, and the retracting movement can be realized after the power is turned off, and the stretching and reciprocating motion of the driving piezoelectric stack 4 can be realized through repeated power on and off; the clamping piezoelectric stack 6 can be Realize the Y-direction elongation movem...

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Abstract

The invention provides a low-speed high-precision rotation driving device based on a piezoelectric actuation principle, which comprises at least one driving unit, the driving unit comprises a drivingpiezoelectric stack and a clamping piezoelectric stack, one end of the driving piezoelectric stack is fixed, and the other end of the driving piezoelectric stack stretches out and draws back along theX direction and is used for being in contact with the circumferential side surface of a driven rotating wheel. One end of the clamping piezoelectric stack is fixed, the other end of the clamping piezoelectric stack stretches out and draws back in the Y direction and is used for making contact with the telescopic end of the driving piezoelectric stack to drive the driving piezoelectric stack to deflect, and the driving piezoelectric stack and the clamping piezoelectric stack are matched with each other to drive the rotating wheel to rotate around the center axis of the rotating wheel. In the design process, the using requirements of the space mechanism technology are fully considered, and the driving device has the advantages of being high in rotating precision, good in low-speed performance, capable of rotating forwards and backwards, large in locking rigidity and high in reliability.

Description

technical field [0001] The invention relates to the technical field of rotary drive devices, in particular to a low-speed high-precision rotary drive device based on piezoelectric actuation principles. Background technique [0002] Modern satellites play a pivotal and irreplaceable role in the national economy, undertaking many important tasks closely related to people's lives such as communication, navigation, meteorological observation, and space remote sensing. With the continuous complexity of satellite missions, space mechanism technologies such as unfolded structure, rotating scanning structure, and space intelligent structure have been widely used, effectively expanding and improving the functions of satellites. In order to complete the functions of the above-mentioned space mechanism, it must be equipped with reliable and stable rotating drive components to realize deployment, scanning and linear motion. [0003] Aiming at the requirement of rotary drive technology,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/00H02N2/02H02N2/04H02N2/06
CPCH02N2/001H02N2/028H02N2/046H02N2/065
Inventor 王萌孙蓓蓓李雪梅
Owner SOUTHEAST UNIV