Two-dimensional piezoelectric motor using relative friction to reduce resistance and control method thereof

A drag reduction, electric motor technology, applied in piezoelectric/electrostrictive or magnetostrictive motors, electrical components, generators/motors, etc., can solve the problem of increasing system complexity and instability, complex structure, etc. problem, to achieve the effect of simple structure, large moving range and large thrust
CN109525142AActive Publication Date: 2019-03-26HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
Publication Date
2019-03-26

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Abstract

The invention provides a two-dimensional piezoelectric motor using the relative friction to reduce the resistance. The two-dimensional piezoelectric motor comprise a sliding plate, an XY deforming piezoelectric body and a base. The XY deforming piezoelectric body is arranged between the base and the sliding plate; and one end of the XY deforming piezoelectric body is fixed with the base and the other end is fixed with the sliding plate. The two-dimensional piezoelectric motor is characterized by also including an X telescopic deformation piezoelectric body and a Y telescopic deformation piezoelectric body that are mutually fixed to form a structure with independently controllable X-direction deformation and Y-direction deformation, wherein the formed structure is a vertical deformation structure. Positive pressures enabling the two ends of the X telescopic deformation piezoelectric body, the two ends of the Y telescopic deformation piezoelectric body, and the sliding plate to be pressed mutually simultaneously are set. For the motor, the invention also provides a corresponding control method. The two-dimensional piezoelectric motor has advantages of simple structure, large thrust,high positioning precision, no electromagnetic interference and large moving range and the like.
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Description

technical field

[0001] The invention relates to a two-dimensional piezoelectric stepper, in particular to a two-dimensional piezoelectric motor which utilizes opposite friction to reduce driving resistance, and belongs to the technical field of piezoelectric positioners. Background technique

[0002] Due to its advantages of small size, high precision, and self-locking when power is off, piezoelectric motors are used in various fields that require precise positioning, such as optical focusing, micro-electromechanical product processing, etc. However, piezoelectric motors tend to output less thrust than conventional electromagnetic motors. To achieve wide application, it is still necessary to increase its own thrust while ensuring high precision and high rigidity.

[0003] In order to increase the thrust, we proposed and implemented a five-piezoelectric body stack piezoelectric motor in 2014, which is pressed by opposing friction force. For details, see the American scientif...

Claims

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