Piezoelectric torque actuator based on planar two-level displacement enlargement mechanism and actuating method thereof

A technology of displacement amplification mechanism and plane two, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., to achieve the effect of large rotation angle, light structure and low power consumption

Inactive Publication Date: 2016-03-23
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is required to output output angular displacement and torque, and at the same time have the functions of anti-electromagnetic interference, simple structure, non-stepping, low power consumption, large rotation angle, small size, and light weight, traditional piezoelectric actuators are difficult to meet all the above conditions.

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  • Piezoelectric torque actuator based on planar two-level displacement enlargement mechanism and actuating method thereof
  • Piezoelectric torque actuator based on planar two-level displacement enlargement mechanism and actuating method thereof
  • Piezoelectric torque actuator based on planar two-level displacement enlargement mechanism and actuating method thereof

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Such as figure 1 , figure 2 and image 3 As shown, the present invention is based on the piezoelectric torque actuator of the planar secondary displacement amplifying mechanism, comprising a casing 1, and a planar secondary displacement amplifying mechanism 2 is placed in the groove of the casing 1; the planar secondary displacement amplifying mechanism 2 includes an internal rhombus Ring 5, a piezoelectric stack 3 placed between the long axes of the inner rhomboid ring 5; an outer rhomboid ring 6 arranged outside the inner rhomboid ring 5 and perpendicular to the inner rhomboid ring 5, the long axis of the outer rhomboid ring 6 is in line with the inner rhomboid ring The short axis of the ring 5 is coaxial; the torsion wheel 4 is installed on the center hole of the outer surface of the shell 1, and the inner center hole of ...

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Abstract

The invention provides a piezoelectric torque actuator based on a planar two-level displacement enlargement mechanism and an actuating method thereof. The actuator comprises a shell, a planar two-level displacement enlargement mechanism, a piezoelectric stack and a torsion wheel, wherein the planar two-level displacement enlargement mechanism is placed in the shell; the piezoelectric stack is placed in the planar two-level displacement enlargement mechanism; the torsion wheel is mounted on the shell; the central hole of the torsion wheel sleeves an external diamond ring intermediate shaft of the planar two-level displacement enlargement mechanism; after the piezoelectric stack is powered up, the piezoelectric stack elongates, the short shaft direction of an external diamond ring is elongated, a flexible hinge rotates and deforms, the external diamond ring intermediate shaft rotates to drive the torsion wheel to rotate an angle, thus realizing the output angle displacement and torque function. The piezoelectric torque actuator disclosed by the invention has the characteristics of electromagnetic interference resistance, simple structure, low power consumption, large rotation angle, small size and light weight.

Description

technical field [0001] The invention relates to the technical field of actuators, in particular to a piezoelectric torque actuator and an actuating method based on a planar two-stage displacement amplifying mechanism. Background technique [0002] The piezoelectric actuator based on the inverse piezoelectric effect has the advantages of high resolution, large output force, fast response, low power consumption, and light structure. With the advancement of material preparation and processing technology, new piezoelectric actuators can meet different technical requirements. Therefore, piezoelectric material actuators are one of the most widely used intelligent drive devices in many fields such as machinery, ships, automobiles, civil engineering, and aerospace. [0003] Since the output displacement of the piezoelectric material is a micro-displacement, in order to realize the angular displacement actuation, generally multiple piezoelectric stacks are used for step-by-step actu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/12
CPCH02N2/12
Inventor 马国亮徐明龙武彤晖周媛高博
Owner XI AN JIAOTONG UNIV
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