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X-type structure resonant piezoelectric actuator capable of being bidirectionally driven and actuation method thereof

A piezoelectric actuator, two-way drive technology, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, generators/motors, etc., can solve unfavorable miniaturization, high cost, drive signal Control problems such as complex control, to achieve the effects of easy miniaturization and improvement, high operating speed, and simple driving signal control

Active Publication Date: 2022-03-25
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are problems such as complex drive signal control, high cost, and unfavorable miniaturization

Method used

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  • X-type structure resonant piezoelectric actuator capable of being bidirectionally driven and actuation method thereof
  • X-type structure resonant piezoelectric actuator capable of being bidirectionally driven and actuation method thereof
  • X-type structure resonant piezoelectric actuator capable of being bidirectionally driven and actuation method thereof

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Embodiment Construction

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Such as figure 1 As shown in the present invention, a bidirectionally driven X-shaped structural resonant piezoelectric actuator includes a first driving track 1, a second driving track 2 parallel to the first driving track 1, and a first negative motion driving foot. 3. The first negative movement contact foot 3-1 located at the end of the first negative movement driving foot 3 and in contact with the first driving track 1 is opposite to the first driving track 1 and the first negative movement driving foot 3 The second negative movement driving foot 4 arranged symmetrically on the central axis of the two driving tracks 2, the second negative movement contact foot 4-1 located at the end of the second negative movement driving foot 4 and in contact with the second driving track 2, the second negative movement contact foot 4-1 ...

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PUM

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Abstract

The invention discloses an X-type structure resonant piezoelectric actuator capable of being bidirectionally driven and an actuation method thereof. The actuator comprises a driving track, an X-type structure and a group of piezoelectric driving elements, wherein the X-type structure is symmetrical about the axis of the movement direction. The actuator is excited by a single-phase sinusoidal voltage, a first-order resonance mode of the driving foot is excited, and the driving track is shifted to realize large-stroke linear driving. The positive driving foot and the negative driving foot of the actuator have different rigidity characteristics, and the mode of the driving foot in a certain direction can be excited by changing the frequency of a single-phase signal, so that the control of the driving direction is realized. Compared with resonant actuators driven by other piezoelectric materials, the resonant actuator has the advantages of being simple in structure, simple in driving signal and easy to miniaturize.

Description

technical field [0001] The invention relates to an actuating device, specifically a piezoelectric actuator with an X-shaped structure, which is driven by the principle of resonance and capable of bidirectional large-stroke linear displacement and an actuating method thereof. Background technique [0002] In recent years, piezoelectric actuators have continued to develop, supporting the development and construction of important industries such as national defense, aerospace, and machinery manufacturing. A wide variety of piezoelectric actuators have also been derived. Piezoelectric actuators driven by resonance principles have The characteristics of fast action speed and large thrust-to-weight ratio have been widely concerned by people. In the resonant and ultrasonic piezoelectric actuators that can be driven bidirectionally, multiple sets of driving elements and multiple driving control signals are required to achieve bidirectional motion on a single degree of freedom, such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/04
CPCH02N2/04
Inventor 徐明龙宋思扬邵恕宝邵妍
Owner XI AN JIAOTONG UNIV
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