Cymbals driver based on tangential distortion and its driving method

A tangential deformation and drive technology, applied in piezoelectric/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problem of low displacement conversion efficiency, small displacement, difficult metal elasticity Body deformation and other problems, to achieve the effects of light weight, improved piezoelectric conversion efficiency, and no electromagnetic interference

Inactive Publication Date: 2008-02-13
SOUTH CHINA AGRI UNIV
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Problems solved by technology

However, since d31 is only 1/2 to 1/3 of d33, according to the relationship between d31 and d33, the radial displacement deformation of the piezoelectric ceramic disc is only 1/2 to 1/3 of the axial displacemen...

Method used

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  • Cymbals driver based on tangential distortion and its driving method

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Embodiment

[0017] A kind of cymbal driver based on tangential deformation as shown in Figure 1 and Figure 2, comprises piezoelectric element 3,5 and upper and lower half cymbal type metal elastic body 1,7, and described piezoelectric element 3,5 is Double-layer ring-type piezoelectric ceramic sheets, the ring-type piezoelectric ceramic sheets are polarized in the radial direction, and the two ring-type piezoelectric ceramic sheets are bonded to each other through epoxy resin, and the size is 40mm×30mm×2mm . The upper annular surface of the piezoelectric element 3 and the bottom surface of the upper metal elastic body 1 are bonded to each other by epoxy resin, and the lower annular surface of the piezoelectric element 5 and the bottom surface of the lower metal elastic body 7 are bonded to each other by epoxy resin, A signal input line 4 is welded between the double rings of the piezoelectric elements 3 and 5, a ground wire 2 is welded between the piezoelectric element 3 and the upper m...

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Abstract

The invention discloses a cymbal-shaped driver based on tangential deformation, which comprises a piezoelectric element, an upper metal elastomer and a lower metal elastomer. The piezoelectric element is in double-deck toroidal structure. The metal elastomer is in semi-cymbal shape. The upside of the piezoelectric element is connected with the bottom of the upper metal elastomer. The underside of the piezoelectric element is connected with the bottom of the lower metal elastomer. Signal input lines are connected between the double rings of the piezoelectric element. An earth wire is connected between the piezoelectric element and the upper metal elastomer; another earth wire is connected between the piezoelectric element and the lower metal elastomer. The invention also discloses a drive method of the cymbal-shaped driver. Regarding the driver, the traditional displacement driving power section and actuator are manufactured into one piece. The utility model has the advantages of large displacement, high rigidity, working safely, simple structure, compactness, minitype and thinness, light weight, low dissipation of energy, no noise, no electromagnetic interference, high precision and high resolution and so on, and is applicable for mechanical systems of optics and electronics and so on requiring precise displacement.

Description

technical field [0001] The invention relates to a micromachine using piezoelectric effect, in particular to a cymbal driver based on tangential deformation and its driving method. Background technique [0002] In the existing cymbal drivers, the cymbal composite layer structure usually consists of a piezoelectric ceramic disk and a half-cymbal metal elastomer. The piezoelectric ceramics in the cymbal composite layer structure are usually polarized along the axial direction. After the ceramic is excited and deformed in the axial direction, according to the relationship between d33 and d31 in the piezoelectric coefficient of the piezoelectric ceramic, the axial displacement deformation d33 is converted into the radial displacement deformation of the ceramic disc d31, and the radial displacement deformation of the ceramic disc is It also causes the displacement and deformation of the metal elastic body of the cymbal structure along the axial direction. However, since d31 is on...

Claims

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Application Information

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IPC IPC(8): H02N2/00
Inventor 张铁民
Owner SOUTH CHINA AGRI UNIV
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