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Composite array magnetoelectric transducer adopting magnetostriction and piezoelectric material of poly-energy accumulator

A technology of magnetoelectric transducers and piezoelectric materials, applied in piezoelectric/electrostrictive/magnetostrictive devices, piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, etc., can Solve problems such as limiting the application field of magnetoelectric transducers, and achieve the effects of reducing energy conversion loss, increasing output amplitude, and broadening output frequency bandwidth

Inactive Publication Date: 2011-09-21
CHONGQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the contradiction between high quality factor and wide frequency band limits the application fields of magnetoelectric transducers

Method used

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  • Composite array magnetoelectric transducer adopting magnetostriction and piezoelectric material of poly-energy accumulator
  • Composite array magnetoelectric transducer adopting magnetostriction and piezoelectric material of poly-energy accumulator
  • Composite array magnetoelectric transducer adopting magnetostriction and piezoelectric material of poly-energy accumulator

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Embodiment Construction

[0012] In the existing technology, because it is difficult to further greatly improve the magnetoelectric effect through direct compounding of materials, many researchers have focused their research on the energy collection and transmission methods in the energy conversion process. It is against this background that the inventor proposes Transducer structure of the present invention: see figure 1 , the structure of the present invention is composed of a fixed rod 1 and a plurality of variable-amplitude resonant structures 2, and the resonant frequencies of each variable-amplitude resonant structure 2 are not the same; The resonant structures 2 are fixed in the same direction, and the longitudinal center of gravity of each amplitude-changing resonant structure 2 is on the same straight line; the components are insulated.

[0013] This structure of multiple variable-amplitude resonant structures 2 in an array not only allows the output voltage of the transducer to be superimpose...

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Abstract

The invention discloses a composite array magnetoelectric transducer adopting a magnetostriction and piezoelectric material of a poly-energy accumulator, which consists of a fixing rod and a plurality of variable amplitude resonance structures, wherein the resonance frequencies of the variable amplitude resonance structures are different; the gravity center of each variable amplitude resonance structure is fixed on the fixing rod, the fixing directions of the variable amplitude resonance structures are same, and longitudinal gravity center lines of the variable amplitude resonance structure are on the same straight line; and each device is insulated with others. The invention has the technical effect of providing a magnetoelectric transducer which can broaden the output frequency band width, improve the output amplitude and reduce the energy conversion loss.

Description

technical field [0001] The invention relates to a "magnetic-mechanical-electric" energy conversion technology, in particular to a magnetostrictive and piezoelectric material composite array magnetoelectric transducer using multi-concentrators. Background technique [0002] Since the 1970s, researchers have been conducting unremitting research on magnetoelectric conversion technology; at present, research at home and abroad is mainly focused on giant magnetostriction and composite structures of different piezoelectric materials, as well as different materials, different The magnetoelectric conversion characteristics under the conditions of stacking number, working mode, coupling mode, composite volume ratio, frequency, etc., hope to improve the magnetoelectric conversion efficiency through the material's own characteristics. Due to the limitation of the characteristics of the existing materials, the quality factor of the composite material structure is low, and the loss in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L41/113H02N2/18
Inventor 文玉梅李平
Owner CHONGQING UNIV
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