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Resonance compensating circuit and method of piezoelectric assembly

A compensation circuit, series resonant circuit technology, applied in electrical components, generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, etc. work efficiency issues

Active Publication Date: 2018-09-25
INTERFACE TECH CHENGDU CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The amplitude of the piezoelectric component in the traditional piezoelectric component resonant circuit will change due to different operating frequencies, which cannot keep the piezoelectric component at the maximum working efficiency, and there is a problem of low working efficiency

Method used

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  • Resonance compensating circuit and method of piezoelectric assembly
  • Resonance compensating circuit and method of piezoelectric assembly
  • Resonance compensating circuit and method of piezoelectric assembly

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Embodiment Construction

[0038] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0039] The piezoelectric element resonance compensation circuit and method provided in the present application can be applied in the environment of metal touch application. In the metal touch environment, when the piezoelectric component sends a clock signal and the finger touches the metal surface, the sending clock signal includes periodic sine wave, square wave or triangle wave, etc., and the received signal will absorb part of the energy due to the finger. However, the amplitude of the output clock signal will decrease. The resonance compensation circuit and method of ...

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Abstract

The invention relates to a resonance compensating circuit and method of a piezoelectric assembly. The circuit comprises a driving control circuit, a serial resonance circuit, an operational amplifierand the piezoelectric assembly, the driving control circuit is connected with the serial resonance circuit, and the piezoelectric assembly is connected with the a serial resonance circuit via the operational amplifier. The serial resonance frequency is swept according to a preset frequency range, an output voltage value of the serial resonance circuit is recorded, the serial resonance frequency ofthe serial resonance circuit is extracted from a frequency sweeping result, and the working frequency of the piezoelectric assembly is adjusted according to the serial resonance frequency. Thus, amplitude in the output end of the piezoelectric assembly does not change with different operation frequency, the working frequency of the piezoelectric assembly is kept in the maximal working frequency,and the working efficiency of the piezoelectric assembly is improved.

Description

technical field [0001] The present application relates to the field of piezoelectric drive technology, in particular to a resonance compensation circuit and method for a piezoelectric component. Background technique [0002] Piezoelectric materials can generate electric fields due to mechanical deformation, and can also generate mechanical deformation due to the action of electric fields. This inherent electromechanical coupling effect makes piezoelectric materials widely used in engineering. For example, piezoelectric materials have been used to create smart structures that are self-diagnostic, self-adaptive, and self-healing in addition to their self-supporting capabilities. If pressure is applied to the piezoelectric material, it will produce a potential difference, which is called the direct piezoelectric effect, and vice versa, a mechanical stress will be generated when a voltage is applied, which is called the inverse piezoelectric effect. Piezoelectric materials have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/00
CPCH02N2/008
Inventor 魏福呈廖致霖
Owner INTERFACE TECH CHENGDU CO LTD
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