Piezoelectric element partition polarization device

Abstract

The invention discloses a piezoelectric element partition polarization device, and belongs to the technical field of polarization of materials with piezoelectric characteristics. The device comprisesa partition voltage adjusting module, a probe adjusting module and a polarization control module, the partition voltage adjusting module can adjust the polarization voltage of each subarea to realizeindependent control of the polarization subarea electric field; the probe adjusting module can realize accurate positioning and synchronous polarization of a plurality of hundred-micron micro electrodes by adopting a method of matching an elastic telescopic probe with a probe positioning bracket; and the polarization control module can control a time change curve of total voltage and polarizationtemperature required by polarization. According to the invention, independent control of the multi-partition polarization electric field is realized, the multi-partition piezoelectric element can be synchronously polarized at one time, and the problem of inconsistent thermal depolarization and partition polarization intensity of the piezoelectric element caused by repeated polarization is avoided;the problems of difficult operation, difficult positioning, single polarization area and the like in the traditional method are solved, and the polarization quality of the partitioned piezoelectric element is improved.

Description

technical field [0001] The invention belongs to the technical field of polarization of materials with piezoelectric characteristics, in particular to a partitioned polarization device for piezoelectric elements. Background technique [0002] Piezoelectric elements have a special piezoelectric effect, which can realize the mutual conversion between mechanical vibration and electrical signals, and are widely produced into various high-performance piezoelectric devices. These devices have the characteristics of sensing, execution and control, and are widely used in medical Diagnosis, structural control, aerospace, weaponry and other fields have broad application prospects. [0003] Polarization is an important link to obtain piezoelectric properties of piezoelectric elements, and is the basis for realizing various functional characteristics of piezoelectric devices. Normally, polarization is a process in which a polarizing electric field is applied above the Curie point of the...

AI Technical Summary

Problems solved by technology

The invention adopts the method of elastic telescopic probes and probe positioning brackets to realize precise positioning and synchronous polarization of a plurality of hundreds of micron-level micro-electrodes, improves the polarization quality of partitioned piezoelectric elements, and solves the problem of polarization in traditional methods. Difficult to operate, difficult to locate, single polarization area, etc.

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