Piezoelectric ceramic piece evaluation method and evaluation system

By dividing the surface of the piezoelectric ceramic sheet into multiple test areas, detecting the voltage value and calculating the average error, the problems of large measurement errors and cumbersome steps in the prior art are solved, and the automated evaluation of the ceramic sheet and higher accuracy are achieved.

CN119666943APending Publication Date: 2025-03-21HARBIN SHENGNUO MEDICAL TECH CO LTD
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Patent Information

Application Number
CN202411897000.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-23
Publication Date
2025-03-21

AI Technical Summary

Technical Problem

In the prior art, when measuring the piezoelectric constant of a piezoelectric ceramic sheet, the static method has large measurement errors, the dynamic law steps are cumbersome and it is impossible to fully judge the overall performance of the ceramic sheet.

Method used

By dividing the surface of the piezoelectric ceramic sheet to be tested into multiple test areas of the same shape, the voltage values ​​of each area are detected, and the average value and relative error are calculated to judge the uniformity and performance of the ceramic sheet.

Benefits of technology

The measurement process is simplified, errors are reduced, and automated evaluation of ceramic sheets is achieved and accuracy is achieved.

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Abstract

The invention discloses a piezoelectric ceramic piece evaluation method and evaluation system, and relates to the field of piezoelectric ceramic piece screening. The method comprises the following steps: dividing the surface of a piezoelectric ceramic piece to be tested into a plurality of identical test areas, detecting voltage values of the test areas, and calculating an average value of the voltage values of the test areas; relative error values of the voltage values of the test areas and the average value are calculated respectively, and when all the relative error values are within a set threshold range, the uniformity of the piezoelectric ceramic piece meets the requirement. The problems that in the prior art, a static method is large in measuring error, and a dynamic method is tedious in testing step are solved.
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