| 黄振伟,傅波,穆飞.夹心式压电超声换能器串并联传输矩阵设计法[J].,2008,27(5):395-400 |
| 夹心式压电超声换能器串并联传输矩阵设计法 |
| Piezoelectric sanawich transducer design via mixed transfer matrix method |
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| 中文摘要: |
| 将压电环片等效为一有源六端网络,考虑预应力螺栓对系统建模的影响,并将其等效为一机械四端网络,基于串并联传输矩阵法,建立了Langevin换能器的总体网络模型,导出其总传输矩阵,进而推算出换能器的共振频率。结果显示该方法比普遍采用的Langevin换能器传输矩阵设计法有更高的参量计算精度。此方法也为分析换能器其它电学参数提供了方便。 |
| 英文摘要: |
| The pre-stressed bolt and the piezo-element are equivalent respectively to a four-pole element description and a six-pole element description in the modeling of the Lan- gevin transducer.Based on the mixed transfer matrix method,the four-pole element de- scription of the Langevin transducer is built up and the total transfer matrix relation is de- rived.The resonance frequency of the transducer is then calculated.Experimental result shows that the mixed transfer matrix is a better vibration model of the Langevin piezoelec- tric transducer than the conventional.This method may also be applied in the analysis of other electrical characteristics of piezoelectric transducers. |
| DOI：10.11684/j.issn.1000-310X.2008.05.014 |
| 中文关键词: Langevin换能器 传输矩阵法 四端网络 预应力螺栓 |
| 英文关键词: Langevin transducer Transfer matrix methods Four-pole description Prestressed bolt |
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