Temperature dependence of zero offset of piezoelectric-ceramic cylinder vibratory gyroscope

被引：4

作者：

Abe, H ^{[1
]}

Yoshida, T ^{[1
]}

Kobayashi, H ^{[1
]}

Nakamura, K ^{[1
]}

机构：

[1] TOHOKU UNIV,FAC ENGN,DEPT ELECT COMMUN,AOBA KU,SENDAI,MIYAGI 980,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1996年 / 35卷 / 9B期

关键词：

vibratory gyroscope; zero offset; piezoelectric device; equivalent circuit analysis; piezoelectric-ceramic material;

D O I：

10.1143/JJAP.35.5031

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this paper, we describe a piezoelectric-ceramic cylinder vibratory gyroscope with interdigital electrodes. Increasingly stable gyroscopes have been required as direction sensors of car navigation systems. The temperature dependence of zero offset is one of the most important characteristics of such gyroscopes. The proposed an expression for the temperature dependence of zero offset using an equivalent circuit analysis. The temperature dependence of zero offset is derived by using the relationship between vibratory imbalances and temperature dependence of the mechanical quality factor Q(m) of the piezoelectric-ceramic material. The validity of this expression was empirically proved. By reducing the temperature dependence of the piezoelectric-ceramic material, we could decrease the temperature dependence of zero offset of the vibratory gyroscope.

引用

页码：5031 / 5033

页数：3