Title :
Design methodology of single crystal tuning fork gyroscope for automotive applications
Author :
Yachi, M. ; Ishikawa, H. ; Satoh, Y. ; Takahashi, Y. ; Kikuchi, K.
Author_Institution :
Fujitsu Labs. Ltd., Akashi, Japan
Abstract :
This paper presents a method of designing a single crystal tuning fork vibratory gyroscope for stabilizing temperature sensitivity changes and reducing the noise from the external vibration by increasing the inertia moment of the device. As a result a detection mode Q value of 10,000 was realized. A sensitivity change of within ±5% was obtained after correcting the temperature dependence by a thermistor. Simultaneous incrementing of the inertia moment resulted in an enlargement of the fixed area of support. It was also found that the noise level from vibration decreased to less than 1/5
Keywords :
Coriolis force; Q-factor; automobiles; finite element analysis; gyroscopes; lithium compounds; thermal stability; vibrations; Coriolis force; FEM; LiTaO3; automotive applications; design methodology; detection mode Q value; external vibration; inertia moment; noise reduction; single crystal tuning fork gyroscope; small base motion; temperature dependence correction; temperature sensitivity changes; thermistor; vibratory gyroscope; Automotive applications; Ceramics; Design methodology; Energy loss; Equations; Gyroscopes; Laboratories; Noise level; Temperature sensors; Vibrations;
Conference_Titel :
Ultrasonics Symposium, 1998. Proceedings., 1998 IEEE
Conference_Location :
Sendai
Print_ISBN :
0-7803-4095-7
DOI :
10.1109/ULTSYM.1998.762189
