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Quartz Angular Rate Sensor for Automotive Application
Technical Paper
1999-01-0934
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A new compact angular rate sensor using quartz crystal was developed for automotive braking systems or vehicle navigation systems. The sensor's operation is based upon Coriolis force imposed on a vibrating bimorph quartz tuning fork. The reasons we used quartz crystal for the tuning fork are summarized below:
Quartz crystal's piezoelectric characteristics are beneficial for both inducing vibration in the driving tine elements and detecting Coriolis forces on the sense tine element.
Quartz has stable resonant characteristics due to its high Q value (low energy loss).
The control circuit has a one-chip C-MOS ASIC which consists of both a digital memory and an analog circuit. Adjustments of gain, zero and temperature offset are achieved using digital calibration.
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Authors
- Toshihiko Ichinose - Matsushita Electronic Components Co., Ltd.
- Yasushi Ishiai - Matsushita Electronic Components Co., Ltd.
- Masakazu Hatanaka - Matsushita Electronic Components Co., Ltd.
- Jyunich Yukawa - Matsushita Electronic Components Co., Ltd.
- Shusaku Kawasaki - Matsushita Electronic Components Co., Ltd.
- Takeshi Uemura - Matsushita Electronic Components Co., Ltd.
Citation
Ichinose, T., Ishiai, Y., Hatanaka, M., Yukawa, J. et al., "Quartz Angular Rate Sensor for Automotive Application," SAE Technical Paper 1999-01-0934, 1999, https://doi.org/10.4271/1999-01-0934.Also In
References
- Kudou S. et al “Ultrasonic Technology 6 9 5 22 1994
- Ichinose T. et al “SAE Paper 950535 1995
- Quartz Crystal Industry Trade Association of Japan “Quartz Crystal Device:Study and Application” 1991
- Ichinose T. et al “Ultrasonic Technology Vol.6, No,9 P42∼47” 1994