ANGLE VELOCITY SENSOR

Japanese Patent JP3244923

B2

PURPOSE: To provide an angle velocity sensor which has a wide temperature range, has a small change in a temperature offset output, and is inexpensive.
CONSTITUTION: First and second tuning fork type crystal vibrators 21 and 26 wherein electrodes 22 and 27 are provided on the peripheral surface of one or other vibration arms 24, 25, 29, and 30 of a nearly U-shaped tuning fork type crystal blank with a shape in that one and the other symmetrical vibration arms 24, 25:29, 30 of a square section are connected in one piece in parallel by supporting parts 23 and 28 are sealed at supporting parts 23 and 28 via a bonding group 31 while they oppose in parallel. The first tuning fork crystal vibrator 21 is used as a drive side tuning fork and the second tuning fork crystal vibrator 26 is used as a detection side tuning fork and the vibration according to the Coriolis force of the drive side tuning fork is transferred to the detection side tuning fork. The detection side tuning fork detects the electrical signal according to the transferred vibration via the electrode 27 and detects an angular velocity from that level.

Tomio Yoshida
Ruins Nobuhisa
Toshihiko Ichise
Jiro Terada
Atsushi Otomo
Jiro Ota
Koichiro Ota
Minoru Ishihara

JP4904694A

January 07, 2002

March 18, 1994

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Matsushita Electric Industrial Co., Ltd
Nippon Denpa Industry Co., Ltd.

G01P3/00; G01C19/56; G01C19/5607; (IPC1-7): G01C19/56; G01P3/00; G01P9/04

JP7260491A
JP7260489A
JP7260490A
JP4324311A
JP6073414A
JP3291517A
JP3113310A
JP6416911A
JP1236808A

Akio Miyai

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