Title:
ANGULAR VELOCITY SENSOR DRIVING CIRCUIT
Document Type and Number:
Japanese Patent JP3932661
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce the starting time, without raising the max. amplification factor of a variable gain amplifier more than prescribed from the view of the stability, etc., in the case of controlling for saturation of the output voltage waveform of the variable gain amplifier, keeping the noise low, and holding the amplitude of a tuning fork oscillator const.
SOLUTION: A switch means 21 for switching the amplification degree of a voltage amplifier 6 provided at a variable gain amplifier 5 or the latter stage thereof is provided to raise the amplification factor by a switch means 21 only when required for starting, and keep the max. amplification factor of the variable gain amplifier 5 at the conventionally prescribed vale after entering at least a final control region.
Inventors:
Toshihiko Ichise
Uemura Takeshi
Jiro Terada
Tamura Masami
Kiyoto Nakazawa
Uemura Takeshi
Jiro Terada
Tamura Masami
Kiyoto Nakazawa
Application Number:
JP8572998A
Publication Date:
June 20, 2007
Filing Date:
March 31, 1998
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
G01C19/56; G01C19/5607; G01C19/5614; (IPC1-7): G01C19/56; G01P9/04
Domestic Patent References:
| JP3108669A | ||||
| JP9033262A | ||||
| JP8105747A | ||||
| JP3072311U | ||||
| JP1148082A | ||||
| JP4042785A |
Attorney, Agent or Firm:
Fumio Iwahashi
Hiroki Naito
Daisuke Nagano
Hiroki Naito
Daisuke Nagano