JPS641906A - Optical fiber gyro - Google Patents

Optical fiber gyro

Info

Publication number
JPS641906A
JPS641906A JP15657787A JP15657787A JPS641906A JP S641906 A JPS641906 A JP S641906A JP 15657787 A JP15657787 A JP 15657787A JP 15657787 A JP15657787 A JP 15657787A JP S641906 A JPS641906 A JP S641906A
Authority
JP
Japan
Prior art keywords
gain
luminous element
amplifier circuit
drift
optical output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP15657787A
Other languages
Japanese (ja)
Other versions
JPH011906A (en
JP2572391B2 (en
Inventor
Hiroshi Araki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62156577A priority Critical patent/JP2572391B2/en
Publication of JPS641906A publication Critical patent/JPS641906A/en
Publication of JPH011906A publication Critical patent/JPH011906A/en
Application granted granted Critical
Publication of JP2572391B2 publication Critical patent/JP2572391B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PURPOSE: To prevent excess/shortage of received optical power and deterioration of life by driving the luminous element with constant current to control gain for change in luminous output intensity due to environmental change, etc.
CONSTITUTION: The photodetector 8 and amplifier circuit 10 are provided to allow the optical output by the luminous element 1 to be monitored and to allow the gain of amplifier circuit 9 to be controlled by providing the gain adjusting circuit 11. Then, the microcomputer 16 is used to control feedback of gain being based on the monitoring result of optical output for enabling drift due to optical output intensity change of luminous element 1 not to be included in the output of amplifier circuit 9. Namely, the drift of oscillating wavelength of luminous element 1 is eliminated by driving the luminous element 1 with constant current and the drift given to the detection of rotary angle speed is canceled by applying gain control in the detection signal system.
COPYRIGHT: (C)1989,JPO&Japio
JP62156577A 1987-06-25 1987-06-25 Hikaribaiyairo Expired - Lifetime JP2572391B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62156577A JP2572391B2 (en) 1987-06-25 1987-06-25 Hikaribaiyairo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62156577A JP2572391B2 (en) 1987-06-25 1987-06-25 Hikaribaiyairo

Publications (3)

Publication Number Publication Date
JPS641906A true JPS641906A (en) 1989-01-06
JPH011906A JPH011906A (en) 1989-01-06
JP2572391B2 JP2572391B2 (en) 1997-01-16

Family

ID=15630804

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62156577A Expired - Lifetime JP2572391B2 (en) 1987-06-25 1987-06-25 Hikaribaiyairo

Country Status (1)

Country Link
JP (1) JP2572391B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4110374A1 (en) * 1990-03-29 1991-10-10 Hitachi Ltd DEVICE FOR DETECTING THE ANGLE SPEED, DEVICE FOR DETECTING THE ACCELERATION AND DEVICE FOR CONTROLLING THE MOVEMENT FOR A MOVING BODY
US8100678B2 (en) * 2007-01-30 2012-01-24 Kobe Steel, Ltd. Tire vulcanizing machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5963512A (en) * 1982-10-04 1984-04-11 Mitsubishi Electric Corp Optical fiber gyroscope

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5963512A (en) * 1982-10-04 1984-04-11 Mitsubishi Electric Corp Optical fiber gyroscope

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4110374A1 (en) * 1990-03-29 1991-10-10 Hitachi Ltd DEVICE FOR DETECTING THE ANGLE SPEED, DEVICE FOR DETECTING THE ACCELERATION AND DEVICE FOR CONTROLLING THE MOVEMENT FOR A MOVING BODY
US8100678B2 (en) * 2007-01-30 2012-01-24 Kobe Steel, Ltd. Tire vulcanizing machine

Also Published As

Publication number Publication date
JP2572391B2 (en) 1997-01-16

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