Title:
SERVO ACCELEROMETER
Document Type and Number:
WIPO Patent Application WO/2013/073232
Kind Code:
A1
Abstract:
A servo accelerometer in which torquer coils (15) are attached to both faces of a pendulum (11), the torquer coils (15) respectively positioned in magnetic gaps (26) of a magnetic circuit, and which comprises a servo circuit (13) that emits a torquer current to the torquer coils (15) according to the displacement of the pendulum (11) by an acceleration input. The servo accelerometer further comprises a temperature sensor (31) which detects the temperature of the magnetic circuits, supplement coils (SFC coils) (32) which are wound around the magnetic circuits, and an electrical circuit which sends current into the supplement coils (32) on the basis of the output from the temperature sensor (31). A magnetic flux which arises from the current flowing into the supplement coils (32) is added to the magnetic flux of the magnetic circuit. It is thus possible to obtain a servo accelerometer which has extremely low change in acceleration sensitivity even if the temperature changes.
Inventors:
SUZUKI TOSHIKAZU (JP)
YAMADA TAKAZUMI (JP)
YAMADA TAKAZUMI (JP)
Application Number:
PCT/JP2012/068084
Publication Date:
May 23, 2013
Filing Date:
July 17, 2012
Export Citation:
Assignee:
JAPAN AVIATION ELECTRON (JP)
SUZUKI TOSHIKAZU (JP)
YAMADA TAKAZUMI (JP)
SUZUKI TOSHIKAZU (JP)
YAMADA TAKAZUMI (JP)
International Classes:
G01P15/13
Foreign References:
| JP2008070356A | 2008-03-27 | |||
| JPS6126625B2 | 1986-06-21 | |||
| JPH07333245A | 1995-12-22 | |||
| JPH05209893A | 1993-08-20 | |||
| JPS61171040A | 1986-08-01 |
Attorney, Agent or Firm:
NAKAO, Naoki et al. (JP)
Naoki Nakao (JP)
Naoki Nakao (JP)
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Claims: