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Title:
APPARATUS FOR ATTENTUATING VIBRATION OF ACCELEROMTER SIGNAL OF MEMS ATTITUDE HEADING REFERENCE SYSTEM, AND METHOD FOR SAME
Document Type and Number:
WIPO Patent Application WO/2014/119825
Kind Code:
A1
Abstract:
The present invention relates to an apparatus for attenuating vibrations of an accelerometer signal for an MEMS attitude heading reference system, and a method for same, the apparatus allowing, in a MEMS attitude heading reference system, the accuracy of roll, pitch and attitude estimations thereof to be raised by separating and blocking a continuous low-frequency dynamic acceleration signal, generated due to vibrations, from among the accelerometer signals which are combined with gyro sensor signals. An apparatus for attenuating vibrations of an accelerometer signal for an MEMS attitude heading reference system according to the present invention comprises: a gyro sensor attitude measurement unit (100) for extracting attitude information of a transporting body by analyzing a signal of a two-axis gyro sensor; an accelerometer attitude measurement unit (200) for extracting the attitude information of the transporting body by analyzing a three-axis accelerometer signal, wherein the attitude information is extracted for the transporting body for which vibration is attenuated by separating the dynamic accelerometer component, generated due to vibration of the transporting body, included in the three-axis accelerometer signal; and an integrated filtering unit (300) for integrating and outputting the attitude information output by the gyro sensor attitude measurement unit (100) and the accelerometer attitude measurement unit (200). Thus, the present invention can accurately estimate the attitude of a transporting body by means of the gyro sensor signal and the accelerometer signal for which vibrations are attenuated.

Inventors:
KIM TAE-YEON (KR)
PARK JIN-HA (KR)
KIM CHUNG-IL (KR)
Application Number:
PCT/KR2013/004695
Publication Date:
August 07, 2014
Filing Date:
May 29, 2013
Export Citation:
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Assignee:
CORESENSE CO LTD (KR)
International Classes:
G01C19/5776; G01P15/14
Foreign References:
US6498996B12002-12-24
US20070100550A12007-05-03
US20090254279A12009-10-08
US20020169553A12002-11-14
Other References:
KIM, TAE YEON ET AL.: "Adaptive Notch Filter Design for Vibration Reduction of an Attitude Reference System", COLLECTION OF DISSERTATIONS OF 2012 INFORMATION AND CONTROL SYSTEMS SYMPOSIUM(ICS '12, 2012, pages 139 - 140
Attorney, Agent or Firm:
YOU, BYUNG SUN (KR)
유병선 (KR)
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