Title:
PROCESS FOR REDUCING BIAS ERROR IN A VIBRATING STRUCTURE SENSOR
Document Type and Number:
WIPO Patent Application WO1999002942
Kind Code:
A3
Abstract:
Bias error is reduced in a vibrating structure sensor having primary and secondary pick-off means (2, 3) separated by a fixed angular amount (45 DEG ) with respect to the vibrating structure by summing a proportion of the primary pick-off means output signal (10) into the secondary pick-off means output signal (15) or subtracting a proportion of the primary pick-off means output signal (10) from the secondary pick-off means output signal (15) effectively to reduce or increase the angular separation of the secondary pick-off means (3) from the primary drive means (1) by an amount sufficient to set the rate output signal from the vibrating structure to zero and thereby minimise bias error.
Inventors:
FELL CHRISTOPHER PAUL (GB)
HOPKIN IAN DAVID (GB)
TOWNSEND KEVIN (GB)
HOPKIN IAN DAVID (GB)
TOWNSEND KEVIN (GB)
Application Number:
PCT/GB1998/002057
Publication Date:
April 27, 2000
Filing Date:
July 13, 1998
Export Citation:
Assignee:
BRITISH AEROSPACE (GB)
FELL CHRISTOPHER PAUL (GB)
HOPKIN IAN DAVID (GB)
TOWNSEND KEVIN (GB)
FELL CHRISTOPHER PAUL (GB)
HOPKIN IAN DAVID (GB)
TOWNSEND KEVIN (GB)
International Classes:
G01C19/567; G01L1/10; G01P15/10; (IPC1-7): G01C19/56
Foreign References:
| EP0411849B1 | 1993-08-25 | |||
| GB2272053A | 1994-05-04 |
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