Method and apparatus for correcting drift errors in an angular r

Details Method and apparatus for correcting drift errors in an angular r Method and apparatus for correcting drift errors in an angular r

1991-08-27

1994-03-22

Harvey, Jack B.

Boots, shoes, and leggings

364565, 73497, G01P 2100, G01P 300

Patent

active

052970280

ABSTRACT:
An angular rate sensor for a vehicle navigation system stores an environmental temperature and a related null voltage each time the vehicle stops. The pairs of data points are stored in a non-volatile look-up table for use during vehicle motion. During vehicle motion, the environmental temperature is measured, and a null voltage is selected from the look-up table corresponding to the measured temperature. The null voltage is used to correct drift offset. Interpolation is used when data keyed to the measured temperature cannot be found in the look-up table.

REFERENCES:
patent: 4593359 (1986-06-01), Sadeh
patent: 4651576 (1987-03-01), Luke
patent: 4914611 (1990-04-01), Yamanaka et al.

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