Zero-point correction device for a gravity-type accelerometer

Details Zero-point correction device for a gravity-type accelerometer Zero-point correction device for a gravity-type accelerometer

1991-12-23

1994-04-26

Chin, Gary

Boots, shoes, and leggings

36442602, 364566, 36457102, 73 1D, G01L 2500

Patent

active

053072740

ABSTRACT:
A zero-point correction device for a gravity-type accelerometer employed in a vehicle having wheels, includes a calculator for calculating an estimated vehicle acceleration Aw based on the wheel speed, and a detector for detecting a gravitationally detected acceleration Am based on said gravity-type accelerometer. A subtractor is provided for subtracting a correction amount Ao obtained in each operation cycle from the gravitationally detected acceleration Am to produce a corrected acceleration Ac which is a corrected version of said gravitationally detected acceleration Am. The correction amount Ao for the present operation cycle is obtained by adding to the correction amount Ao obtained in the previous cycle, a value commensurate with a difference between the estimated vehicle acceleration Aw and the corrected acceleration Ac.

REFERENCES:
patent: 4188816 (1990-02-01), Mairson
patent: 4336718 (1982-06-01), Washburn
patent: 4470124 (1984-09-01), Tagami et al.
patent: 5048319 (1991-09-01), Neuhaus
patent: 5065612 (1991-11-01), Ooka et al.
patent: 5146417 (1992-09-01), Watson

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