DETECTING STATE JUDGING DEVICE FOR LONGITUDINAL ACCELERATION SENSOR

Japanese Patent JP3875391

B2

PROBLEM TO BE SOLVED: To provide a detecting state judging device for longitudinal acceleration sensor which can quickly detect an abnormality by accurately judging the detecting state of a longitudinal acceleration sensor even when a vehicle is in an inclined state on a slope.
SOLUTION: A vehicle is provided with a longitudinal acceleration sensor GS which detects the longitudinal deceleration (including acceleration) of the vehicle and a wheel speed sensor WS which detects the speed of each wheel WL and an estimated car body deceleration computing means ED computes the estimated car body deceleration of the vehicle based on the speed of each wheel detected by the sensor WS. Then, a rate-of-change deviation computing means DF computes the deviation between the rates of change of the estimated car body deceleration and the deceleration detected by the sensor GS. Thereafter, a detecting state judging means DT judges the detecting state of the sensor GS as normal when the deviation between the rates of change computed by the computing means DF falls within a prescribed range. When the deviation does not fall with the range, the judging means DT judges the detecting state of the sensor GS as abnormal.

Akitaka Nishio
Heihisa Kato
Masaki Sakano
Yasuhiro Abe
Koichi Kondo
Hiroyuki Matsubayashi

JP3427298A

January 31, 2007

January 30, 1998

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Aisin Seiki Co., Ltd.
TOYOTA JIDOSHA KABUSHIKI KAISHA

G01P21/00; B60T8/00; B60T8/171; B60T8/24; G01P15/00; (IPC1-7): G01P21/00; B60T8/00; B60T8/24; G01P15/00

JP8076931A
JP10010152A

Kazuma Ikeda

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