Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1995-01-23
1996-09-10
Crosland, Donnie L.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340440, 340671, 36442403, 36442405, 180236, 180404, 180412, 180446, 180242, B60Q 100, G06F 770
Patent
active
055549691
ABSTRACT:
A diagnosing apparatus and method for determining an occurrence of failure in a rear road wheel steering angle sensor of a motor-driven four wheel steering system of an automotive vehicle which can achieve a highly accurate detection of the occurrence of failure in the single rear road wheel steering angle sensor at an appropriate timing irrespective of a sensor failure mode. The detection of failure in the rear road wheel steering angle sensor is carried out on the basis of whether a target deviation between a rear road wheel steering angle sensor value and a target rear road wheel steering angle exceeds a predetermined deviation value and whether a generation time duration during which the target deviation exceeds the predetermined deviation value has continued over a predetermined period of time. In addition, the detection of failure in the rear road wheel steering angle sensor is carried out on the basis of whether an accumulated value of a rear road wheel steering angle estimated deviation .intg..DELTA..delta.# exceeds a predetermined threshold value a when such conditions as a monotonous variation in a servo current applied to the motor in the four wheel steering system, a monotonous variation in a rear road wheel steering angle estimated deviation, and same directional monotonous variations in the servo current and in the rear road wheel steering angle estimated deviation are satisfied.
REFERENCES:
patent: 4961144 (1990-10-01), Yabe et al.
patent: 5048627 (1991-09-01), Eguchi et al.
patent: 5200911 (1993-04-01), Ishikawa et al.
patent: 5257191 (1993-10-01), Takehara et al.
patent: 5313389 (1994-05-01), Yasui
Crosland Donnie L.
Nissan Motor Co,. Ltd.
LandOfFree
Diagnosing apparatus and method for detecting failure in sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Diagnosing apparatus and method for detecting failure in sensor , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diagnosing apparatus and method for detecting failure in sensor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1323657