System for detecting abnormality of steering angle sensor
First Claim
1. A system for detecting the abnormality of a steering angle sensor, comprisinga steering angle sensor for detecting the steering angle of a wheel of a vehicle to be steered,a reference motional parameter determining means for determining a reference value of a vehicle motional parameter on the basis of said steering angle,a motional parameter detector means for detecting a vehicle motional parameter indicative of a physical quantity equal to that of said reference motional parameter, andan abnormality judging apparatus for judging the abnormality of said steering angle sensor by use of said reference motional parameter and said vehicle motional parameter.
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Accused Products
Abstract
A system for detecting the abnormality of a steering angle sensor comprises a steering angle sensor for detecting the steering angle of a wheel of a vehicle to be steered, a reference motional parameter determining apparatus for determining a reference value of a vehicle motional parameter on the basis of the steering angle, a motional parameter detector apparatus for detecting a vehicle motional parameter indicative of the same physical quantity as the reference motional parameter, and an abnormality judging apparatus for judging the abnormality of the steering angle sensor by use of the reference motional parameter and the vehicle motional parameter. It is possible to reliably and promptly detect the abnormality of the steering angle sensor. Further, abnormality judging conditions are stabilized by a delaying timer adapted to start the judgement by the abnormality judging apparatus at a given interval after satisfaction of the abnormality judging conditions, and this contributes to a further correct judgement.
28 Citations
7 Claims
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1. A system for detecting the abnormality of a steering angle sensor, comprising
a steering angle sensor for detecting the steering angle of a wheel of a vehicle to be steered, a reference motional parameter determining means for determining a reference value of a vehicle motional parameter on the basis of said steering angle, a motional parameter detector means for detecting a vehicle motional parameter indicative of a physical quantity equal to that of said reference motional parameter, and an abnormality judging apparatus for judging the abnormality of said steering angle sensor by use of said reference motional parameter and said vehicle motional parameter.
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7. A system for detecting the abnormality of a steering angle sensor, comprising
a steering angle sensor for detecting the steering angle of a wheel of a vehicle to be steered, a motional parameter detector means for detecting a motional parameter indicative of a turning motion of the vehicle, an abnormality judging apparatus for judging the abnormality of the steering angle sensor by use of said steering angle and said motional parameter, and a delaying means for starting the judgement of the abnormality of the steering angle sensor by said abnormality judging apparatus at a predetermined interval after detection of the repose state of said steering angle, and continuing the execution of the judgement during continuation of the repose state.
Specification