Method and apparatus for determining failure of vehicle steering

Details Method and apparatus for determining failure of vehicle steering Method and apparatus for determining failure of vehicle steering

1990-03-09

1991-04-16

Marmor, Charles A.

Boots, shoes, and leggings

731181, 180141, G01M 1900, B62D 100

Patent

active

050088238

ABSTRACT:
For determining a failure of a steering sensing device of a motor vehicle with a four-wheel steering system wherein rear wheels are also steered responsive to the operation of a steering wheel, there is provided a steering angle sensor for detecting steering angle of the steering shaft and a steering speed sensor for detecting steering speed of the steering shaft. For determining a failure, a calculated value of variation with time of the detected steering angle is compared with the value of the detected steering speed. When the difference between the two values or the ratio of one value to the other value is outside of a predetermined range, it is determined that there is a failure in at least one of the sensors.

REFERENCES:
patent: 4700563 (1987-10-01), Iwata et al.

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