Method and apparatus for checking torque sensor in electric powe

Details Method and apparatus for checking torque sensor in electric powe Method and apparatus for checking torque sensor in electric powe

1991-02-11

1992-01-21

Kashnikow, Andres

Motor vehicles

Compensating devices

180142, B62D 504

Patent

active

050820761

ABSTRACT:
A method for detecting abnormal condition of a torque sensor in an electric power steering system in which a power of an electric motor assisting steering operation of a vehicle is supplied in response to a torque signal generated from the torque sensor, the method comprising the steps of detecting a condition where the torque signal generated from the torque sensor is substantially equal to zero, detecting another condition wherein the rate of changing steering angle is larger than a predetermiend value, while the steering angle is held in an increasing state, and further detecting that the above detected conditions last more than a predetermined period.

REFERENCES:
patent: 4834201 (1989-05-01), Miyazaki et al.
patent: 4972320 (1990-11-01), Sagiura et al.

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