VEHICLE STEERING DEVICE

摘要

The steering device includes first and second motors for steering which have common electric characteristics; first and second current sensors detecting first and second current values in the first and second motor, respectively; and abnormality diagnosis units. The abnormality diagnosis units make an abnormality diagnosis indicating that the steering device is abnormal when difference between the first and second current values exceeds a predetermined threshold value. When some abnormality occurs in the current detecting units for detecting the magnitudes of a current flowing through the steering motor, an abnormality diagnosis is rapidly made by comparing the difference with the predetermined value.

主权项

1. A vehicle steering device comprising:
a steering device configured to turn a steered wheel in accordance with operation of a steering member, the steering device including first and second motors for steering which are connected to each other through a steering force transmitting mechanism and have electric characteristics which are set commonly each other; a first current detecting unit configured to directly detect a first current value of a current flowing through the first motor; a second current detecting unit configured to directly detect a second current value of a current flowing through the second motor; and an abnormality diagnosis unit configured to make a diagnosis indicating that the steering device is abnormal when a difference between the first and second current values detected by the first and second current detecting units exceeds a predetermined threshold value.