Vehicle steering device
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United States of America Patent
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Jan 3, 2017
Grant Date -
Dec 17, 2015
app pub date -
Dec 26, 2013
filing date -
Dec 28, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
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.
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Family
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