Electric power steering device
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United States of America Patent
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Oct 23, 2018
Grant Date -
Dec 1, 2016
app pub date -
Feb 4, 2015
filing date -
Feb 4, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An electric power steering device includes a basic return command value calculation unit configured to calculate a basic return command value in a direction to return a steering wheel to a neutral position on the basis of a steering angle of a steering wheel, a turn/return determination unit configured to determine the turn and the return of the steering wheel, a gradually changing return command value calculation unit configured to calculate a gradually changing return command value, the gradually changing return command value gradually increasing, while the return of the steering wheel is determined by the turn/return determination unit, and a return command value calculation unit configured to calculate a return command value by adding the gradually changing return command value to the basic return command value. The electric motor is driven by adding the return command value to the assist command value.
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Family
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