Electric power steering system

Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle subsystem or accessory control

Reexamination Certificate

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Details

C701S042000, C180S446000

Reexamination Certificate

active

10980326

ABSTRACT:
An electric power steering system for an automotive vehicle, including a steering torque detecting device which detects a steering torque of a steering shaft. An electric motor is provided to generate an assist torque for assisting a driver's steering effort required for steering the vehicle and a counter-assist torque for increasing the driver's steering effort. The assist torque and the counter-assist torque are applied to a steering mechanism. Additionally, a controller is provided to output a drive command to the electric motor in accordance with the detected steering torque. The drive command is for causing the electric motor to generate the counter-assist torque when the detected steering torque is a transitional torque.

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patent: 6148948 (2000-11-01), Shimizu et al.
patent: 6364051 (2002-04-01), Kada et al.
patent: 6711484 (2004-03-01), Kifuku et al.
patent: 6892120 (2005-05-01), Kanda
patent: 10-278814 (1998-10-01), None
patent: 11-034902 (1999-02-01), None
patent: 2001-122139 (2001-05-01), None
patent: 2002-331948 (2002-11-01), None
patent: 2003-118610 (2003-04-01), None

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