Electric power steering unit

Details Electric power steering unit Electric power steering unit

2007-04-10

2007-04-10

Chin, Gary (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle subsystem or accessory control

C180S443000, C180S446000

Reexamination Certificate

active

10971144

ABSTRACT:
An electric power steering unit includes: a steering mechanism for steering a wheel under the torque of a steering wheel; a motor for adding a steering assist power to the steering mechanism; a controller for controlling current to be conducted through the motor in accordance with a steering state; a storage element for storing a state of the controller; and initial value setting device for causing the storage device to store a state of the controller when IG (ignition switch) is changed to OFF, and for obtaining a process of overheat state of the controller or the motor to set an initial value of a current limit value to the motor when the IG is changed to ON. As a result, not only a load on a battery when IG is OFF is reduced but also the motor is efficiently driven at the start time.

REFERENCES:
patent: 4986379 (1991-01-01), Morishita
patent: 6326753 (2001-12-01), Someya et al.
patent: 6520279 (2003-02-01), Fukumoto et al.
patent: 6860361 (2005-03-01), Takatsuka et al.
patent: 6902028 (2005-06-01), Takatsuka et al.
patent: 7084593 (2006-08-01), Crowley
patent: 7091686 (2006-08-01), Kagei
patent: 2003/0106737 (2003-06-01), Itakura
patent: 2005/0205344 (2005-09-01), Uryu
patent: 0 903 279 (1999-03-01), None
patent: 62-11330 (1987-01-01), None
patent: 05-034168 (1993-02-01), None
patent: 6-247324 (1994-09-01), None
patent: 07-137651 (1995-05-01), None
patent: 08-108856 (1996-04-01), None
patent: 09-315330 (1997-12-01), None
patent: 2000-339600 (2000-12-01), None
patent: 2001-138928 (2001-05-01), None
patent: 2001-138929 (2001-05-01), None
patent: 2001-328551 (2001-11-01), None
patent: 2001-328551 (2001-11-01), None
patent: P2003-220963 (2003-08-01), None

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