Failsafe steering device for steer-by-wire system

Details Failsafe steering device for steer-by-wire system Failsafe steering device for steer-by-wire system

2006-10-24

2006-10-24

Zanelli, Michael J. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle subsystem or accessory control

C701S033000, C180S322000

Reexamination Certificate

active

07127341

ABSTRACT:
A failsafe steering device for a steer-by-wire system includes a main Electronic Control Unit (ECU) that detects manipulating states of a main steering wheel and a rack mechanism via a plurality of sensors, actuates a reaction motor that provides the reaction force to the main steering wheel in relation to a driver's steering force, and controls a steering motor that executes the steering by actuating the rack mechanism. The failsafe steering device further includes a battery providing power to the steering motor, a relay restraining the power supply between the battery and the steering motor, a failsafe ECU that determines the malfunction state of the main ECU and controls the relay accordingly, and a steering shaft that transmits the rotational force of a supplement steering wheel to the rack mechanism.

REFERENCES:
patent: 4911261 (1990-03-01), Conley
patent: 6535806 (2003-03-01), Millsap et al.
patent: 6580989 (2003-06-01), Husain et al.
patent: 7004279 (2006-02-01), Shitamitsu et al.
patent: 2004/0193344 (2004-09-01), Suzuki

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