Steer-by-wire-system

Details Steer-by-wire-system Steer-by-wire-system

2005-10-31

2008-08-26

Camby, Richard M. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle subsystem or accessory control

C701S042000, C180S402000, C180S446000

Reexamination Certificate

active

07418326

ABSTRACT:
In a steer-by-wire system10, a first steering reaction force made-up value (Hc1) is determined in dependence on a road reaction force (W), and a second steering reaction force made-up value (Hc2) is determined in dependence on a steering position (X) of a steering handle11or steerable wheels50. A steering reaction force command value (H) is generated from both of the first steering reaction force made-up value (Hc1) and the second steering reaction force made-up value (Hc2) the weightings on which are adjusted by respective weighting gains (G1, G2), and the ratio of the weighting gains is properly altered in dependence on the state of a road surface. Thus, it can be realized to provide the steer-by-wire system10capable of adjusting the steering reaction force to be sensitive or insensitive to the state of the road surface.

REFERENCES:
patent: 7275617 (2007-10-01), Endo et al.
patent: 7322439 (2008-01-01), Hara et al.
patent: 2003/0055545 (2003-03-01), Uenuma et al.
patent: 2003/0220727 (2003-11-01), Husain et al.
patent: 2002-145099 (2002-05-01), None
patent: 2003-81111 (2003-03-01), None
patent: 2004-34923 (2004-02-01), None

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