Patent ID: 8249781

Claim:
A vehicle seat control system comprising: a vehicle seat having a restraint portion that is provided so as to be movable relative to a seat body portion and of which a degree of restraint on a seated occupant is variable; a driving device for moving the restraint portion relative to the seat body portion in an occupant restraining direction; a curvature radius detection system for detecting a curvature radius of a curve ahead on a road on which the vehicle is running; a speed sensing part for sensing a speed of the vehicle; a pre-turning action detection section for detecting a pre-turning action taken before the vehicle turns the curve; an estimation section for estimating lateral acceleration that is expected to occur to the vehicle while the vehicle is turning the curve ahead of the vehicle, based on the curvature radius of the curve ahead of the vehicle that is detected by the curvature radius detection system, and on the speed of the vehicle before the vehicle turns the curve ahead of the vehicle that is sensed by the speed sensing part, the estimation section being configured to determine whether the estimated lateral acceleration is greater than a predetermined reference lateral-acceleration value; a drive control section for controlling the driving device so as to move the restraint portion relative to the seat body portion in the occupant restraining direction when the estimated lateral acceleration is greater than the predetermined reference lateral-acceleration value, and the pre-turning action is detected by the pre-turning action detection section; and a deceleration detection section for detecting deceleration of the vehicle in a vehicle longitudinal direction, wherein the drive control section controls the driving device so that the restraint portion is moved relative to the seat body portion in the occupant restraining direction when the lateral acceleration of the vehicle estimated by the estimation section is greater than the predetermined reference lateral-acceleration value, the pre-turning action is detected by the pre-turning action detection section, and the deceleration of the vehicle in the vehicle longitudinal direction detected by the deceleration detection section is greater than a predetermined reference deceleration value.