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公开(公告)号:US06640171B2
公开(公告)日:2003-10-28
申请号:US09921634
申请日:2001-08-03
IPC分类号: G06F1700
CPC分类号: B60K28/16 , B60T8/1764 , B60T2260/022 , B60T2260/024 , B60W2520/14 , B60W2520/28 , B62D7/159
摘要: A rear steer control for a motor vehicle considers vehicle velocity in three ranges and provides an out of phase rear steer angle in open loop control within a low velocity range for oversteer assistance of parking and similar vehicle maneuvers, an in phase rear steer angle in closed loop control responsive to vehicle yaw rate within a high velocity range for understeer vehicle stability assistance, and a steer angle in closed loop control responsive to vehicle yaw rate within an intermediate velocity range. In a preferred embodiment, the closed loop control in the high velocity range may be combined with an open loop control. The control further provides supplemental throttle adjustments in coordination with the rear steer control for increased traction and stability in a turn.