Patent ID: 7395142
Filing Date: 2008-07-01
Classification: B60G,B60K,B60W

Abstract:
1. A counter steer detecting method comprising the steps of: detecting a steering angle by a steering angle sensor; detecting a lateral acceleration by a lateral acceleration sensor; and determining counter steer according to the steering angle detected by said steering angle sensor and the lateral acceleration detected by said lateral acceleration sensor on the basis of a counter steer determination area table indicating whether or not the counter steer is on in relation to the combination of steering angle and lateral acceleration; said counter steer determination area table indicating at least one of a first area where the direction of turn indicated by the steering angle is opposite to the direction of turn indicated by the lateral acceleration and a second area where the direction of turn indicated by the steering angle is the same as the direction of turn indicated by the lateral acceleration; said first area being defined outside the counter steer determination area near a point where the steering angle is 0 and the lateral acceleration is 0; said second area being defined inside the counter steer determination area where the lateral acceleration is larger than a boundary value increasing in absolute value from a first predetermined value greater than 0 at a steering angle of 0 with an increase in absolute value of the steering angle; and further comprising the step of detecting a vehicle speed by a vehicle speed sensor; said counter steer determination area table being either one of a plurality of tables prepared on the basis of a plurality of vehicle speeds and selectively used according to the vehicle speed detected by said vehicle speed sensor or a predetermined table using a corrected steering angle obtained by correcting the steering angle detected by said steering angle sensor with a correction coefficient according to the vehicle speed detected by said vehicle speed sensor; further comprising the step of sending a signal indicating whether or not counter steer is on to a target distributed torclue setting device for adjusting torque distribution based on whether or not counter steer is on.