Patent ID: 6952634

Claim:
A rear-wheel steering angle control device, comprising: a detecting means for detecting at least a vehicle speed, an actual front-wheel steering angle, and an actual rear-wheel steering angle; a target rear-wheel steering angle calculating means for calculating a target rear-wheel steering angle based upon the detection by the detecting means; a rear-wheel steering angle control means for controlling the actual rear-wheel steering angle detected by the detecting means to be approximately equal to the target rear-wheel steering angle calculated by the target rear-wheel steering angle calculating means, and the target rear-wheel steering angle calculating means including: a front end point locus memorizing means for setting one end of a line located at a vehicle front side as a front end point and setting the other end of the line located at a vehicle rear side as a rear end point and for memorizing a front end point running locus as a sample point at every predetermined sample distance, the line being arranged to be parallel to a vehicle longitudinal direction; an averaged locus calculating means for calculating an averaged locus by averaging the front end point running locus based upon the sample point memorized by the front end point locus memorizing means; and a target rear-wheel steering angle limiting means for limiting the target rear-wheel steering angle not to deviate the rear end point from an inner range of the averaged locus.