Patent ID: 7055645
Filing Date: 2006-06-06
Classification: B62D

Abstract:
1. A motion control method of a vehicle provided with a transfer ratio variable mechanism for changing a transfer ratio by driving a gear ratio variable motor, and an assist motor assisting a steering force on the basis of a steering torque generated in an output shaft of the transfer ratio variable mechanism, in the middle of a steering transfer system connecting a steering wheel and steered wheels, comprising: a first step of detecting a rotation angle θpm of said assist motor; a second step of detecting a rotation angle θvm of said gear ratio variable motor; and a third step of determining a steering angle of said steering wheel on the basis of the rotation angle θpm detected in accordance with said first step and the rotation angle θvm detected in accordance with said second step, wherein said transfer ratio variable mechanism is controlled on the basis of the steering angle of said steering wheel determined in accordance with said third step.