Patent ID: 7349780
Filing Date: 2008-03-25
Classification: B62D,G01P

Abstract:
1. A steering angular velocity computing device comprising: a steering angle detector for detecting a change in steering angle; a timer for measuring a required time from a time when the steering angle changes to a time when the steering angle next changes; and a steering angular velocity computing unit for computing a steering angular velocity by dividing an amount of change of the steering angle by the required time corresponding to the amount of change after the detector has detected a change in the steering angle, and outputting the steering angular velocity, wherein the steering angular velocity computing unit outputs the steering angular velocity for a first extended output period longer than the required time when the steering angular velocity is being reduced, wherein the steering angular velocity computing unit computes and outputs a reduced steering angular velocity obtained by multiplying the steering angular velocity by a velocity coefficient in each interval of a constant extended period, when a next change in the steering angle is not detected during the first extended output period.