Patent ID: 9150249
Filing Date: 2015-10-06
Classification: B62D

Abstract:
1. A steering assist device comprising: an electric motor that supplies applies a steering drive force to a steering mechanism of a vehicle; an information acquisition unit that acquires a lateral deviation of the vehicle from a target travel line and a lateral deviation variation rate which is a variation rate of the lateral deviation per unit time; a basic target current value setting unit that sets a basic target current value for the electric motor; a current compensation value computation unit that computes a current compensation value for compensating the basic target current value on the basis of the lateral deviation and the lateral deviation variation rate acquired by the information acquisition unit such that the lateral deviation and the lateral deviation variation rate get close to zero; a target current value computation unit that computes a target current value by compensating the basic target current value set by the basic target current value setting unit with the current compensation value computed by the current compensation value computation unit; and a control unit that controls drive of the electric motor on the basis of the target current value computed by the target current value computation unit.