| 摘要 |
PROBLEM TO BE SOLVED: To prevent a sense of incongruity with respect to a responsive feeling from steering torque of an electric power steering device combined with toe angle changing devices for rear wheels. SOLUTION: A steering control device for the electric power steering device 110 includes a base signal computing part 51 for computing a base signal D<SB>T</SB>in accordance with at least the steering torque; a damper compensation signal computing part 52 for computing a damper compensation signal in accordance with angular velocity of an electric motor 4 or turning speed; and an inertia compensation signal computing part 53 for compensating inertia and viscosity in a steering system. The electric motor 4 is driven by a target signal IM<SB>1</SB>obtained by compensating the base signal with a damper compensation signal and an inertia compensation signal, to provide a steering auxiliary force. The target signal of the auxiliary torque is compensated so that a difference between reference self-aligning torque of a front wheel in a front wheel steering vehicle and self-aligning torque of a front wheel in an all-wheel steering vehicle is applied to a driver as a responsive feeling from the steering torque. COPYRIGHT: (C)2008,JPO&INPIT |
