VEHICULAR ELECTRIC POWER STEERING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a vehicular electric power steering device that prevents a steering feeling from deteriorating when a steering wheel is turned in the direction of a vehicle-body flow during suppression control of the vehicle-body flow. SOLUTION: The vehicular electric power steering device 1 controls a steering assist amount generated by an assist motor 9 at least in accordance with steering torque. A neutral zone being a steering torque zone that prevents a steering assist amount from being generated is provided for the control of the steering assist amount in accordance with the steering torque. When detecting a vehicle-body flow state, the neutral zone on the side of suppressing a vehicle-body flow is narrowed. COPYRIGHT: (C)2010,JPO&INPIT