| 摘要 |
PROBLEM TO BE SOLVED: To prevent an autopilot from being stopped by an unintended steering wheel operation. SOLUTION: A steering shaft 1 and an output shaft 3 are collinearly connected via gears 6 and 8 and a planetary gear 7. A lane detecting device 11 detects a lane whereon a vehicle is traveling, and this lane information is outputted to an automatic steering controller 10 along with a vehicular state signal from a control system of the vehicle. In the automatic steering controller, when it is determined from the lane information that the vehicle has drifted from the lane, a steering control motor 19 is controlled so as to correct this drift. Meanwhile, when a steering wheel is operated and the output shaft is rotated in an opposite direction, the automatic steering is stopped. For a steering torque during the automatic steering, when an electrical apparatus is operated, a first steering torque is used, and when it is not, a second steering torque is used. The second steering torque is set larger than the first steering torque for preventing automatic steering mode from being canceled by an unintended steering wheel operation when operating the electrical apparatus. |
