| 摘要 |
PROBLEM TO BE SOLVED: To provide a steering device for a vehicle facilitating the driving of the vehicle by suitably controlling the turned state of a turned wheel relative to the operation of a steering wheel by a driver. SOLUTION: An operation state determination part 42 determines the turning operation state of the steering wheel 11 by the driver. A reference point setting part 43 sets a steering-holding operation point, a cutting-in operation point and a returning operation point as reference points based on the determined operation state of the steering wheel 11. A turning angle variation characteristic determination part 44 determines a cutting-in operation variation characteristic of a non-linear shape that the variation characteristic of the turning angleδvaried to the reference point and the maximum operation point is downward projected or a returning operation variation characteristic of a non-linear shape that the variation characteristic of the turning angleδvaried to the reference point and a neutral operation point is upwardly projected using the determined operation state of the steering wheel 11 and the set reference point. Thereby, it can be controlled such that the turned state the left and right front wheels FW1, FW2 can be controlled so as to always become equal in turned states according to turning operation of the steering wheel 11. COPYRIGHT: (C)2008,JPO&INPIT |
