STEERING DEVICE, STEERING REACTION FORCE SIMULATION DEVICE AND STEERING REACTION FORCE SETTING METHOD

摘要

PROBLEM TO BE SOLVED: To prevent generation of unnatural feeling in steering feeling of an operator for operating a steering wheel when hysteresis is included in a steering reaction force characteristic in turning increase and turning back of the steering wheel. SOLUTION: When a rotating direction of the steering wheel is changed with a steering reaction force command value Tp* on a second characteristic line (e.g. B and D), the steering reaction force command value Tp* is changed by inclination K1 which is larger than inclination K2 of the second characteristic line. When a steering angleθh attains an angle corresponding to an intersection with the second characteristic line when the steering reaction force command value Tp* is on a first characteristic line (e.g. A' and C), the steering reaction force command value Tp* is changed by the inclination K2. When the steering reaction force command value Tp* is on the first characteristic line, a value of the inclination K1 is gradually made smaller as the steering wheel rotates without changing the rotating direction. COPYRIGHT: (C)2009,JPO&INPIT