| 摘要 |
PROBLEM TO BE SOLVED: To suppress vibration level when vibration occurs with a steering wheel when hysteresis characteristic is given to a steering reaction force characteristic when feeding or getting back a turn of steering wheel. SOLUTION: When a steering reaction force command value Tp* is on a second characteristic line (for example, B and D), the inclination of the steering reaction force command value Tp* is increased from K2 to K1 when the direction of feeding and returning of the steering wheel is changed. When the steering reaction force command value Tp* is on a first characteristic line (for example, A2), the inclination of the steering reaction force command value Tp* is decreased from K1 to K2 when a steering angleθh reaches the angle corresponding to the intersection of the first characteristic line and the second characteristic line. When the vibration level of the steering angleθh is not less than a predetermined level, the inclination on the first characteristic line is set to K3 smaller than K1. COPYRIGHT: (C)2009,JPO&INPIT |
