| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric power steering device capable of ensuring superior steering response characteristic not depending on inertia main shaft arrangement of an actual vehicle. SOLUTION: The electric power steering device 1 is provided with a torque sensor 10 for detecting steering torque generated by steering operation; a vehicle speed sensor 11 for detecting a vehicle speed; and an ECU 12. The ECU 12 has an assist amount operation part 13 for determining an assist amount based on a detection value of the torque sensor 10 and the vehicle speed sensor 11; an assist amount correction part 14 for correcting the assist amount using a transmission function obtained by vehicle item data including a parameter regarding the actual inertia main shaft arrangement and target inertia main shaft arrangement; and a motor driving control part 15 for controlling driving of a motor 8 according to the assist amount after correction. The vehicle item data including the parameter regarding the actual inertia main shaft arrangement and the target inertia main shaft arrangement are previously memorized in a memory 16. COPYRIGHT: (C)2008,JPO&INPIT |
