| 摘要 |
An electric power steering apparatus for performing steering assist. The apparatus is provided with an operation amount sensor (5) for sensing an operation amount (Th) of an operation member (1) for steering a motor vehicle; a reference assist characteristics setting section (22) for setting reference assist characteristics (L0); and a motor driving target value setting section (21) for setting a motor driving target value (Ta) in accordance with a corrected assist characteristics (L11, L12) obtained by shifting the reference assist characteristics (L0) along the axis of coordinates of the operation amount (Th). The apparatus is further provided with a shifting amount setting section (24) for setting, when forward stroke steering is done, the shifting amount ( DELTA Th) to zero, while setting, when return stroke steering is done, the shifting amount ( DELTA Th) to a value at which corrected assist characteristics (L11, L12) is obtained in which the absolute value of the motor driving target value (Ta) corresponding to the operation amount (Th) is increased. <IMAGE> |
