| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrically-operated power steering device for suppressing the deflection of a steering wheel in the moving direction caused by the inclination of a road surface while suppressing the deterioration of the operating feeling the steering wheel. SOLUTION: A controller 28 of the electrically-operated power steering device 20 uses a total value for a basic assist force Ia and an additional assist force If as an assist force It to control a motor 26. The basic assist force Ia is obtained by performing basic assist operation according to steering torque. The additional assist force If is obtained by performing additional assist operation according to a difference between a steering angle target valueθt for front wheels 11, 12 as steering wheels to be located and an actual steering angleθs. The controller operates so that the front wheels 11, 12 are located nearly at the steering angle target valueθt. The steering angle target valueθt is determined according to the steering angle target valueθt and the actual steering angleθs. COPYRIGHT: (C)2009,JPO&INPIT |
