| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric power steering control system capable of improving steering feeling of steering wheel regardless of a steering and travelling state. SOLUTION: A first electric current command value I<SB>1</SB>is computed based on steering torque T of steering wheel and vehicle velocity V of a vehicle, a differential command value T<SB>1</SB>is computed by differentiating the steering torque T, a differential gain G<SB>1</SB>is computed based on the steering torque T and the vehicle velocity V, a second electric current command value I<SB>2</SB>is computed by multiplying the differential command value T<SB>1</SB>and the differential gain G<SB>1</SB>and adding the first electric current command value I<SB>1</SB>, a convergent command value D<SB>2</SB>is computed based on the vehicle velocity V and rotating speed R of an electric motor, a third electric current command value I<SB>3</SB>is computed by deducting a convergent command value D<SB>2</SB>from the second electric current command value I<SB>2</SB>, and the electric motor is driven based on the third electric current command value I<SB>3</SB>by the motor driving part by outputting the third electric current command value I<SB>3</SB>to the motor driving part. COPYRIGHT: (C)2009,JPO&INPIT |
