To provide an electric steering system that enables carrying out stable corrective steering expected for a driver.
An electric power steering system provided with a motor 11 that is controlled by a control system 200A based on a steering torque T to generate a steering assist force has operation switches 2aL and 2aR that are provided to a steering wheel to output an electric signal by driver's operation and an additional current calculation unit 300A that calculates and outputs an additional current value waveform for adding a current to drive the motor 11 according to an electric signal from the operation switches 2aL and 2aR. The additional current calculation unit 300A forms and outputs a current waveform having a predetermined additional current value IAd depending on vehicle running state information each time one operation irrespective of the time length for which the operation switches 2aL and 2aR are in an ON-state by the driver.
TADA YOSHINOBU
MATSUMOTO YOSHIYUKI
TOKUNAGA HIROYUKI
JP2001239950A | 2001-09-04 | |||
JPS56135344A | 1981-10-22 | |||
JPH08133114A | 1996-05-28 | |||
JP2003118615A | 2003-04-23 | |||
JP2003237616A | 2003-08-27 | |||
JP2000281002A | 2000-10-10 |
WO2010089945A1 | 2010-08-12 |
Etsuo Tada