To provide a shift-by-wire system safely restorable to an ordinary control state, even if a vehicle power source is instantly disconnected, with a simple constitution.
When the vehicle power source is turned on, and when a power source-on discriminating means discriminates that the on-state is by ordinary turning-on operation by a driver, an SBW-ECU 13 learns a first reference position by a first position learning means. Meanwhile, when the vehicle power source is turned on, and when the power source-on discriminating means discriminates that the on-state is by a return after the vehicle power source is instantly disconnected, the SBW-ECU 13 "cuts off the transmission of driving torque" to a wheel by a torque control means, and makes acceptance of a switching request of a shift range impossible. Then, the SBW-ECU 13 learns the first reference position or a second reference position by the first position learning means or a second position learning means, and afterwards, switches the shift range to a predetermined range, releases "cutoff of the transmission of the driving torque", and makes the acceptance of the switching request of the shift range possible.
SHINOJIMA MASAAKI
YAMADA JUN
| JP2006336840A | 2006-12-14 | |||
| JP2008215436A | 2008-09-18 | |||
| JP2009270689A | 2009-11-19 | |||
| JP2004210033A | 2004-07-29 | |||
| JP2010090721A | 2010-04-22 |