| 摘要 |
To achieve a fail-safe fully utilizing the advantage of provision of plural motors. The second controller (72) performs a one-motor SBW mode when at least one of the first turning controller (71), the first turning motor (M1) and a torque sensor (34) malfunctions in a state where the first turning controller (71) and the second turning controller (72) perform a two-motor SBW mode. Furthermore, the first controller (71) performs a one-motor EPS mode when at least one of the second turning controller (72) and the second turning motor (M2) malfunctions in the state where the first turning controller (71) and the second turning controller (72) perform a two-motor SBW mode. |
