| 摘要 |
<p>A motor vehicle steering system is provided which includes: an operation member (30) for steering a motor vehicle; a steering mechanism (10) for turning steerable wheels of the motor vehicle; a first actuator (51M; 51) and a second actuator (51S; 40) each operative to apply a driving force to the steering mechanism (10); and a clutch mechanism (20) operative to mechanically engage and disengage the operation member to or from the steering mechanism (10). When the first and second actuators (51M, 51S; 51S, 40) operate normally, the clutch mechanism (20) is brought into the disengaged state, and a driving force is applied to the steering mechanism (10) from the first and second actuators (51M, 51S; 51S, 40) and, when one of the first and second actuators (51M, 51S; 51S, 40) malfunctions, the clutch mechanism (20) is brought into the engaged state, and the steering assist force is generated by the other normal actuator in accordance with the operation of the operation member (30). <IMAGE></p> |
