VEHICLE STEERING APPARATUS

摘要

A vehicle steering apparatus includes a steering reaction force generating device including a steering reaction force motor, a turning device including a turning motor, a clutch device including an electromagnetic solenoid configured to mechanically engage and disengage the steering reaction force generating device and the turning device, a turning motor temperature sensor configured to detect a motor temperature value of the turning motor, a current integrated value acquiring unit configured to acquire a current integrated value of the turning motor, an abnormality diagnostic unit configured to diagnose whether the turning motor temperature sensor is normal, and a drive control unit configured to control the drive of the electromagnetic solenoid on the basis of the current integrated value of the turning motor acquired by the current integrated value acquiring unit if the abnormality diagnostic unit diagnoses the turning motor temperature sensor as being in an abnormal state.

主权项

1. A vehicle steering apparatus comprising:
a steering unit including a steering reaction force motor capable of applying a steering reaction force to a steering member operated for turning a turning wheel of a vehicle; a turning unit including a turning motor configured to apply a turning force for turning the turning wheel, the turning unit being capable of turning the turning wheel while being mechanically disengaged from the steering unit; a clutch device including a switching actuator configured to mechanically engage and disengage between the steering unit and the turning unit; a temperature sensor configured to detect a temperature value of a temperature of one of the steering reaction force motor and the turning motor; a current integrated value acquiring unit configured to acquire a current integrated value of a current of the one of the steering reaction force motor and the turning motor; an abnormality diagnostic unit configured to diagnose whether the temperature sensor is normal; and a control unit configured to control, when the clutch device is in a disengaged state, drive of the turning motor such that a turning angle is in accordance with an operating state of the steering member and drive of the steering reaction force motor such that a steering reaction force in accordance with a turning state of the turning unit is applied, wherein if the abnormality diagnostic unit diagnoses the temperature sensor as being normal, the control unit controls drive of the switching actuator by using the temperature value of the one of the steering reaction force motor and the turning motor detected by the temperature sensor, whereas if the abnormality diagnostic unit diagnoses the temperature sensor as being in an abnormal state, the control unit controls drive of the switching actuator by using the current integrated value of the one of the steering reaction force motor and the turning motor acquired by the current integrated value acquiring unit.