| CPC B62D 5/046 (2013.01) [B62D 5/049 (2013.01)] | 20 Claims |
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1. A steering control apparatus comprising:
a torque detection sensor unit including a first torque sensor and a second torque sensor which detect relative rotational displacements of a steering input shaft and a steering output shaft according to twist of a torsion bar disposed between the steering input shaft and the steering output shaft;
a controller including a first control module which is connected to the first torque sensor and a second control module which is connected to the second torque sensor; and
a dual winding steering motor unit including a first winding motor which is connected to the first control module and a second winding motor which is connected to the second control module,
wherein at least one of the first control module and the second control module detects a failed state by checking a detection signal of each of the first torque sensor and the second torque sensor, calculates a torque estimation value using information of a vehicle speed sensor, a steering angle sensor, a yaw rate sensor and a lateral acceleration sensor depending on states of the torque detection sensor unit and an external communication channel, and controls the dual winding steering motor unit by generating a control signal based on the torque estimation value.
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