Electric power steering apparatus

Details Electric power steering apparatus Electric power steering apparatus

1998-07-31

2000-11-21

Dickson, Paul N.

Motor vehicles

Steering gear

With electric power assist

180443, 180404, 701 41, B62D 504

Patent

active

061489492

ABSTRACT:
Electric power steering apparatus includes a control unit for setting a motor control signal to control operation of an electric power assisting motor on the basis of at least steering torque detected by a steering torque sensor and a vehicle velocity detected by a vehicle velocity sensor. The control unit includes a steering torque estimating section for estimating the steering torque on the basis of the vehicle velocity detected by the vehicle velocity sensor and a steering angle detected by a steering angle sensor. When the steering torque sensor is out of order or malfunctioned, the control unit controls the operation of the electric motor on the basis of the steering torque estimated by the steering torque estimating section.

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