Electric power steering apparatus.

摘要

An electric power steering apparatus having first and second control means for performing a control relating to a steering assistance. The second control means includes means for determining the occurrence of abnormality in said first control means (21) if control information on said driving current value indicates a value that does not drop below a predetermined value when the detected steering torque is inside the dead zone, means for determining the occurrence of abnormality in said first control means (21) if control information on the motor driving direction indicates a steering assisting direction opposite to the direction of the detected steering torque when the detected steering torque is outside the dead zone, and means for determining the occurrence of abnormality in said first control means (21) if the driving current value is greater than a predetermined value. <IMAGE>