Patent ID: 9487230
Filing Date: 2016-11-08
CPC Classification: B62D

Claim Text:
1. A power steering device comprising: a steering mechanism formed by an input shaft that rotates according to a steering operation of a steering wheel, an output shaft that is connected to the input shaft through a torsion bar and a conversion mechanism that converts a rotation of the output shaft to a steered movement of a steered road wheel; a first rotation angle sensor detecting a rotation angle of the input shaft or an input shaft rotation angle that is a relative rotation angle of the input shaft to the output shaft and outputting the rotation angle or the input shaft rotation angle as an input shaft rotation angle signal; a second rotation angle sensor detecting a rotation angle of the output shaft and outputting the rotation angle as an output shaft rotation angle signal; an electric motor providing a steering assist force to the steering mechanism; and an electronic control unit controlling drive of the electric motor according to a vehicle operating condition, and the electronic control unit having;