Patent ID: 9592848
Date: 2017-03-14
CPC Classifications: B62D

Claim:
1. An electric power steering controller disposed in an electric power steering system having a motor generating an assist torque that assists a steering operation of a steering member that is operated by a driver of a subject vehicle; a torque detector detecting a steer torque that is applied to the steering member; and a steer angle detector detecting a steer angle of a rotation member that rotates according to the steering operation of the steering member, the controller comprising: an Electronic Power Steering Electronic Control Unit (EPSECU), the EPSECU configured to include: the target steer torque generator includes a weighting ratio determiner determining a weighting ratio according to a steering system state indicator value that is determined based on at least one of the steer amount of the steering member by the driver and the estimated load, and the target steer torque generator generates the target steer torque by performing a weighted addition of the load based target steer torque and the steer angle based target steer torque.