Abstract: The present invention relates a method and a control apparatus for providing torque reliability. In particular, the present invention relates to a method and a control apparatus for providing torque reliability in which it is determined whether a signal output from a torque output element includes an error, and when it is determined that there is an error, a torque can be accurately calculated using steering angle information and motor position information instead of information output from the torque output element.

Abstract: The present invention provides a system and method of providing high reliability for an absolute angle in an electric power steering system in which the final absolute steering angle is calculated using a device configured to measure an absolute steering angle and a relative steering angle.

Abstract: An electric power steering system includes: a torque sensor including a first rotor connected to an input shaft, a second rotor connected to an output shaft, a first angle element for measuring an absolute steering angle of the first rotor, and second and third angle elements for measuring relative steering angles of the first rotor; and an electronic control unit for determining a reference steering angle based on the absolute steering angle and the relative steering angles received from the torque sensor, tracing and accumulating first and second absolute steering angles rotated from the reference steering angle based on the relative steering angles received from the second and third angle elements, and averaging the first and second absolute steering angles to provide the calculated final absolute steering angle when the difference between the accumulated first and second steering angles is within the preset reference difference.

Abstract: The present invention relates a method and a control apparatus for providing torque reliability. In particular, the present invention relates to a method and a control apparatus for providing torque reliability in which it is determined whether a signal output from a torque output element includes an error, and when it is determined that there is an error, a torque can be accurately calculated using steering angle information and motor position information instead of information output from the torque output element.

Abstract: The present invention provides a system and method of providing high reliability for an absolute angle in an electric power steering system in which the final absolute steering angle is calculated using a device configured to measure an absolute steering angle and a relative steering angle.