Patent ID: 8554417

Claim:
A narrow band feedback control system to mitigate a disturbance within a predetermined bandwidth that is received by an electric power steering (EPS) system within a vehicle, comprising a torque sensor that calculates a torque value associated with the disturbance applied to the EPS system, the torque sensor outputs a torque signal related to the torque value; a filter that receives the torque signal, filters the torque signal to the bandwidth associated with the external disturbance, and outputs a filtered torque signal; an amplifier that receives the filtered torque signal, adjusts the gain of the filtered torque signal, and outputs a filtered, amplified torque signal; and a logic module that receives the filtered, amplified torque signal, generates a counter torque signal that is an inverse of the filtered, amplified torque signal and outputs the counter torque signal to the EPS system to mitigate the torque received from the external source.