APPARATUS AND METHOD FOR CONTROLLING MOTOR DRIVEN POWER STEERING SYSTEM

Provided are an apparatus and a method for controlling a motor driven power steering system. The apparatus may include an MDPS basic logic unit configured to determine a first auxiliary command current in a manual driving mode of a vehicle, an autonomous driving steering control unit configured to determine a second auxiliary command current in an autonomous driving mode, a filter unit configured to filter the column torque so that noise torque is removed, and a control unit configured to control whether to activate the filter unit according to whether a predefined sudden steering condition is satisfied, to determine a driver's steering intervention based on selectively filtered column torque, to determine a final auxiliary command current by applying a weight to the first and second auxiliary command currents, and to control switching from the autonomous driving mode to the manual driving mode.