METHOD FOR CONTROLLING MDPS THROUGH COOPERATIVE CONTROL BETWEEN LKAS AND FLEXSTEER

The present invention relates to a method for controlling motor driven power steering (MDPS) through a cooperative control between a lane keeping assistance system (LKAS) and a FlexSteer, comprising the steps of: judging, by a control part, whether or not an LKAS control command is input via the button input of an input part; controlling, by the control part, an MDPS torque based on a tuning map corresponding to an LKAS mode if the LKAS control command is input; and interrupting conversion into a FlexSteer mode and keeping the LKAS mode if a FlexSteer control command is input during LKAS mode execution. The present invention can prevent the performance deterioration of the LKAS by preventing collision between a control for preventing the lane departure of a vehicle by the LKAS and an MDPS steering force control by a FlexSteer control. [Reference numerals] (AA) Start; (BB,DD,FF) No; (CC,EE,GG) Yes; (HH) End; (S10) LKAS control command ?; (S20) Turn on a display part (Turn on an LKAS mode display region); (S30) MDPS torque control; (S40) FlexSteer control command ?; (S50) Turn on the display part (Turn on the LKAS mode display region); (S60) MDPS torque control; (S70) End the LKAS mode ?; (S80) Control an MDPS torque based on an existing tuning map