CONTROL METHOD OF AN ELECTRIC POWER STEERING DEVICE REFLECTING THE KINETIC PROPERTY OF A VEHICLE CAPABLE OF RETURNING A STEERING WHEEL TO AN INITIAL POSITION BY A RESTORING CONTROL

摘要

PURPOSE: A control method of an electric power steering device reflecting the kinetic property of a vehicle is provided to improve driving stability and neutral manipulation by controlling a steering handle to be restored to an initial position.;CONSTITUTION: A control method of an electric power steering device reflecting the kinetic property of a vehicle is as follows: Vehicle speed and steering torque are measured. Lateral acceleration, slip angle, and alignment torque is calculated based on the measured valves. The calculated lateral acceleration is determined to be within a predetermined range or not. In case of the acceleration is out of the predetermined range, an auxiliary steering force is applied. When the auxiliary steering force is applied, a steering device is controlled by a restoring force.;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Estimating lateral acceleration/slip angle/align torque; (BB) Confirming vehicle speed; (CC) Determining an On-Center section according to a lateral acceleration stabilized area; (DD) Controlling a foundation; (EE) Controller algorithm; (FF) Selecting a slip angle linear section according on a lateral acceleration stabilized area; (GG) Calculating a proportional torque control value for slip angle/align torque; (HH) Controlling restoration; (II) Waiting execution; (JJ) Confirming the condition of a vehicle; (KK) Completing execution