The object of lateral control is to swiftly and accurately follow steering direction. In this research, the lateral control used closed loop. On fig. 10, it is composed of closed loop system as flow chart for lateral control. When the unmanned vehicle just drives, the vehicle controller makes steering angle to be ‘0°’ by sensor. Then, the unmanned vehicle is steered according to command data. And when deciding steering angle, a controller controlled a motion, and it compares with potentiometer value. And it works loop until agreement with target value. Also full steer angle is limited ±30° for safety of vehicle and servo motor.
1236