| 摘要 |
PURPOSE: An electronic power steering system for a vehicle provides the smaller steering force of a steer wheel, even the speed of a vehicle increases on travelling a downhill road in a mountain. CONSTITUTION: An electronic power steering system includes an emission control module(10), a steering angle sensor(20), a transverse acceleration sensor(30) and an ECU(engine control unit)(40). The emission control module(10) outputs the signal sensing the increase and decrease of vehicle velocity. The steering angle sensor(20) outputs the signal sensing the large right and left steering angle. The transverse acceleration sensor(30) outputs the vehicle inclination sensing signal over the reference value. The ECU(engine control unit)(40) computes the respective output signals. According to the computing result, the solenoid of the electron power steering operates. Therefore, the electronic power steering system controls the oil pressure related to the wheel steering, thereby providing a light steering force.
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