Emergency control system and method for a steer-by-wire system

An emergency control system for a vehicle, the emergency system being configured to operate in response to a failure of a steer-by-wire (SBW) system of the vehicle,

• wherein the SBW system includes a steering force actuator connected to a steering wheel and a wheel drive and performs communication between the steering force actuator and the wheel drive to control wheel steering through the steering wheel,
• wherein the emergency control system comprises:
• at least one sensor configured to detect information relating to the vehicle and information on surroundings of the vehicle;
• an acceleration/deceleration device configured to control a vehicle speed;
• an emergency autonomous driving control device configured to execute a vehicle lane change assist control, a lane following assist control, and a forward collision-avoidance assist control;
• and
• a controller, and
• wherein the controller is configured to:
• execute the lane following assist control and the forward collision-avoidance assist control using the emergency autonomous driving control device, when a target failure of the steering force actuator is detected;
• determine a target speed of the vehicle based on the information detected by the at least one sensor and control the acceleration/deceleration device so that the vehicle drives at the target speed;
• determine whether a stopping condition is satisfied based on the information detected by the at least one sensor;
• and
• control the acceleration/deceleration device, when the stopping condition is satisfied.