Apparatus and method for correcting offset of yaw rate sensor and system for controlling speed of vehicle with the said apparatus

The present invention suggests an offset correcting apparatus of a yaw rate sensor which corrects an offset of a yaw sensor in accordance with a status of a vehicle in a cruise control system, a method thereof, and a vehicle speed control system including the apparatus. The suggested offset correcting apparatus of a yaw rate sensor includes a current status determining unit which determines a status of its own vehicle as one of a driving vehicle and a stopped vehicle; a first offset correcting unit which if its own vehicle is determined as the driving vehicle, corrects the offset of the yaw rate sensor which is installed in its own vehicle when its own vehicle is being driven in a straight line; and a second offset correcting unit which if its own vehicle is determined as the stopped vehicle, corrects the offset of the yaw rate sensor when the position of its own vehicle is not changed.