A method and an electronic device for controlling a robotic system. The method comprises obtaining scanned data about a first junction and a second junction for welding a body frame and a roof of a bus (410), the first and second junctions arranged on opposite sides of the bus; determining a plurality of welding points associated with the first and second junctions based on the obtained scanned data (420); and controlling, based on the plurality of welding points, the robotic system to weld the body frame and the roof along the first and second junctions (430). With the method of the present disclosure, the roof and the body frame of the bus can be welded automatically. In comparison to the processes of welding by the an operator, errors caused by human factors are eliminated, which can significantly improve welding quality and welding consistency. Furthermore, the method can be used to assembly assemble various types of buses on a production line automatically, which can significantly improve the production efficiency of the production line.